With Post-treatment Of Coating Or Coating Material Patents (Class 427/130)
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Patent number: 11910721Abstract: The invention comprises a method of forming a novel magnetic pinning structure having a (100) textured or cube-textured reference layer through a non-epitaxial texturing approach so that an excellent coherent tunneling effect is achieved in a pMTJ element due to its texture structure of CoFe BCC (100)/MgO rocksalt (100)/CoFe BCC (100). Correspondingly, a high MR ratio and a high pinning strength on the reference layer can be achieved for perpendicular spin-transfer-torque magnetic-random-access memory (pSTT-MRAM) using perpendicular magnetoresistive elements as basic memory cells which potentially replace the conventional semiconductor memory used in electronic chips, especially mobile chips for power saving and non-volatility.Type: GrantFiled: July 12, 2021Date of Patent: February 20, 2024Inventors: Yimin Guo, Rongfu Xiao, Jun Chen
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Patent number: 11798588Abstract: Provided is a magnetic recording medium having a recording track width of 2 ?m or less, including: a recording layer containing a powder of particles containing ? iron oxide, in which a squareness ratio measured in a transport direction is 30% or less, a squareness ratio S1 measured in the transport direction and a squareness ratio S2 measured in a width direction satisfy a relationship S1?S2, a coercive force is 220 kA/m or greater and 310 kA/m or less, an activation volume is 8000 nm3 or less, and in a switching field distribution (SFD) curve, a peak ratio X/Y of a main peak height X and a height Y of a sub-peak near zero magnetic field is 3.0 or greater.Type: GrantFiled: April 24, 2018Date of Patent: October 24, 2023Assignee: Sony CorporationInventors: Masaru Terakawa, Yoichi Kanemaki, Minoru Yamaga
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Patent number: 11758820Abstract: A magnetic device for magnetic random access memory (MRAM), spin torque MRAM, or spin torque oscillator technology is disclosed wherein a magnetic tunnel junction (MTJ) with a sidewall is formed between a bottom electrode and a top electrode. A passivation layer that is a single layer or multilayer comprising one of B, C, or Ge, or an alloy thereof wherein the B, C, and Ge content, respectively, is at least 10 atomic % is formed on the MTJ sidewall to protect the MTJ from reactive species during subsequent processing including deposition of a dielectric layer that electrically isolates the MTJ from adjacent MTJs, and during annealing steps around 400° C. in CMOS fabrication. The single layer is about 3 to 10 Angstroms thick and may be an oxide or nitride of B, C, or Ge. The passivation layer is preferably amorphous to prevent diffusion of reactive oxygen or nitrogen species.Type: GrantFiled: June 1, 2021Date of Patent: September 12, 2023Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Jodi Mari Iwata, Guenole Jan, Ru-Ying Tong
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Patent number: 11672183Abstract: A magnetic memory device includes a reference magnetic structure, a free magnetic structure, and a tunnel barrier pattern therebetween. The reference magnetic structure includes a first pinned pattern, a second pinned pattern between the first pinned pattern and the tunnel barrier pattern, and an exchange coupling pattern between the first pinned pattern and the second pinned pattern. The second pinned pattern includes magnetic patterns and non-magnetic patterns, which are alternately stacked. The first pinned pattern is a ferromagnetic pattern consisted of a ferromagnetic element.Type: GrantFiled: February 27, 2020Date of Patent: June 6, 2023Assignee: Samsung Electronics Co., Ltd.Inventors: Sang Hwan Park, Jae Hoon Kim, Younghyun Kim
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Patent number: 11554267Abstract: The improvement of administration of a therapeutic agent to a targeted region of a patient's brain is herein described. A magnetic material, preferably soluble iron, is administered to the patient. A magnetic field, for example via transcranial magnetic stimulation (TMS), is applied to the targeted region of the patient's brain. The magnetic field is used to agitate magnetic material localized to the targeted region of the brain, temporarily forming openings in the blood-brain barrier (BBB), increasing local perfusion, or both at the targeted region. A therapeutic agent is administered to the patient and is delivered to the targeted region of the patient's brain through openings in the BBB, local perfusion, or both.Type: GrantFiled: October 2, 2019Date of Patent: January 17, 2023Assignee: SYNAPTEC NETWORK, INC.Inventor: Sheldon Jordan
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Patent number: 11554101Abstract: An “inverse” precipitation route to precipitate aqueous soluble species with copolymers as nanoparticles having a hydrophilic, polar core and a less polar shell is described.Type: GrantFiled: January 22, 2019Date of Patent: January 17, 2023Assignee: THE TRUSTEES OF PRINCETON UNIVERSITYInventors: Robert F. Pagels, Robert K. Prud'Homme
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Patent number: 11431026Abstract: A polymer hybrid solid electrolyte that possesses high room temperature ionic conductivity, very low interfacial resistance with the electrodes and electrochemical stability window up to 5.2 volts. The polymer-ceramic hybrid solid electrolyte includes: a PEO based copolymer electrolyte; a solvate ionic liquid (SIL); and a salt of a monovalent cation. The inclusion of an ionically conductive additive, such as a ceramic fine powder, can further improve ionic conductivity as well as mechanical properties.Type: GrantFiled: April 29, 2019Date of Patent: August 30, 2022Assignee: NEI CorporationInventors: Parameswara Rao Chinnam, Runqing Ou
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Patent number: 11417448Abstract: A method for manufacturing a device having a three-dimensional magnetic structure includes applying or introducing magnetic particles onto or into a carrier element. A plurality of at least partly interconnected cavities are formed between the magnetic particles, which contact one another at points of contact, by coating the arrangement of magnetic particles and the carrier. The cavities are penetrated at least partly by the layer generated when coating, resulting in the three-dimensional magnetic structure. A conductor loop arrangement is provided on the carrier or a further carrier. When a current flows through the conductor loop, an inductance of the conductor loop is changed by the three-dimensional magnetic structure, or a force acts on the three-dimensional magnetic structure or the conductor loop by a magnetic field caused by the current flow, or when the position of the three-dimensional magnetic structure is changed, a current flow is induced through the conductor loop.Type: GrantFiled: June 13, 2017Date of Patent: August 16, 2022Assignee: Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V.Inventors: Thomas Lisec, Hans-Joachim Quenzer, Tim Reimer
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Patent number: 11175356Abstract: A magnetic sensor device includes a magnetic sensor detecting a detection-target magnetic field, and a soft magnetic structure near the sensor. In an orthogonal coordinate system having two orthogonal axes for representing an applied field strength and a magnetization-corresponding value, coordinates representing the applied field strength and the magnetization-corresponding value move along a minor loop not in contact with a major loop as the strength of an external magnetic field including the detection-target magnetic field varies within a variable range, where the applied field strength is a strength of a magnetic field applied to the soft magnetic structure, the magnetization-corresponding value is a value corresponding to magnetization of the soft magnetic structure, and the major loop is, among loops traced by a path of the coordinates as the applied field strength is varied, a loop that is the largest in terms of area of the region enclosed by the loop.Type: GrantFiled: November 26, 2019Date of Patent: November 16, 2021Assignee: TDK CORPORATIONInventors: Kazuya Watanabe, Hirokazu Takahashi
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Patent number: 11158785Abstract: A magnetoresistance effect element includes: a first ferromagnetic layer; a second ferromagnetic layer; and a non-magnetic layer provided between the first ferromagnetic layer and the second ferromagnetic layer, wherein at least one of the first ferromagnetic layer and the second ferromagnetic layer includes a first layer and a second layer in order from the side closer to the non-magnetic layer, the first layer contains a crystallized Co-based Heusler alloy, at least a part of the second layer is crystallized, the second layer contains a ferromagnetic element, boron element and an additive element, and the additive element is any element selected from a group consisting of Ti, V, Cr, Cu, Zn, Zr, Mo, Ru, Pd, Ta, W, Ir, Pt, and Au.Type: GrantFiled: December 22, 2020Date of Patent: October 26, 2021Assignee: TDK CORPORATIONInventors: Shinto Ichikawa, Kazuumi Inubushi, Katsuyuki Nakada
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Patent number: 11110541Abstract: Two aluminum alloy plates are sandwiched between an anvil and a chip of a horn which is being vibrated by a vibration unit, to perform ultrasonic bonding. A deposit removing unit is provided above the horn. When the horn is vibrated by the vibration unit and raised by an elevator, the chip positioned on the top of the horn comes into contact with a removal section, with the chip being vibrated, to allow the removal section to remove a deposit adhering to the chip.Type: GrantFiled: June 23, 2017Date of Patent: September 7, 2021Assignee: KEYLEX CORPORATIONInventors: Toshimasa Yamane, Kazunari Uehara
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Patent number: 10832840Abstract: A powder for dust cores includes an aggregate of soft magnetic particles, each of which includes a soft magnetic metal particle, and a ferrite film that covers a surface of the soft magnetic metal particle and includes ferrite crystal grains having a spinel structure. A diffraction peak derived from the ferrite crystal grains exists in a powder X-ray diffraction pattern. By a method for producing a powder for dust cores, a raw material powder that includes an aggregate of soft magnetic metal particles is prepared. Furthermore, many ferrite fine particles are formed on a surface of each of the soft magnetic metal particles of the raw material powder. Additionally, the ferrite fine particles are coarsely crystallized through heat treatment to form a ferrite film, which includes ferrite crystal grains having a spinel structure, on the surface of the each of the soft magnetic metal particles.Type: GrantFiled: December 12, 2016Date of Patent: November 10, 2020Assignee: DENSO CORPORATIONInventors: Ken Matsubara, Jung Hwan Hwang, Seishi Utsuno
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Patent number: 10762940Abstract: Multi-period thin-film structures exhibiting giant magnetoresistance (GMR) are described. Techniques are also described by which narrow spacing and/or feature size may be achieved for such structures and other thin-film structures having an arbitrary number of periods.Type: GrantFiled: December 6, 2017Date of Patent: September 1, 2020Assignee: Integrated Magnetoelectronics CorporationInventor: Edward Wuori
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Patent number: 10741314Abstract: The present invention relates to an anisotropic complex sintered magnet including MnBi with magnetic characteristics enhanced and an atmospheric sintering method for preparing the same. The anisotropic complex sintered magnet including MnBi according to the present invention may implement excellent magnetic characteristics, and thus may replace rare earth bond magnets in the related art, and a continuous process is enabled because the magnet is prepared by an atmospheric sintering method, and a sintering method used in the permanent magnet process in the related art is used as it is, so that the anisotropic complex sintered magnet is economical.Type: GrantFiled: May 12, 2016Date of Patent: August 11, 2020Assignee: LG ELECTRONICS INC.Inventors: Jinbae Kim, Yangwoo Byun
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Patent number: 10516096Abstract: Spin transfer torque magnetic random access memory structures, integrated circuits, and methods for fabricating integrated circuits are provided. An exemplary spin transfer torque magnetic random access memory structure has a perpendicular magnetic orientation, and includes a bottom electrode and a base layer over the bottom electrode. The base layer includes a seed layer and a roughness suppression layer. The spin transfer torque magnetic random access memory structure further includes a hard layer over the base layer. Also, the spin transfer torque magnetic random access memory structure includes a magnetic tunnel junction (MTJ) element with a perpendicular orientation over the hard layer and a top electrode over the MTJ element.Type: GrantFiled: March 28, 2018Date of Patent: December 24, 2019Assignee: GLOBALFOUNDRIES SINGAPORE PTE. LTD.Inventors: Taiebeh Tahmasebi, Dimitri Houssameddine, Chenchen Wang, Michael Nicolas Albert Tran
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Patent number: 10192572Abstract: According to one embodiment, a magnetic recording head includes a magnetic pole, a stacked body, and a first non-magnetic layer. The stacked body includes a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the magnetic pole, and a non-magnetic intermediate layer provided between the first magnetic layer and the second magnetic layer. The first non-magnetic layer is provided between the second magnetic layer and the magnetic pole, and contacts the magnetic pole and the second magnetic layer. The first magnetic layer has a first thickness and a first saturation magnetic flux density. The second magnetic layer has a second thickness and a second saturation magnetic flux density. A second product of the second thickness and the second saturation magnetic flux density is larger than a first product of the first thickness and the first saturation magnetic flux density.Type: GrantFiled: December 14, 2017Date of Patent: January 29, 2019Assignee: Kabushiki Kaisha ToshibaInventors: Kenichiro Yamada, Shuichi Murakami, Naoyuki Narita, Katsuhiko Koui, Akihiko Takeo, Mariko Shimizu, Hitoshi Iwasaki
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Patent number: 9984715Abstract: A magnetic disk of is provided, the magnetic disk having at least a magnetic layer, a carbon protective layer, and a lubrication layer sequentially provided on a substrate. In an embodiment, the lubrication layer a film formed by a lubricant having a perfluoropolyether compound A having a perfluoropolyether main chain in the structure and also having a hydroxyl group at the end and a compound C obtained from a reaction between a compound B expressed by: [Chemical formula 1] CF3(—O—C2F4)m-(O—CF2)n-OCF3 [m and n in the formula are natural numbers.] and aluminum oxide.Type: GrantFiled: November 2, 2015Date of Patent: May 29, 2018Assignee: WD Media, LLCInventors: Koichi Shimokawa, Katsushi Hamakubo, Kae Itoh
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Patent number: 9935261Abstract: A magnetic device for magnetic random access memory (MRAM), spin torque MRAM, or spin torque oscillator technology is disclosed wherein a perpendicularly magnetized magnetic tunnel junction (p-MTJ) with a sidewall is formed between a bottom electrode and a top electrode. A first dielectric layer is 3 to 400 Angstroms thick, and formed on the p-MTJ sidewall with a physical vapor deposition RF sputtering process to establish a thermally stable interface with the p-MTJ up to temperatures around 400° C. during CMOS fabrication. The first dielectric layer may comprise one or more of B, Ge, and alloys thereof, and an oxide, nitride, carbide, oxynitride, or carbonitride. The second dielectric layer is up to 2000 Angstroms thick and may be one or more of SiOYNZ, AlOYNZ, TiOYNZ, SiCYNZ, or MgO where y+z>0.Type: GrantFiled: April 5, 2017Date of Patent: April 3, 2018Assignee: Headway Technologies, Inc.Inventors: Sahil Patel, Ru-Ying Tong, Dongna Shen, Yu-Jen Wang, Vignesh Sundar
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Patent number: 9721126Abstract: Disclosed are a magnetic bar code chip and a reading method thereof. The magnetic bar code chip comprises binary information bits formed by N rows and M columns of permanent magnet bars and/or null bits, and information identification bits that are peripheral to the binary information bits. The information identification bits are composed of permanent magnet bar identifiers and used for representing a position and a state of the magnetic bar code chip. The permanent magnet bars and the null bits represent 1 and 0 or 0 and 1 respectively.Type: GrantFiled: September 10, 2014Date of Patent: August 1, 2017Assignee: MultiDimension Technology Co., Ltd.Inventors: Weifeng Shen, Songsheng Xue, Zhimin Zhou
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Patent number: 9721606Abstract: The magnetic tape has a magnetic layer containing ferromagnetic powder and binder on one surface of a nonmagnetic support, and has a backcoat layer containing nonmagnetic powder and binder on the other surface thereof, wherein the magnetic layer contains one or more components selected from the group consisting of a fatty acid and a fatty acid amide; the backcoat layer has a thickness of less than or equal to 0.30 ?m and contains one or more components selected from the group consisting of a fatty acid and a fatty acid amide; a magnetic layer side C—H derived C concentration is greater than or equal to 45 atom %; and a backcoat layer side C—H derived C concentration is greater than or equal to 35 atom %.Type: GrantFiled: July 25, 2016Date of Patent: August 1, 2017Assignee: FUJIFILM CorporationInventor: Norihito Kasada
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Patent number: 9721605Abstract: Provided is a magnetic tape, which comprises, on a nonmagnetic support, a nonmagnetic layer comprising nonmagnetic powder and binder, and on the nonmagnetic layer, a magnetic layer comprising ferromagnetic powder and binder; wherein at least the magnetic layer comprises one or more components selected from the group consisting of a fatty acid and a fatty acid amide; a quantity of components selected from the group consisting of a fatty acid and a fatty acid amide per unit area of the magnetic tape among components that are extracted from a surface on the magnetic layer side of the magnetic tape is less than or equal to 15.0 mg/m2, and a concentration of carbon, C, that is obtained by X-ray photoelectron spectroscopy conducted at a photoelectron take-off angle of 10 degrees on the surface on the magnetic layer side of the magnetic tape is greater than or equal to 50 atom %.Type: GrantFiled: December 22, 2015Date of Patent: August 1, 2017Assignee: FUJIFILM CorporationInventors: Masahito Oyanagi, Norihito Kasada, Toshio Tada, Kazuyuki Kitada
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Patent number: 9711174Abstract: Provided is a magnetic tape, which comprises, on a nonmagnetic support, a nonmagnetic layer comprising nonmagnetic powder and binder, and on the nonmagnetic layer, a magnetic layer comprising ferromagnetic powder and binder; wherein a total thickness of the magnetic tape is less than or equal to 4.80 ?m; at least the magnetic layer comprises one or more components selected from the group consisting of a fatty acid and a fatty acid amide; and a C—H derived carbon, C, concentration calculated from a C—H peak area ratio in a C1s spectrum obtained by X-ray photoelectron spectroscopy conducted at a photoelectron take-off angle of 10 degrees on a surface on the magnetic layer side of the magnetic tape is greater than or equal to 45 atom %.Type: GrantFiled: December 24, 2015Date of Patent: July 18, 2017Assignee: FUJIFILM CorporationInventors: Norihito Kasada, Masahito Oyanagi, Toshio Tada, Kazuyuki Kitada
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Patent number: 9704527Abstract: The magnetic tape has on one surface of a nonmagnetic support a magnetic layer containing ferromagnetic powder and binder, and on the other surface of the nonmagnetic support, a backcoat layer containing nonmagnetic powder and binder, wherein the total thickness of the magnetic tape is less than or equal to 4.80 ?m, the backcoat layer contains one or more components selected from the group consisting of a fatty acid and a fatty acid amide, and a C—H derived carbon, C, concentration calculated from a C—H peak area ratio in a C1s spectrum obtained by X-ray photoelectron spectroscopy conducted at a photoelectron take-off angle of 10 degrees on a surface on the backcoat layer side of the magnetic tape ranges from 35 to 60 atom %.Type: GrantFiled: February 24, 2016Date of Patent: July 11, 2017Assignee: FUJIFILM CorporationInventor: Norihito Kasada
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Patent number: 9646643Abstract: A method of fabricating a magnetic recording medium sequentially forms a magnetic recording layer, a protection layer, and a lubricant layer on a stacked body. The lubricant layer is formed on a surface of the protection layer by vapor-phase lubrication without exposing the stacked body to atmosphere after forming the protection layer on the stacked body. Nitrogen atoms or oxygen atoms are injected onto the surface of the protection layer after forming the protection layer and before forming the lubricant layer.Type: GrantFiled: February 4, 2014Date of Patent: May 9, 2017Assignee: SHOWA DENKO K.K.Inventor: Ichiro Ota
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Patent number: 9340705Abstract: There is disclosed a fluorine-based surface treating agent for vapor deposition comprising (A) a hydrolyzable group-containing silane modified with a polymer containing a fluorooxyalkylene group and/or a partial hydrolytic condensate, and (B) a polymer containing a fluorooxyalkylene group having a higher weight average molecular weight than component (A), wherein components (A) and (B) are mixed in a weight ratio of from 6:4 to 9:1.Type: GrantFiled: November 23, 2012Date of Patent: May 17, 2016Assignee: Shin-Etsu Chemical Co., Ltd.Inventors: Yuji Yamane, Noriyuki Koike
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Patent number: 9297075Abstract: A plasma deposition apparatus that includes a high-frequency electrode caused to face a deposition target and a ground electrode connected to the deposition target, and deposits a film on the deposition target by using plasma generated between the high-frequency electrode and the ground electrode, wherein the high-frequency electrode includes a first high-frequency electrode caused to face a first deposition target surface of the deposition target, and a second high-frequency electrode caused to face a second deposition target surface on the opposite side of the first deposition target surface, and the first high-frequency electrode, the second high-frequency electrode, and the ground electrode generate plasma between the first high-frequency electrode and the ground electrode for performing deposition on the first deposition target surface and plasma between the second high-frequency electrode and the ground electrode for performing deposition on the second deposition target surface at the same time.Type: GrantFiled: August 30, 2011Date of Patent: March 29, 2016Assignee: MITSUBISHI ELECTRIC CORPORATIONInventor: Atsuro Hama
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Patent number: 9263078Abstract: A method for patterning a magnetic thin film on a substrate includes: providing a pattern about the magnetic thin film, with selective regions of the pattern permitting penetration of energized ions of one or more elements. Energized ions are generated with sufficient energy to penetrate selective regions and a portion of the magnetic thin film adjacent the selective regions. The substrate is placed to receive the energized ions. The portions of the magnetic thin film are rendered to exhibit a magnetic property different than selective other portions. A method for patterning a magnetic media with a magnetic thin film on both sides of the media is also disclosed.Type: GrantFiled: September 17, 2013Date of Patent: February 16, 2016Assignee: APPLIED MATERIALS, INC.Inventors: Steven Verhaverbeke, Omkaram Nalamasu, Majeed A. Foad, Mahalingam Venkatesan, Nety M. Krishna
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Patent number: 9057142Abstract: The invention relates to a coating (7) made up of a metal layer (8), in which a lubricant (1) which can be released by wear is embedded. In order to provide a wear-resistant coating (7) which is simply structured and economical to produce, the invention provides for the lubricant (1) to consist of an at least singly branched organic compound (2). The present invention further relates to a self-lubricating component (11) with a coating (7) according to the invention applied at least in certain portions, to a method for producing a coating (7), and also to a coating electrolyte (10) comprising at least one type of metal ions and at least one lubricant (1) consisting of an at least singly branched organic compound (2).Type: GrantFiled: July 30, 2010Date of Patent: June 16, 2015Assignees: Tyco Electronics AMP GmbH, Tyco Electronics CorporationInventors: Dominique Freckmann, Helge Schmidt
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Patent number: 9054298Abstract: A spin transfer torque magnetic random access memory (STTMRAM) element and a method of manufacturing the same is disclosed having a free sub-layer structure with enhanced internal stiffness. A first free sub-layer is deposited, the first free sub-layer being made partially of boron (B), annealing is performed of the STTMRAM element at a first temperature after depositing the first free sub-layer to reduce the B content at an interface between the first free sub-layer and the barrier layer, the annealing causing a second free sub-layer to be formed on top of the first free sub-layer and being made partially of B, the amount of B of the second free sub-layer being greater than the amount of B in the first free sub-layer.Type: GrantFiled: April 4, 2012Date of Patent: June 9, 2015Assignee: Avalanche Technology, Inc.Inventors: Yuchen Zhou, Yiming Huai
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Patent number: 9051636Abstract: An organic layer deposition apparatus including a deposition source for discharging a deposition material; a deposition source nozzle unit arranged at a side of the deposition source and including a plurality of deposition source nozzles; a patterning slit sheet arranged opposite to the deposition source nozzle unit and including a plurality of patterning slits; an electrostatic chuck, a substrate being attachable to and detachable from the electrostatic chuck; chuck moving members combined with the electrostatic chuck and configured to move the electrostatic chuck; and guide members to guide movement of the chuck moving members, the chuck moving members including first magnetic force generators, and the guide members including second magnetic force generators corresponding to the first magnetic force generators, the chuck moving members movable on the guide members by magnetic forces generated by the first magnetic force generators and the second magnetic force generators.Type: GrantFiled: October 4, 2012Date of Patent: June 9, 2015Assignee: Samsung Display Co., Ltd.Inventor: Dong-Wook Kim
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Publication number: 20150147481Abstract: A method for making a scissoring type current-perpendicular-to-the-plane magnetoresistive sensor with exchange-coupled soft side shields uses oblique angle ion milling to remove unwanted material from the side edges of the upper free layer. All of the layers making up the sensor stack are deposited as full films. The sensor stack is then ion milled to define the sensor side edges. The side regions are then refilled by deposition of an insulating layer. Next, the lower soft magnetic layers of the exchange-coupled side shields are deposited, which also coats the insulating layer up to and past the side edges of the upper free layer. The soft magnetic material adjacent the side edges of the upper free layer is removed by oblique angle ion beam milling. The material for the antiparallel-coupling (APC) layers is deposited, followed by deposition of the material for the upper soft magnetic layers of the exchange-coupled side shields.Type: ApplicationFiled: November 20, 2013Publication date: May 28, 2015Applicant: HGST Nertherlands B..V.Inventors: Patrick Mesquita Braganca, Jordan Asher Katine, Neil Smith
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Publication number: 20150140207Abstract: Disclosed herein is a method for preparing an electromagnetic wave shielding material. The preparation method includes: preparing a fiber matrix; sorbing a metal salt precursor to the fiber matrix by dip coating; and bringing the fiber matrix to which the metal salt precursor is sorbed with a basic solution to oxidize the metal salt precursor such that a magnetic substance can be coated onto the fiber matrix. The method can reduce preparation costs by simplifying the preparation process through dip coating without using a high temperature process. Further, the method can also be applied to a fiber matrix which can be affected by temperature, thereby enlarging the preparation and application range of the electromagnetic wave shielding material.Type: ApplicationFiled: November 19, 2014Publication date: May 21, 2015Inventors: Myung-Han YOON, Sukwon HONG, Zahid HANIF, Seyeong LEE
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Publication number: 20150138938Abstract: According to one embodiment, a magnetic recording medium used in a heat assisted magnetic recording system includes a magnetic recording layer and a metal particle layer in which metal particles are arranged in a dispersed manner on a substrate. In the metal particle layer, percentage content of the metal particles in a second region positioned at an outer periphery side of a first region is higher than that of the first region in a surface direction of the substrate.Type: ApplicationFiled: March 5, 2014Publication date: May 21, 2015Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Hironori Teguri, Kazutaka Takizawa
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Publication number: 20150131371Abstract: Provided are a magnetic resistance structure, a method of manufacturing the magnetic resistance structure, and an electronic device including the magnetic resistance structure. The method of manufacturing the magnetic resistance structure includes forming a hexagonal boron nitride layer, forming a graphene layer on the boron nitride layer, forming a first magnetic material layer between the boron nitride layer and the graphene layer according to an intercalation process; and forming a second magnetic material layer on the graphene layer.Type: ApplicationFiled: May 20, 2014Publication date: May 14, 2015Applicants: Samsung Electronics Co., Ltd., Sungkyunkwan University Foundation for Corporate CollaborationInventors: Hwansoo SUH, Insu JEON, Min-woo KIM, Young-jae SONG, Min WANG, Qinke WU, Sung-joo LEE, Sung-kyu JANG, Seong-jun JUNG
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Publication number: 20150111061Abstract: A method to increase the damping of a substrate using a face-centered cubic ferromagnetic damping coating having high damping loss attributes when a strain amplitude is 500-2000 micro-strain, and/or maximum damping loss attributes that occurs when the strain amplitude is greater than 250 micro-strain, and a turbine component having a face-centered cubic ferromagnetic damping coating.Type: ApplicationFiled: October 22, 2013Publication date: April 23, 2015Inventor: Mo-How Herman Shen
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Publication number: 20150111062Abstract: A method to increase the damping of a substrate using a face-centered cubic ferromagnetic damping coating having high damping loss attributes when a strain amplitude is 500-2000 micro-strain, and/or maximum damping loss attributes that occurs when the strain amplitude is greater than 250 micro-strain, and a turbine component having a face-centered cubic ferromagnetic damping coating.Type: ApplicationFiled: October 22, 2013Publication date: April 23, 2015Inventor: Mo-How Herman Shen
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Patent number: 9005699Abstract: A method for manufacturing a magnetic recording medium includes the steps of (a) forming a perpendicular magnetic recording layer and (b) applying an ion beam to regions between tracks of the perpendicular magnetic recording layer so as to form separation regions for magnetically separating the tracks from each other. In the step (a), a continuous film layer composed of a multilayer film is formed, and CoB layers and Pd layers are laminated in the multilayer film. In the step (b), the CoB layers and the Pd layers are melted by the ion beam so as to form an alloy of metals contained in the CoB layers and the Pd layers to thereby form the separation regions.Type: GrantFiled: September 27, 2007Date of Patent: April 14, 2015Assignee: WD Media, LLCInventors: Yoshiaki Sonobe, Teiichiro Umezawa, Koichi Wago
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Patent number: 8993071Abstract: Embodiments of the present invention provide a manufacturing method that can form a track guide separation area of a magnetic disk substrate constituting a patterned medium represented by a discrete track medium or bit patterned medium suitable for high recording density, uniformly on the whole surface of the magnetic disk substrate, and accurately according to the mask. According to one embodiment, a soft magnetic film, an under coating film, and a magnetic film are formed on a substrate. A mask having an arbitrary pattern shape provided for forming the track guide separation area in the magnetic film is formed on the magnetic film, and the track guide separation area is formed by irradiating ions and electrons onto the surface of the magnetic film and applying an intermittent voltage to the substrate, thereby non-magnetizing the area irradiated.Type: GrantFiled: October 20, 2008Date of Patent: March 31, 2015Assignee: HGST Netherlands B.V.Inventors: Hiroshi Inaba, Hiroshi Kanai, Nobuto Yasui, Toshinori Ono
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Publication number: 20150087945Abstract: A method of making a sensor includes depositing a layer of hydrogel over a substrate, the hydrogel configured to change thickness or volume in response to a selected condition and including a plurality of magnetic particles disposed in the hydrogel so that a magnetic property of the hydrogel changes with changes of thickness or volume of the hydrogel. The hydrogel is sacrificed in selected region(s) of the layer so that the hydrogel outside the selected region(s) forms a plurality of spaced-apart islands of the hydrogel. The islands of the hydrogel are enclosed in an enclosure at least partly permeable to a selected fluid. A sensor for detecting a condition includes the substrate, islands, and a device coil arranged with respect to the hydrogel so that changes in the magnetic property modulate an electrical property of the sensor. A system includes the substrate, islands, and a magnetic-field detector.Type: ApplicationFiled: December 1, 2014Publication date: March 26, 2015Inventors: Babak Ziaie, Ronald A. Siegel
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Publication number: 20150072071Abstract: According to one embodiment, there is provided a pattern formation method including coating a substrate or mask layer with a fine particle coating solution containing fine particles including a protective group having a close surface polarity and containing, on at least surfaces thereof, a material selected from the group consisting of Al, Ti, V, Cr, Mn, Fe, Co, Ni, Zn, Y, Zr, Sn, Mo, Ta, W, and oxides thereof, a viscosity modifier, and a solvent for adjusting mixing of the viscosity modifier and the fine particles having the protective group, thereby forming a fine particle layer on the substrate or mask layer.Type: ApplicationFiled: January 27, 2014Publication date: March 12, 2015Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Kaori KIMURA, Kazutaka Takizawa, Akira Fujimoto
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Publication number: 20150064492Abstract: The present disclosure provides materials exhibiting improved properties arising from a surface treatment thereof. In particular, thin films can be provided with a patterned surface, the patterned thin films exhibiting improved properties such as in relation to coercivity, mechanical coupling, and magnetic coupling. The disclosure further provides layered composites comprising one or more patterned thin films. The disclosure also provides methods of forming patterned thin films.Type: ApplicationFiled: August 28, 2014Publication date: March 5, 2015Inventors: Goran Rasic, Justin Schwartz
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Publication number: 20150064347Abstract: An object of the present invention is to obtain a hard disk substrate that can have a smooth surface of a plating film through electroless NiP plating and does not have deteriorated corrosion resistance against acid solutions. A method for producing a hard disk substrate of the present invention includes a first plating step of immersing a substrate in a first electroless NiP plating bath containing an additive with leveling action, thereby forming a lower layer of the electroless NiP plating film on a surface of the substrate, the lower layer having smaller average surface roughness than the surface; and a second plating step of immersing the substrate that has the lower layer of the electroless NiP plating film formed thereon through the first plating step in a second electroless NiP plating bath, thereby forming an upper layer of the electroless NiP plating film, the upper layer having corrosion resistance against acid solutions.Type: ApplicationFiled: April 2, 2013Publication date: March 5, 2015Applicant: Toyo Kohan Co., Ltd.Inventors: Gen Ishida, Nobuaki Mukai, Takahiro Yoshida
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Patent number: 8968874Abstract: Microspheres, populations of microspheres, and methods for forming microspheres are provided. One microsphere configured to exhibit fluorescent and magnetic properties includes a core microsphere and a magnetic material coupled to a surface of the core microsphere. About 50% or less of the surface of the core microsphere is covered by the magnetic material. The microsphere also includes a polymer layer surrounding the magnetic material and the core microsphere. One population of microspheres configured to exhibit fluorescent and magnetic properties includes two or more subsets of microspheres. The two or more subsets of microspheres are configured to exhibit different fluorescent and/or magnetic properties. Individual microspheres in the two or more subsets are configured as described above.Type: GrantFiled: October 23, 2013Date of Patent: March 3, 2015Assignee: Luminex CorporationInventors: Don J. Chandler, Jason Bedre
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Publication number: 20150056368Abstract: Enhanced Hc and Hk in addition to higher thermal stability to 400° C. are achieved in magnetic devices by adding dusting layers on top and bottom surfaces of a spacer in a synthetic antiferromagnetic (SAF) structure to give a RL1/DL1/spacer/DL2/RL2 reference layer configuration where RL1 and RL2 layers exhibit perpendicular magnetic anisotropy (PMA), the spacer induces antiferromagnetic coupling between RL1 and RL2, and DL1 and DL2 are dusting layers that enhance PMA. Dusting layers are deposited at room temperature to 400° C. RL1 and RL2 layers are selected from laminates such as (Ni/Co)n, L10 alloys, or rare earth-transition metal alloys. The reference layer may be incorporated in STT-MRAM memory elements or in spintronic devices including a spin transfer oscillator. A transition layer such as CoFeB/Co may be formed between the RL2 reference layer and tunnel barrier layer in a bottom spin valve design.Type: ApplicationFiled: October 10, 2014Publication date: February 26, 2015Inventors: Yu-Jen Wang, Witold Kula, Ru-Ying Tong, Guenole Jan
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Publication number: 20150050514Abstract: A coating method for producing a function layer on mechanically loaded components or surfaces includes providing or applying a first material layer of a first material or substrate matrix having a mechanical flexibility higher than that of a second material on a substrate constituting the component or the surface, respectively, structuring the first material layer such that the material layer surface of the first material layer, which is opposite to the substrate, obtains a three-dimensionally moulded basic structure with projections and recesses, and coating the material layer surface of the first material layer with a second material layer of the second material in such a way that the second material layer adopts substantially the basic structure of the material layer surface with the projections and recesses. Also, surface layer structures can be produced by this method.Type: ApplicationFiled: March 12, 2013Publication date: February 19, 2015Inventors: Stefan Storm, Erhard Brandl, Dominik Raps
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Patent number: 8940419Abstract: Provided are a method for production of a hard disk substrate capable of obtaining a smooth surface of a plating film by electroless NiP plating that is not degraded in, but exhibits corrosion resistance against, an acid solution and such a hard disk substrate.Type: GrantFiled: October 4, 2011Date of Patent: January 27, 2015Assignee: Toyo Kohan Co., Ltd.Inventor: Nobuaki Mukai
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Patent number: 8932667Abstract: A method including forming a multilayer structure. The multilayer structure includes a seed layer comprising a first component selected from the group consisting of a Pt-group metal, Fe, Mn, Ir and Co. The multilayer structure also includes an intermediate layer comprising the first component and a second component selected from the group consisting of a Pt-group metal, Fe, Mn, Ir and Co. The second component is different than the first component. The multilayer structure further includes a cap layer comprising the first component. The method further includes heating the multilayer structure to an annealing temperature to cause a phase transformation of the intermediate layer. Also a hard magnet including a seed layer comprising a first component selected from the group consisting of a Pt-group metal, Fe, Mn, Ir and Co. The hard magnet also includes a cap layer comprising the first component. The hard magnet further includes an intermediate layer between the seed layer and the cap layer.Type: GrantFiled: April 30, 2008Date of Patent: January 13, 2015Assignee: Seagate Technology LLCInventors: Jiaoming Qiu, Younghua Chen, Xilin Peng, Shaun McKinlay, Eric W. Singleton, Brian W. Karr
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Patent number: 8927464Abstract: Fluidics-induced localized deposition and assembly of materials using a superhydrophobic surface structure is described. A method of localized deposition of a material includes contacting a superhydrophobic substrate comprising raised surface structures with a non-wetting fluid comprising a material to be locally deposited or a precursor thereto, said surface and said fluid selected such that the fluid wets only an upper portion of the raised surface structure; and allowing the material to deposit at the tips of the surface structure.Type: GrantFiled: December 1, 2008Date of Patent: January 6, 2015Assignee: President and Fellows of Harvard CollegeInventors: Joanna Aizenberg, Benjamin Hatton
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Patent number: 8920948Abstract: According to one embodiment, a patterned magnetic storage medium is disclosed herein. The magnetic storage medium includes a pattern formed on a substrate. The pattern includes at least a first and second feature and an edge defined between the first and second features. Additionally, the magnetic storage medium includes a magnetic layer formed on the pattern. The magnetic layer includes grains separated by a non-magnetic segregant boundary. The segregant boundary is positioned above the edge of the pattern.Type: GrantFiled: December 31, 2011Date of Patent: December 30, 2014Assignee: HGST Netherlands B.V.Inventors: Liesl Folks, Michael K. Grobis, Dan S. Kercher, Ricardo Ruiz, Kentaro Takano, Bruce D. Terris, Qing Zhu
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Patent number: 8900730Abstract: A magnetic data storage medium comprising: an ion doped magnetic recording layer having a continuous grading of coercivity or anisotropy, wherein the coercivity or anisotropy is at a minimum substantially at one side of the magnetic recording layer, and having substantial portion of maximum coercivity or anisotropy at the other side of the magnetic recording layer. Also, a method of fabricating a magnetic data storage medium is included.Type: GrantFiled: January 31, 2012Date of Patent: December 2, 2014Assignee: International Business Machines CorporationInventors: Charanjit Singh Bhatia, Koashal Kishor Mani Pandey, Nikita Gaur, Siegfried L. Maurer, Ronald W. Nunes