With Post-treatment Of Coating Or Coating Material Patents (Class 427/130)
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Patent number: 8137590Abstract: Solid particles bearing zwitterionic functional groups exhibit properties unlike other functionalized particles, and are particularly useful as proton-conductive fillers in membranes for fuel cells, where they increase physical properties as well as charge conducting properties. The particles are prepared by reacting functionalized particles with zwitterionic group-containing silanes or siloxanes.Type: GrantFiled: October 5, 2006Date of Patent: March 20, 2012Assignee: Wacker Chemie AGInventors: Christoph Briehn, Peter Ball, Martina Baumann, Torsten Gottschalk-Gaudig, Manfred Hoelzl
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Publication number: 20120063278Abstract: A core includes a first core, and a second core covering a side surface of the first core, and is formed in a polygonal shape when viewed from a Z direction. A metal film is placed on a side surface in the core, and is formed so that a width of an interface between the metal film and the core is narrower than a width of the side surface of the core.Type: ApplicationFiled: September 13, 2011Publication date: March 15, 2012Inventors: Masakazu Hirata, Norio Chiba, Manabu Oumi, Yoko Shinohara, Sachiko Tanabe, Yoshikazu Tanaka
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Patent number: 8133332Abstract: A method includes: constructing a multilayer structure including a first layer of Pt, a first layer of A1 phase FePt on the first layer of Pt, and a second layer of Pt on the layer of FePt, and annealing the multilayer structure to convert the A1 phase FePt to L1o phase FePt.Type: GrantFiled: February 12, 2009Date of Patent: March 13, 2012Assignee: Seagate Technology LLCInventors: Jiaoming Qiu, Yonghua Chen, Ganping Ju
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Patent number: 8133530Abstract: One-sided magnetic media for a hard disk drive. Methods are implemented to create a magnetic media with only one surface capable of recording data. The second surface is a non-data recording side of the media and is constructed so that it does not interfere with the recording properties of the recording side or the structural usefulness of the media. Additionally, the second surface can be a low quality surface capable of limited magnetic recording.Type: GrantFiled: July 22, 2008Date of Patent: March 13, 2012Assignee: Hitachi Global Storage Technologies Netherlands B.V.Inventors: Shanlin Duan, Kenneth Johnson, Owen Melroy
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Publication number: 20120052193Abstract: A magnetic stack structure is disclosed. The magnetic stack structure includes two metal layers and a free layer sandwiched by the two metal layers. The thickness of the free layer is 1-30 nm. The thickness of the metal layers are 0.1-20 nm respectively.Type: ApplicationFiled: January 12, 2011Publication date: March 1, 2012Inventors: Te-Ho WU, Lin-Hsiu YE, Ching-Ming LEE
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Publication number: 20120045663Abstract: A method of manufacturing a magnetic recording medium with high recording density and enabling stable flight of a magnetic head, with high manufacturing yields, is provided. The method includes layering a magnetic layer, a protective layer, and a lubricating layer in order on a substrate, and forming a medium for transfer. The method further includes transferring a magnetic pattern to the medium for transfer, and flattening a surface of the lubricating layer of the medium for transfer for which the magnetic pattern transferring is completed. The surface of the lubricating layer is flattened either by wiping the surface of the lubricating layer using a member without a cutting effect, or by heating the surface of the lubricating layer.Type: ApplicationFiled: May 10, 2011Publication date: February 23, 2012Applicant: Fuji Electric Device Technology Co., Ltd.Inventor: Narumi SATO
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Patent number: 8105444Abstract: A process for producing a highly anticorrosive rare earth permanent magnet, characterized by sequentially subjecting an R—Fe—B sintered magnet to surface finishing involving cutting and/or polishing, plating pretreatment, nickel electroplating to a given plating thickness, immersion in an aqueous solution containing a phosphoric salt, washing with water and heat treatment at 150° to 400° C. for 1 to 24 hr in an atmosphere of 1.3×103 Pa or higher oxygen partial pressure so as to form a thin nickel oxide layer at the surface layer portion.Type: GrantFiled: May 30, 2007Date of Patent: January 31, 2012Assignee: Shin-Etsu Chemical Co., Ltd.Inventor: Kazuo Tamura
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Publication number: 20120018513Abstract: A security element, particularly for banknotes, security cards and the like, comprising a first substrate which is at least partially opaque when viewed in transmitted light, and a plurality of magnetic areas being arranged on the substrate, wherein each of the magnetic areas is formed by a first magnetic material, a second magnetic material or an arrangement of the first and the second magnetic materials being at least partially superimposed, the first magnetic material and the second magnetic material exhibiting different coercivity values which are detectable by a sensor, wherein the first and second magnetic materials are magnetically saturated such that one of the first and second magnetic materials is not affected by the other.Type: ApplicationFiled: April 1, 2009Publication date: January 26, 2012Applicant: FEDRIGONI S.P.A.Inventor: Maurizio Lazzerini
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Publication number: 20120018665Abstract: An aspect of the present invention relates to a method of preparing a magnetic particle, which comprises attaching a transition metal-containing organic compound to a surface of a hard magnetic particle and then thermally decomposing the transition metal-containing organic compound to obtain the magnetic particle.Type: ApplicationFiled: July 22, 2011Publication date: January 26, 2012Applicants: TOHOKU UNIVERSITY, FUJIFILM CORPORATIONInventors: Yasushi HATTORI, An-Pang TSAI, Satoshi KAMEOKA
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Publication number: 20120003689Abstract: A process for making a particulate material comprising mesoporous particles having granules of a metal containing species in at least some of the pores thereof, said process comprising: allowing a compound of the metal to enter pores of hydrophobic mesoporous particles, said compound being thermally decomposable at a decomposition temperature to form a metal containing species and said particles being substantially thermally stable at said decomposition temperature; and heating the hydrophobic mesoporous particles having the compound in the pores thereof to the decomposition temperature so as to decompose the compound and to form the mesoporous particles having granules of the metal containing species in at least some of the pores thereof.Type: ApplicationFiled: November 17, 2008Publication date: January 5, 2012Applicant: Agency for Science, Technology and ResearchInventors: Jackie Y. Ying, Su Seong Lee, Siti Nurhanna Binte Riduan, yu Han
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Publication number: 20120002326Abstract: A perpendicular magnetic write head includes: a magnetic pole; a pair of nonmagnetic side gap layers provided on both sides in a track-width direction of the magnetic pole; a nonmagnetic trailing gap layer provided on a trailing side of the magnetic pole; a magnetic shield layer so provided as to surround the magnetic pole with both of the nonmagnetic side gap layer and the nonmagnetic trailing gap layer in between; and a magnetic seed layer formed between the nonmagnetic trailing gap layer and the magnetic shield layer, and having a saturation magnetic flux density higher than that of the magnetic shield layer. The magnetic seed layer is not formed between the nonmagnetic side gap layer and the magnetic shield layer.Type: ApplicationFiled: June 30, 2010Publication date: January 5, 2012Applicant: SAE Magnetics (H.K.) Ltd.Inventors: Tetsuya Mino, Naoto Matono, Ikuhito Onodera, Kazushi Nishiyama, Michitoshi Tsuchiya, Kenji Sasaki
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Publication number: 20110299198Abstract: The present invention relates to a magnetic recording medium comprising a magnetic layer comprising a ferromagnetic powder and a binder on a nonmagnetic support, wherein the magnetic layer has a thickness ? ranging from 10 to 80 nm, a product, Mr?, of a residual magnetization Mr of the magnetic layer and the thickness ? of the magnetic layer is equal to or greater than 1 mA but less than 5 mA, a ratio, Sdc/Sac, of an average area Sdc of magnetic clusters in a DC demagnetized state to an average area Sac of magnetic clusters in an AC demagnetized state as measured by a magnetic force microscope, MFM, ranges from 0.8 to 2.0.Type: ApplicationFiled: May 4, 2011Publication date: December 8, 2011Applicant: FUJIFILM CorporationInventors: Toshio TADA, Takeshi Harasawa
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Patent number: 8072304Abstract: A noncontact power-transmission coil is provided. The noncontact power-transmission coil includes a planar coil and a magnetic layer. The planar coil is formed by winding a linear conductor in a spiral shape substantially in a single plane. The magnetic layer is formed by applying a liquid-form magnetic solution in which magnetic particles are mixed with a binder solvent, so as to cover one planar portion of the planar coil and a side-face portion of the planar coil.Type: GrantFiled: January 7, 2008Date of Patent: December 6, 2011Assignees: Sony Ericsson Mobile Communications Japan, Inc., Seiko Epson CorporationInventors: Hiroshi Kato, Kuniharu Suzuki, Katsuya Suzuki, Manabu Yamazaki, Yoichiro Kondo, Kota Onishi, Kentaro Yoda, Mikimoto Jin, Takahiro Kamijo, Haruhiko Sogabe
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Patent number: 8067104Abstract: A magnetic recording medium includes a substrate; and a recording film formed on the substrate and including a main magnetic film, the main magnetic film where a recording area and a guard area are formed by local ion doping, the guard area having saturation magnetization smaller than saturation magnetization of the recording area. A primary layer is provided at a substrate side of the main magnetic film. A main ingredient of the primary layer is at least one kind of atom selected from a group consisting of Cr, B, Mo, Al, Si, and C.Type: GrantFiled: November 17, 2008Date of Patent: November 29, 2011Assignee: Fujitsu LimitedInventors: Tsutomu Tanaka, Kenji Sato
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Publication number: 20110281025Abstract: The invention provides curable compositions for transfer materials suited for nanoimprinting, which have very high transfer properties in a nanoimprinting process, show high selectivity in dry etching rate between by argon gas and by oxygen gas, and can be fabricated into fine patterns with high throughput.Type: ApplicationFiled: January 26, 2010Publication date: November 17, 2011Applicant: Showa Denko K.K.Inventors: Yoshikazu Arai, Hiroshi Uchida
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Patent number: 8048492Abstract: A magnetoresistive effect element is produced by forming a first magnetic layer, a spacer layer including an insulating layer and a conductive layer which penetrates through the insulating layer and passes a current, on the first magnetic layer, and a second magnetic layer all of which or part of which is treated with ion, plasma or heat, on the formed spacer layer.Type: GrantFiled: December 20, 2006Date of Patent: November 1, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Hideaki Fukuzawa, Hiromi Yuasa, Yoshihiko Fuji, Hitoshi Iwasaki
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Patent number: 8039045Abstract: An object of the present invention is to provide a plating method on a glass base plate. The method allows forming a plating film on a base plate composed of a glass material with excellent adhesivity and homogeneity by means of an electroless plating method even to a thickness of 1 ?m or more. Before forming a plating film by a step of electroless plating S6, a surface treatment process is conducted on a surface of the base plate composed of a glass material. The surface treatment process comprises at least a step of glass activation treatment S2 to increase quantity of silanol groups on the surface of the base plate at least by a factor of two using an aqueous solution of diluted acid, a step of silane coupling agent treatment S3, a step of palladium catalyst treatment S4, and a step of palladium bonding treatment S5.Type: GrantFiled: July 27, 2005Date of Patent: October 18, 2011Assignee: Fuji Electric Co., Ltd.Inventors: Youichi Tei, Akira Iso, Kazuhito Higuchi, Hajime Kurihara, Hiroyuki Uwazumi
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Patent number: 8034413Abstract: A method for manufacturing discrete track media and patterned media is disclosed which enables a magnetic recording layer having excellent magnetic characteristics to be obtained without imparting damage to a crystal orientation control layer which is at the surface when forming the magnetic recording layer. The method for manufacturing magnetic recording media comprises a process of forming a soft magnetic layer on a substrate; a process of forming a first crystal orientation control layer on the soft magnetic layer; a process of providing a depression in at least a portion of the first crystal orientation control layer; a process of performing heat treatment of the first crystal orientation control layer; and a process of forming a magnetic recording layer on the first crystal orientation control layer.Type: GrantFiled: November 10, 2008Date of Patent: October 11, 2011Assignee: Fuji Electric Co., Ltd.Inventor: Shinji Uchida
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Publication number: 20110244118Abstract: Magnetic storage media and methods for constructing magnetic storage media that include a multilayer structure are described. In general, the magnetic storage media include a substrate, an underlayer formed over the substrate, and a magnetic layer that includes a plurality of magnetic particles formed over the underlayer. In some examples, a magnetic recording medium can be formed by forming an underlayer over a substrate, drying the underlayer, and heat-curing the underlayer prior to forming a magnetic layer over the underlayer. A magnetic layer can then be formed over the underlayer. The magnetic layer may includes a plurality of magnetic particles selected from the group consisting of magnetic platelet-shaped particles and magnetic particles with an aspect ratio less than or equal to approximately 1.5, may then be formed over the underlayer.Type: ApplicationFiled: April 2, 2010Publication date: October 6, 2011Applicant: Imation Corp.Inventors: David C. Lowery, Stephen R. Ebner, Bruce H. Edwards, Ryosuke Isobe, Larold L. Olson, Michael P. Sharrock, Scott A. Walker
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Publication number: 20110244114Abstract: Magnetic storage media and methods for constructing magnetic storage media that include a multilayer structure are described. In some examples, a magnetic recording medium can be formed by forming an underlayer over a substrate, drying the underlayer, milling a plurality of magnetic particles, and forming a magnetic layer that includes the plurality of magnetic particles over the underlayer. The magnetic particles may be selected from the group consisting of magnetic platelet-shaped particles and magnetic particles with an aspect ratio less than or equal to approximately 1.5. In addition, the milling process may include milling the plurality of magnetic particles so a magnetic medium formed in the absence of an applied magnetic field exhibits a longitudinal squareness less than or equal to approximately 0.40.Type: ApplicationFiled: April 2, 2010Publication date: October 6, 2011Applicant: Imation Corp.Inventors: David C. Lowery, Stephen R. Ebner, Bruce H. Edwards, Ryosuke Isobe, Larold L. Olson, Michael P. Sharrock, Scott A. Walker
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Publication number: 20110234345Abstract: According to one aspect of the present invention, a combined magnetic body includes a plurality of nanowires composed of a magnetic material. In the combined magnetic body, the nanowires are combined together to be formed into a tubular structure or a basket-shaped structure.Type: ApplicationFiled: November 28, 2008Publication date: September 29, 2011Inventors: Hiroshi Onodera, Atsushi Nakahira
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Publication number: 20110235217Abstract: Methods for forming a magnetic tunnel junction (MTJ) storage element and MTJ storage elements formed are disclosed. The MTJ storage element includes a MTJ stack having a pinned layer stack, a barrier layer and a free layer. An adjusting layer is formed on the free layer, such that the free layer is protected from process related damages. A top electrode is formed on the adjusting layer and the adjusting layer and the free layer are etched utilizing the top electrode as a mask. A spacer layer is then formed, encapsulating the top electrode, the adjusting layer and the free layer. The spacer layer and the remaining portions of the MTJ stack are etched. A protective covering layer is deposited over the spacer layer and the MTJ stack.Type: ApplicationFiled: March 29, 2010Publication date: September 29, 2011Applicant: QUALCOMM IncorporatedInventors: Wei-Chuan Chen, Seung H. Kang
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Patent number: 8021713Abstract: A recessed field is formed surrounding resist columns that are in a pattern of bit patterned magnetic media. A filler layer is formed in the recessed field. The resist columns are removed to leave recesses in the filler layer that replicate the pattern. Bit patterned magnetic media is formed in the recesses.Type: GrantFiled: July 18, 2008Date of Patent: September 20, 2011Assignee: Seagate Technology LLCInventor: Sethuraman Jayashankar
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Patent number: 8021712Abstract: The present invention relates to a wafer formed with an evaluation element and capable of improving productivity and a manufacturing method of an electronic component using the same. In a wafer according to the present invention, a plurality of elements connected to electrode films through lead-out conductive films are arranged and a chip area is defined for cutting out the plurality of elements in a given number. In the wafer, at least one evaluation element is formed in an area outside the chip area. The lead-out conductive films extend to the outside area and are connected to the evaluation elements. With this wafer, since the lead-out conductor is shared between the element and the evaluation element, the electrode film connected therewith can be shared, too.Type: GrantFiled: March 18, 2009Date of Patent: September 20, 2011Assignee: TDK CorporationInventors: Osamu Nakazawa, Nozomu Hachisuka, Tetsuya Hiraki
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Publication number: 20110222189Abstract: A patterned magnetic recording medium, accessible by a magnetic recording head, including a plurality of tracks, a width direction of each track and that of the magnetic recording head being of a skew angle. The patterned magnetic recording medium includes a plurality of magnetic dots, each corresponding to a recording bit, formed on a non-magnetic material. The plurality of magnetic dots are arranged in a plurality of arrays, each array corresponding to one of the tracks. Every N adjacent magnetic dots of the array define a polygon, one side thereof being parallel to the corresponding track, and another side thereof being parallel to a direction corresponding to the skew angle of the corresponding track.Type: ApplicationFiled: November 15, 2010Publication date: September 15, 2011Applicant: Fuji Electric Device Technology Co., Ltd.Inventor: Shinji Uchida
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Publication number: 20110221431Abstract: Provided is a method of fabricating a magnetic axis-controlled structure. The method of fabricating a magnetic axis-controlled structure includes providing a composition including magnetic nanoparticles dispersed in a liquid medium, applying a magnetic field to the composition to align the magnetic nanoparticles along the magnetic field and form a magnetic axis, and solidifying the liquid medium to fix the magnetic axis.Type: ApplicationFiled: March 3, 2011Publication date: September 15, 2011Inventors: Sunghoon KWON, Hyoki Kim, Junhoi Kim, Howon Lee
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Patent number: 8009387Abstract: A method for forming a protective bilayer on a magnetic read/write head or magnetic disk. The bilayer is formed as an adhesion enhancing underlayer and a protective diamond-like carbon (DLC) overlayer. The underlayer is formed of an aluminum or alloyed aluminum oxynitride, having the general formula AlOxNy or MezAlOxNy where Mez symbolizes Tiz, Siz or Crz and where x, y and z can be varied within the formation process. By adjusting the values of x and y the adhesion underlayer contributes to such qualities of the protective bilayer as stress compensation, chemical and mechanical stability and low electrical conductivity. Various methods of forming the underlayer are provided, including reactive ion sputtering, plasma assisted chemical vapor deposition, pulsed laser deposition and plasma immersion ion implantation.Type: GrantFiled: August 2, 2010Date of Patent: August 30, 2011Assignee: SAE Magnetics (HK) Ltd.Inventors: Shide Cheng, Zhu Feng, Ellis T. Cha
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Publication number: 20110206947Abstract: By improving sliding durability while ensuring a high SNR, an improvement in reliability and a further increase in recording density are to be achieved.Type: ApplicationFiled: December 28, 2010Publication date: August 25, 2011Applicant: WD MEDIA (SINGAPORE) PTE. LTD.Inventors: Toshiaki TACHIBANA, Takahiro Onoue, Keiichi Kajita
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Publication number: 20110206834Abstract: An object of the invention is to provide curable compositions for transfer materials suited for nanoimprinting processes, which compositions have high dry etching resistance against argon gas and high selectivity of dry etching rate between by argon gas and by oxygen gas, and can be fabricated into fine patterns used as resists or the like. A curable composition for transfer materials includes a (meth)acrylate compound having a triazine skeleton which is obtainable by reacting an aminotriazine compound, a compound having a hydroxyl group and a (meth)acryloyl group in the molecule, and an aldehyde.Type: ApplicationFiled: October 19, 2009Publication date: August 25, 2011Applicant: SHOWA DENKO K.K.Inventors: Yoshikazu Arai, Hiroshi Uchida
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Patent number: 7998607Abstract: A perpendicular recording magnetic media with a partially-oxidized cap layer combines a second oxide layer with a first cap layer to form the singular, partially-oxidized cap. The oxidized portion and the non-oxidized portion of the partially-oxidized layer are sputtered from a same target and have a same composition of metallic elements. The Ms of the oxidized portion is about twice as high as the non-oxidized portion. The oxidized portion has a thickness in the range of about 5 to 25 angstroms. The layer composition may comprise CoPtCrBTa, with a Cr at % of about 18-24%, Pt at about 13-20%, B at about 4-10%, and Ta at about 0-2%.Type: GrantFiled: July 31, 2009Date of Patent: August 16, 2011Assignee: Hitachi Global Storage Technologies Netherlands, B.V.Inventor: Yoshihiro Ikeda
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Publication number: 20110195274Abstract: Provided is a substrate structure and a manufacturing method thereof, the substrate structure including a base substrate of single crystal; and a rhombohedral ferroelectric thin film exhibiting a spontaneous ferroelectric polarization and of a perovskite structure, the ferroelectric thin film being formed on a surface of the base substrate. The substrate structure may further include an optical waveguide formed on the ferroelectric thin film; and an electric field applying section that applies, to the optical waveguide, an electric field parallel to a surface of the base substrate. The electric field applying section generates the electric field so that the electric field direction of the electric field applied to the optical waveguide is parallel to a direction of the spontaneous ferroelectric polarization of the ferroelectric thin film.Type: ApplicationFiled: February 26, 2010Publication date: August 11, 2011Applicant: ADVANTEST CORPORATIONInventors: SHIN MASUDA, KAZUNORI SHIOTA, ATSUSHI SEKI
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Patent number: 7993497Abstract: In a magnetic disk having at least a glass substrate, a plurality of underlayers formed over the glass substrate, and a magnetic layer formed over the plurality of underlayers, at least one of the underlayers is an amorphous underlayer containing a VIa group element and carbon and, given that the remanent magnetization in a circumferential direction of the disk is Mrc and the remanent magnetization in a radial direction of the disk is Mrr, the magnetic disk has a magnetic anisotropy in which Mrc/Mrr being a ratio between Mrc and Mrr exceeds 1.Type: GrantFiled: November 21, 2006Date of Patent: August 9, 2011Assignee: WD Media (Singapore) Pte. Ltd.Inventors: Keiji Moroishi, Chor Boon Ang
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Patent number: 7989065Abstract: Magnetically responsive particles can include two or more magnetically responsive layers (“MRL”). As such, the particles can have the following: a polymeric core; a first magnetically responsive layer (“MRL”) on the core; a first polymeric layer bound to the first MRL; a second MRL layer bound to the first polymeric layer; and a second polymeric layer bound to the second MRL. The particles can have a faster magnetic response time compared to a similar particle having only a single MRL, which can be at least 25% faster. Also, the particle can have a magnetic squareness of less than about 0.1. Preferably, the particle can have negligible residual magnetism after being exposed to a magnetic field sufficient for the particle to respond thereto. Further, the particle can be colloidally stable in water at concentrations from about 0.1 to 10 grams of particle per 100 milliliters of water.Type: GrantFiled: May 18, 2006Date of Patent: August 2, 2011Assignee: Seradyn, Inc.Inventors: J Winstead, William L. Grimm
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Publication number: 20110171425Abstract: A method is disclosed for defining discrete magnetic and non-magnetic regions on the magnetic film layer of a storage media substrate. The method applies anodic oxidation of a cobalt-containing magnetic film layer to remove cobalt, followed by controlled deposition of a non-magnetic matrix into the regions where the cobalt has been removed. Deposition may either be electrodeposition, collimated vacuum deposition, or other methods depending upon the composition of the non-magnetic matrix being deposited. The method may be performed in a single electrochemical cell.Type: ApplicationFiled: January 11, 2010Publication date: July 14, 2011Applicant: SEAGATE TECHNOLOGY LLCInventors: Ibro Tabakovic, Mark Thomas Kief, Steve Riemer, Jie Gong, Ming Sun
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Publication number: 20110164333Abstract: A thermally assisted magnetic head includes a main magnetic pole layer, a near-field light generating layer having a generating end part generating near-field light arranged within a medium-opposing surface, and an optical waveguide guiding light to the near-field light generating layer. The near-field light generating layer has a near-field light generating part in a triangle shape with the generating end part being one vertex, and is formed in a triangle pole shape. The optical waveguide is formed to be opposed to a ridge part of the near-field light generating layer via an interposed layer. The main magnetic pole layer is formed to be opposed to the generating end part via the interposed layer. The thermally assisted magnetic head further includes a heat radiating layer in contact with an opposite side of the near-field light generating layer from the optical waveguide.Type: ApplicationFiled: January 7, 2010Publication date: July 7, 2011Applicants: HEADWAY TECHNOLOGIES, INC., SAE MAGNETICS (H.K.) LTD.Inventors: Yoshitaka Sasaki, Hiroyuki Ito, Atsushi Iijima
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Patent number: 7960025Abstract: The invention relates to nanoparticles of noble metals, having a controlled microstructure which leads to the appearance of ferromagnetic behaviour in said nanoparticles, thereby enabling the use of very small magnets (<5 nm) in a range in which standard ferromagnetic metals behave as superparamagnetic entitles (disappearance of hysteresis cycle). The inventive nanoparticles can be used, for example, to reduce the dimensions in magnetic recordings, as well as in biomedicine as tools for biomolecule recognition, nuclear magnetic resonance imaging, drug-release control or hypothermia treatments.Type: GrantFiled: September 22, 2006Date of Patent: June 14, 2011Assignees: Consejo Superior De Investigaciones Cientificas, Universidad Complutense De MadridInventors: M' Asunción Fernandez Camacho, Rocio Litran Ramos, Teresa Cristina Rojas Ruiz, Juan Carlos Sanchez Lopez, Antonio Hernando Grande, Patricia Crespo Del Arco, Blanca Sampedro Rozas
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Patent number: 7950135Abstract: A manufacturing method of an MR element in which current flows in a direction perpendicular to layer planes, includes a step of forming on a lower electrode layer an MR multi-layered structure with side surfaces substantially perpendicular to the layer lamination plane, a step of forming a first insulation layer on at least the side surfaces of the formed MR multi-layered structure, a step of forming a second insulation layer and a magnetic domain control bias layer on the lower electrode layer, and a step of forming an upper electrode layer on the MR multi-layered structure and the magnetic domain control bias layer.Type: GrantFiled: May 31, 2007Date of Patent: May 31, 2011Assignee: TDK CorporationInventors: Takeo Kagami, Takayasu Kanaya
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Publication number: 20110102117Abstract: Process for the production of permanent magnets, of the kind that allows the production of nanostructured alloys (containing a volume fraction lower than 10% of the rare-earth-based stoichiometric compound) in the form of a multilayered material, comprising a stoichiometric hard phase containing rare earths localized in a series of stacked layers intercalated by soft ferromagnetic layers. According to the invention, comprises producing nanostructured elements along a respective vertical axis by means of an inkjet printing system and the parallelization of such productive phase, by means of matrices of productive elements.Type: ApplicationFiled: June 11, 2009Publication date: May 5, 2011Inventors: Alessandro Chiolerio, Paolo Allia
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Publication number: 20110075299Abstract: Embodiments provide a write pole and a magnetic shield for write heads. The write pole includes a trailing step, while the magnetic shield includes a slanted bump. The slanted bump and the trailing step provides maximize magnetic flux for writing to a magnetic media such as a magnetic storage disk in a hard disk drive, while avoiding saturation. One embodiment of a method for forming the write pole includes depositing non-magnetic gap material on the write pole and trailing step. An ion beam milling process is used to form a taper in the non-magnetic gap material. The magnetic shield is then deposited on the taper, forming the slanted bump of the shield.Type: ApplicationFiled: September 30, 2009Publication date: March 31, 2011Inventors: Trevor W. Olson, Aron Pentek, Thomas J. A. Roucoux
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Publication number: 20110076393Abstract: Methods for fabrication of magnetic write heads, and more specifically to fabrication of magnetic poles and trailing magnetic pole steps. A write pole may first be patterned on a substrate. Then a side gap material may be patterned along sidewall portions of the write pole. Thereafter, a masking layer may be deposited and patterned to expose a portion of the write pole. A trailing magnetic pole step may be formed on the exposed portion of the write pole.Type: ApplicationFiled: September 30, 2009Publication date: March 31, 2011Inventors: Christian R. Bonhôte, Trevor W. Olson, Aron Pentek, Thomas J. A. Roucoux
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Publication number: 20110077172Abstract: 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: ApplicationFiled: December 1, 2008Publication date: March 31, 2011Applicant: President and Fellows of Harvard CollegeInventors: Joanna Aizenberg, Benjamin Hatton
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Patent number: 7910234Abstract: A magnetic recording tape includes an elongated substrate and a magnetic side. The magnetic side includes a support layer formed over the substrate and a magnetic recording layer formed over the support layer to define a magnetic recording surface opposite the substrate. The magnetic recording layer includes magnetic particles and a lubricant and supports a net uncompressed density of at least 30 MB/in2. The magnetic side has an extracted BET surface area of greater than 1.0 m2/g.Type: GrantFiled: April 28, 2006Date of Patent: March 22, 2011Assignee: Imation Corp.Inventors: Adam A. Brodd, Bruce H. Edwards, Brian D. Brong, David C. Lowery
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Patent number: 7910159Abstract: A radial magnetic field reset apparatus including a housing having a cavity with a soft magnet rod disposed at its center and a permanent magnet disposed around the cavity. The cavity and thickness of the soft magnet rod are sized to permit a cassette of disks to be inserted into the housing with the soft magnet rod disposed within the inner diameter holes of the disks contained in the cassette. The soft magnet rod at the center of the housing attracts the magnetic field generated by the permanent magnet, which results in a substantially uniform, radial magnetic field inside the housing.Type: GrantFiled: June 3, 2005Date of Patent: March 22, 2011Assignee: WD Media, Inc.Inventor: Hong-Sik Jung
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Patent number: 7910160Abstract: A thin-film magnetic head structure has a configuration adapted to manufacture a thin-film magnetic head configured such that a main magnetic pole layer including a magnetic pole end part on a side of a medium-opposing surface opposing a recording medium, a write shield layer opposing the magnetic pole end part so as to form a recording gap layer on the medium-opposing surface side, and a thin-film coil wound about the write shield layer or main magnetic pole layer are laminated. The main magnetic pole layer includes a base magnetic pole part comprising the magnetic pole end part and a base depression distanced farther from the medium-opposing surface than the magnetic pole end part, and an embedded magnetic pole part buried in the base depression and joined to the base magnetic pole part.Type: GrantFiled: July 15, 2008Date of Patent: March 22, 2011Assignee: Headway Technologies, Inc.Inventors: Yoshitaka Sasaki, Hiroyuki Ito, Kazuo Ishizaki, Takehiro Horinaka
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Publication number: 20110064871Abstract: A laminated body which forms a resin mold by compression molding using a master mold, the laminated body having: a pair of mutually facing base materials, a layer of a liquid or gel-like curable resin material sandwiched between the pair of base materials, and one or more flow suppression bodies, which are composed of a cured product of the curable resin material and are sandwiched between the pair of base materials, wherein the layer of the curable resin material is sealed by the pair of base materials and the flow suppression bodies. Also, a method for manufacturing a resin mold using the laminated body.Type: ApplicationFiled: May 22, 2009Publication date: March 17, 2011Applicant: SHOWA DENKO K.K.Inventors: Hiroshi Uchida, Tomokazu Umezawa, Masato Fukushima, Shinsuke Takeyama, Takanori Sakuragi
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Publication number: 20110062236Abstract: A magnetic-guiding laminate is used to improve wireless communication between a transmitter and a receptor disposed on a substrate, regardless of the substrate materials. The laminate can comprise one or more layers of magnetic or non-magnetic material with different magnetic property. For example, the laminate can comprise a paramagnetic layer disposed on a diamagnetic layer, where the paramagnetic layer attracts the magnetic field toward the RFID antenna, and the diamagnetic layer prevents the magnetic field from dispersing in the substrate. Alternatively, the laminate can comprise multiple paramagnetic layers, wherein at least two layers have different magnetic properties, such as different permeability values.Type: ApplicationFiled: September 15, 2010Publication date: March 17, 2011Applicant: KSW MICROTEC AGInventors: Frank Kriebel, Carsten Nieland, Hannes Küllig
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Patent number: 7901805Abstract: A magnetic recording medium, which comprises: a nonmagnetic support; and a magnetic layer comprising a ferromagnetic powder and a binder, wherein an average surface roughness (Ra) at a center of a surface of the magnetic layer measured by using an atomic force microscope (AFM) is 2 nm or less, the maximum height (Rmax) thereof is 50 nm or less, and an arithmetic average of phase difference between a drive signal and a response signal of a probe measured with the atomic force microscope in a tapping mode is from 2 to 20°, and a method of producing the same.Type: GrantFiled: March 30, 2007Date of Patent: March 8, 2011Assignee: FUJIFILM CorporationInventor: Koji Naoe
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Patent number: 7897200Abstract: The present invention provides a ferromagnetic/antiferromagnetic coupling film structure and a fabrication method thereof. The structure includes an antiferromagnetic layer of cobalt oxide having a thickness of 2 to 15 monolayers and formed on a substrate at a temperature ranging from 700K to 900K; and a ferromagnetic layer of cobalt having a thickness of at least one monolayer for being formed on the antiferromagnetic layer of cobalt oxide.Type: GrantFiled: July 31, 2008Date of Patent: March 1, 2011Assignee: National Chung Cheng UniversityInventors: Jyh-Shen Tsay, Chi-Wei Lee, Gung Chern
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Patent number: 7897201Abstract: A method is for manufacturing a magnetoresistance effect element having a magnetization fixed layer, a non-magnetic intermediate layer, and a magnetization free layer being sequentially stacked. The method includes: forming at least a part of a magnetic layer that is to become either one of the magnetization fixed layer and the magnetization free layer; forming a function layer including at least one of an oxide, a nitride, and a fluoride on the part of the magnetic layer; and removing a part of the function layer by exposing the function layer to either one of an ion beam and plasma irradiation.Type: GrantFiled: February 8, 2007Date of Patent: March 1, 2011Assignee: Kabushiki Kaisha ToshibaInventors: Hiromi Yuasa, Hideaki Fukuzawa, Yoshihiko Fuji, Hitoshi Iwasaki
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Publication number: 20110042349Abstract: A method for forming a write pole comprises forming a stop layer over a substrate layer of a wafer, the stop layer having an opening above a damascene trench in the substrate layer, and forming a buffer layer over the stop layer, the buffer layer having an opening above the opening of the stop layer. The method further comprises plating a layer of magnetic material over the wafer, disposing a first sacrificial material over a region of the magnetic material above the damascene trench, performing a milling or etching operation over the wafer to remove the magnetic material not covered by the first sacrificial material and to remove the first sacrificial material, disposing a second sacrificial material over the wafer, and performing a polishing operation over the wafer to remove the region of the magnetic material above the damascene trench, the second sacrificial material, and the buffer layer.Type: ApplicationFiled: August 20, 2009Publication date: February 24, 2011Applicant: Western Digital (Fremont), LLCInventors: Ronghui ZHOU, Ming JIANG, Xiaohai XIANG, Jinwen WANG, Guanghong LUO, Yun-Fei LI