Magnetic Recording Component Or Stock Patents (Class 428/800)
  • Patent number: 10700268
    Abstract: A method of fabricating a magnetoresistive bit from a magnetoresistive stack includes (a) etching through at least a portion of a thickness of the surface region to create a first set of exposed areas in the form of multiple strips extending in a first direction, and (b) etching through at least a portion of a thickness of the surface region to create a second set of exposed areas in the form of multiple strips extending in a second direction. The first set of exposed areas and the second set of exposed areas may have multiple areas that overlap. The method may also include, (c) after the etching in (a) and (b), etching through at least a portion of the thickness of the magnetoresistive stack through the first set and second set of exposed areas.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: June 30, 2020
    Assignee: Everspin Technologies, Inc.
    Inventors: Kerry Joseph Nagel, Sanjeev Aggarwal, Sarin A. Deshpande
  • Patent number: 10629341
    Abstract: A composite permanent magnet comprises a first phase including a magnetically hard material and a second phase including a magnetic material. Each of the materials has an anisotropy value selected such that a ratio of the values falls within a predefined range and a resulting grain size of the magnetic material is greater than a predefined threshold defined by the predefined range.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: April 21, 2020
    Assignee: FORD GLOBAL TECHNOLOGIES, LLC
    Inventor: C Bing Rong
  • Patent number: 10546997
    Abstract: Articles including a fixing layer and a free layer including a layer including an FePd alloy. The free layer may include a composite layer including a perpendicular synthetic antiferromagnetic (p-SAF) structure. Techniques for forming and using articles including FePd alloy layers or p-SAF structures. Example articles and techniques may be usable for storage and logic devices.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: January 28, 2020
    Assignee: Regents of the University of Minnesota
    Inventors: Jian-Ping Wang, Delin Zhang
  • Patent number: 10522739
    Abstract: An embodiment includes an apparatus comprising: a substrate; and a perpendicular magnetic tunnel junction (pMTJ) comprising a fixed layer and first and second free layers; wherein (a) the first free layer includes Cobalt (Co), Iron (Fe), and Boron (B), and (b) the second free layer is epitaxial and includes Manganese (Mn) and Gallium (Ga). Other embodiments are described herein.
    Type: Grant
    Filed: June 26, 2015
    Date of Patent: December 31, 2019
    Assignee: Intel Corporation
    Inventors: Kaan Oguz, Kevin P. O'Brien, Brian S. Doyle, David L. Kencke, Charles C. Kuo, Robert S. Chau
  • Patent number: 10360936
    Abstract: The invention provides a magnetic recording medium with an excellent signal-to-noise ratio during reading by reducing the noise produced during writing of data onto the magnetic recording medium, and increasing the signal level. The assisted magnetic recording medium according to one embodiment comprising a substrate, a base layer, and a magnetic layer composed mainly of an alloy with an L10-type crystal structure, the assisted magnetic recording medium having a pinning layer in contact with the magnetic layer, and the pinning layer including Co or an alloy composed mainly of Co.
    Type: Grant
    Filed: January 31, 2018
    Date of Patent: July 23, 2019
    Assignee: SHOWA DENKO K.K.
    Inventors: Kazuya Niwa, Tetsuya Kanbe, Yuji Murakami, Lei Zhang, Hisato Shibata, Takayuki Fukushima, Satoru Nakajima, Takehiro Yamaguchi
  • Patent number: 10255939
    Abstract: Various aspects of this disclosure provide a recording medium for heat-assisted-magnetic-recording (HAMR). The recording medium may include a substrate. The recording medium may further include a recording layer. The recording medium may also include a thermal control layer between the recording layer and the substrate. The thermal control layer may have a thermal conductivity that increases with increasing temperature.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: April 9, 2019
    Assignee: AGENCY FOR SCIENCE, TECHNOLOGY AND RESEARCH
    Inventors: Jiang Feng Hu, Wen Huei Tsai, Kiat Min Cher, Binni Varghese, Chee Beng Lim, Jian Zhong Shi
  • Patent number: 9984713
    Abstract: An apparatus is disclosed. The apparatus includes a storage layer, a first write layer, and a second write layer. The first write layer is disposed over the storage layer. The second write layer is disposed over the first write layer. The anisotropy field and magnetization associated with the second write layer at writing temperature is greater than anisotropy field and magnetization associated with the first write layer at the writing temperature.
    Type: Grant
    Filed: June 6, 2017
    Date of Patent: May 29, 2018
    Assignee: Seagate Technology LLC
    Inventors: Antonio Javier Zambano, Connie Chunling Liu, Xiaoding Ma, ZhaoHui Fan, Jerry Kueirweei Chour
  • Patent number: 9950980
    Abstract: An object of the present invention is to provide a compound that is resistant to decomposition even when coming into contact with a magnetic head, while enabling a reduced spacing between the magnetic head and a magnetic disk, and to provide a lubricant comprising the compound, and a magnetic disk comprising the compound. The present invention relates to a compound represented by formula (1), a lubricant comprising the compound, and a magnetic disk comprising the compound: C6H6-i—[O—(CH2)n—O—CH2—R—CH2—X]i??(1) wherein n is an integer of 2 to 6; i is an integer of 2 or 3; X is a group represented by —OH, —O—(CH2)m—OH, —OCH2CH(OH)CH2OH, —OCH2CH(OH)CH2O—C6H5, or —OCH2CH(OH)CH2O—C6H4—OCH3; m is an integer of 1 to 6; R is —(CF2)pO(CF2O)x(CF2CF2O)y(CF2CF2CF2O)z(CF2CF2CF2CF2O)w(CF2)p—; x and y are each a real number of 0 to 30; z is a real number of 0 to 30; w is a real number of 0 to 20; and p is an integer of 1 to 3.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: April 24, 2018
    Assignee: Moresco Corporation
    Inventor: Tsuyoshi Shimizu
  • Patent number: 9940961
    Abstract: A perpendicular magnetic recording medium includes a non-magnetic substrate; and a magnetic recording layer that includes magnetic crystal grains and a non-magnetic crystal grain boundary that surrounds the magnetic crystal grains, wherein the magnetic crystal grains contain an ordered alloy and the non-magnetic crystal grain boundary contains Ge oxides. The magnetic recording layer may have a granular structure. The magnetic crystal grains may be micronized to be sufficiently ordered and separated, and the perpendicular magnetic recording medium may have a high magnetic anisotropy constant Ku and high coercivity Hc.
    Type: Grant
    Filed: April 6, 2015
    Date of Patent: April 10, 2018
    Assignee: FUJI ELECTRIC CO., LTD.
    Inventors: Takuya Ono, Takehito Shimatsu
  • Patent number: 9928865
    Abstract: A compound of the formula (1), and lubricant, and magnetic disk each using the same A-O—CH2—Rf—CH2—B??(1) wherein A is a group of the formula (a) below, B is a group of the formula (b) or (c) or (d) below, p is 0, 1 or 2, q is a real number of 2 to 10, R is C1-4 fluoroalkyl, Ar is unsubstituted or substituted aromatic group with C1-30 alkyl or C1-30 alkoxyl, Rf is —CF2CF2O(CF2CF2CF2O)xCF2CF2— or —CF2CF2CF2O(CF2CF2CF2CF2O)yCF2CF2CF2—, x and y are each a real number of 0 to 50.
    Type: Grant
    Filed: September 17, 2014
    Date of Patent: March 27, 2018
    Assignee: MORESCO CORPORATION
    Inventor: Aya Inoue
  • Patent number: 9890186
    Abstract: A method of manufacturing cyclophosphazenes PFPE derivatives to be used in the lubrication of magnetic recording media is herein provided. The method comprises: a) a (per)fluoropolyether (PFPE) polyol [PFPE (Ppol)] comprising a fluoropolyoxyalkylene chain (Rf) having two chain ends, each chain end comprising at least one hydroxy group, and b) the corresponding alkoxide of perfluoropolyether (Ppol) [PFPE (Palk)] wherein the equivalent concentration of PFPE (Palk) in PFPE (Ppol) is lower than 30%, preferably ranging from 5% to 15%; 2) contacting mixture (M) with a perhalocyclophosphazene (CPhalo) to provide a mixture (M1) containing an equivalent ratio of PFPE (Palk)/(CPhalo) of at least 1; 3) allowing mixture (M1) to react until complete disappearance of P—Cl groups to provide a mixture (M2); 4) submitting mixture (M2) to hydrolysis to provide a mixture (M3); 5) optionally removing (Ppol) from mixture (M3) to provide a mixture (M4). A method of purifying mixture (M4) is also herein provided.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: February 13, 2018
    Assignee: SOLVAY SPECIALTY POLYMERS ITALY S.P.A.
    Inventors: Roberto Valsecchi, Rosaldo Picozzi, Pier Antonio Guarda
  • Patent number: 9805755
    Abstract: Provided herein is a lubricant including a compound of Formula I L-(CF2CF2O)n—CF2CH2O—N—OCH2CF2O—(CF2CF2O)m-M??(Formula I) wherein L is selected from the group consisting of M is selected from the group consisting of wherein each instance of R1, R2, and R3 is independently selected from the group consisting of hydroxyl, alkoxyl, carbocycyl, phenyl, heterocycyl, piperonyl, carboxyl, alkylamido, acetamido, carbamoyl, N-alkylcarbamoyl, N,N-dialkylcarbamoyl, 2,3-dihydroxy-1-propoxyl, acryloyl, alkacryloyl, methacryloyl, a substituent of methyl methacrylate, and a substituent of glycidyl ether; and wherein n?1, m?1, and n and m are the same or different.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: October 31, 2017
    Assignee: Seagate Technology LLC
    Inventor: Jiping Yang
  • Patent number: 9653104
    Abstract: Embodiments of the present disclosure provide a method for selective removal of atoms from a substrate. Such a method comprises forming a patterned mask over at least a portion of the surface of the substrate to form a masked portion and an unmasked portion of the surface. In an embodiment, the method comprises exposing the surface to low energy light ions. In a related embodiment the low energy light ions selectively remove atoms from the unmasked portion of the substrate. In some embodiments, the method further comprises removing the mask. In another embodiment, the present disclosure relates to a method of creating a plurality of magnetic domains on a magnetically susceptible substrate. In an embodiment, the present disclosure pertains to a method of forming a magnetic medium.
    Type: Grant
    Filed: November 18, 2013
    Date of Patent: May 16, 2017
    Assignee: UNIVERSITY OF HOUSTON
    Inventors: Dmitri Litvinov, Long Chang
  • Patent number: 9564164
    Abstract: A magnetic data storage medium capable of storing data bits may be configured at least with a magnetic underlayer structure and a recording structure. The recording structure can have at least a first magnetic layer and a second magnetic layer with the first magnetic layer decoupled by being constructed of an alloy of cobalt, platinum, and a platinum group metal element.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: February 7, 2017
    Assignee: Seagate Technology LLC
    Inventors: Jai-Young Kim, Terry Lee Morkved
  • Patent number: 9431038
    Abstract: A method provides a magnetic device having an air-bearing surface (ABS) location. A layer including first and second sublayers is provided. The first sublayer includes the ABS location. The second sublayer recessed from the ABS location such that part of the first sublayer is between the second sublayer and the ABS location. The first sublayer has a rear surface oriented at a nonzero, acute angle from a surface perpendicular to the ABS location. A trench is formed in the layer. The trench has a bottom, a top and sidewalls. The sidewalls form a first angle with a direction perpendicular to the bottom at the ABS location. The sidewalls form a second angle with the direction in part of the second sublayer. The second angle is smaller than the first angle. The sidewall angle varies along the rear surface of the first sublayer. A main pole is provided in the trench.
    Type: Grant
    Filed: June 29, 2015
    Date of Patent: August 30, 2016
    Assignee: WESTERN DIGITAL (FREMONT), LLC
    Inventors: Jinqiu Zhang, Xiaoyu Yang, Feng Liu, Xiaojun Zhang, Krishna Chetry, Masahiro Osugi, Ning Wu
  • Patent number: 9130273
    Abstract: According to an embodiment, a communication apparatus communicates through a living body. One end of a first signal line is connected to the communication unit. A terminal is connected to the other end of the first signal line. One end of a second signal line is connected to the terminal. The second signal line is connected to the first signal line through the terminal. A first signal electrode is connected to the other end of the second signal line. One end of a third signal line is connected to the terminal. The third signal line is connected to the first signal line through the terminal. One end of a magnetic field sensor is connected to the other end of the third signal line. The other end of the magnetic field sensor is connected to a reference potential electrode.
    Type: Grant
    Filed: January 30, 2013
    Date of Patent: September 8, 2015
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kazuki Kataoka, Takafumi Ohishi, Kazuhiro Inoue
  • Patent number: 9079782
    Abstract: A titanium oxide particle that can develop non-conventional and novel physical properties, a method for manufacturing the same, and a magnetic memory, an optical information recording medium, and a charge accumulation type memory using the same are provided. A silica-coated titanium hydroxide compound particle is directly produced through a sol-gel technique and not through a reverse micelle technique, and the silica-coated titanium hydroxide compound particle is subjected to a calcination process. Hence, a titanium oxide particle 1 can be provided which can develop non-conventional and novel physical properties such that it does not perform phase transition at a room temperature and a Ti3O5 particle body can always maintain the characteristic as a paramagnetic metal in all temperature ranges unlike conventional bulk bodies that perform phase transition between a non-magnetic semiconductor and a paramagnetic metal at a temperature near about 460 K.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: July 14, 2015
    Assignee: The University of Tokyo
    Inventors: Shin-ichi Ohkoshi, Hiroko Tokoro, Fumiyoshi Hakoe, Yoshihide Tsunobuchi, Kazuhito Hashimoto
  • Publication number: 20150036240
    Abstract: Systems and methods are illustrated for manufacturing hard disks with double lubrication layers that allow minimization of a HDD head DFH touchdown point while maintaining good tribology performance for HDD reliability. An exemplary hard disk includes a magnetic recording layer, a carbon overcoat, and a double lubrication layer: a bonded lubrication layer and a mobile lubrication layer. The bonded lubrication layer includes a high conformity and high density first lubricant. The mobile layer include a high lubricity lubricant that promotes HDI reliability.
    Type: Application
    Filed: March 4, 2014
    Publication date: February 5, 2015
    Applicant: WD Media, LLC
    Inventors: YASUO SAKANE, KIM THUY THI LAI, SHAUN H. CHEN, BING-SHIUAN CHANG
  • Publication number: 20150017480
    Abstract: A magnetic recording medium includes an amorphous buffer layer, a hybrid layer including a barrier layer, and a texture control layer. The magnetic recording medium also includes a heat sink layer, an under layer, and a perpendicular recording layer.
    Type: Application
    Filed: July 11, 2013
    Publication date: January 15, 2015
    Inventors: Akemi Hirotsune, Ikuko Takekuma, Junichi Sayama
  • Patent number: 8911846
    Abstract: The embodiments disclose a block copolymer assembly structure, including a first pattern and second pattern with a first density of patterned features integrated in data and servo zones, a silicon substrate with thin film layers deposited thereon and patterned using the first density of first pattern and second pattern features and a template fabrication pattern with a second density greater than the first density created using ordered block copolymer periodic structures across a portion of the substrate.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: December 16, 2014
    Assignee: Seagate Technology LLC
    Inventors: XiaoMin Yang, Kim Yang Lee, HongYing Wang
  • Publication number: 20140287265
    Abstract: According to one embodiment, a magnetic recording medium including a substrate and a magnetic recording layer formed on the substrate and including a plurality of projections is obtained. The array of the plurality of projections includes a plurality of domains in which the projections are regularly arranged, and a boundary region between the domains, in which the projections are irregularly arranged. The boundary region is formed along a perpendicular bisector of a line connecting the barycenters of adjacent projections.
    Type: Application
    Filed: July 12, 2013
    Publication date: September 25, 2014
    Inventors: Kaori Kimura, Kazutaka Takizawa, Akira Watanabe, Takeshi Iwasaki, Akihiko Takeo
  • Publication number: 20140287266
    Abstract: According to exemplary embodiments, a pattern forming method includes: forming a diblock copolymer coating film by applying coating liquid containing a diblock copolymer including a chain of a first polymer and a chain of a second polymer which is not compatible with the first polymer, and a homopolymer having affinity with the first polymer, on a substrate, and drying the liquid; and performing phase separation of the first polymer and the second polymer by providing a coating film for solvent annealing using a solvent having compatibility with the second polymer.
    Type: Application
    Filed: September 3, 2013
    Publication date: September 25, 2014
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Akira WATANABE, Kazutaka TAKIZAWA, Kaori KIMURA
  • Publication number: 20140272470
    Abstract: Apparatus for recording data and method for making the same. In accordance with some embodiments, a magnetic layer is supported by a substrate and comprises a magnetic magnetic material, a non-magnetic material, and an energy assisted segregation material. The segregation material enhances segregation of the non-magnetic material into grain boundaries within the layer at an elevated, moderate energy level.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Chun Wang, Connie Liu, Thomas P. Nolan, Kueir-Weei Chour
  • Publication number: 20140272469
    Abstract: The present disclosure relates to a method for fabricating an ion-implanted bit-patterned medium. The method includes providing a medium, the medium having a magnetic layer and a substrate and the magnetic layer includes migrating components. The method further includes forming a patterned mask layer on the surface of the magnetic layer and then ion-implanting the medium through the patterned mask layer, wherein the exposed portions of the magnetic layer comprise trench regions, the covered portions of the magnetic layer comprise island regions, and the transition areas between the trench regions and the island regions comprise boundary regions, wherein the island regions have more favorable magnetic properties than the trench regions. The method also includes annealing the medium, wherein the migrating components diffuse from inside the island regions towards the trench regions.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Applicant: HGST NETHERLANDS B.V.
    Inventors: Olav Hellwig, Kurt A. Rubin, Qing Zhu
  • Publication number: 20140247520
    Abstract: According to one embodiment, a magnetic storage medium includes a plurality of recording layers and a first non-magnetic layer. The plurality of recording layers each includes at least one first magnetic layer and at least one second magnetic layer. The first magnetic layer is made of a first magnetic material which has a first effective perpendicular magnetic anisotropy. Data is stored in first magnetic layer in accordance with a direction of magnetization. The second magnetic layer is made of a second magnetic material having a second effective perpendicular magnetic anisotropy smaller than the first effective perpendicular magnetic anisotropy. First magnetization of the first magnetic layer and second magnetization of the second magnetic layer are in magnetic coupling.
    Type: Application
    Filed: December 12, 2013
    Publication date: September 4, 2014
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Tao YANG, Hirofumi Suto, Juwany Kudo, Tazumi Nagasawa, Rie Sato, Koichi Mizushima
  • Publication number: 20140212690
    Abstract: Aspects include recording media with enhanced areal density through reduction of head media spacing, head keeper spacing, or head to soft underlayer spacing. Such aspects comprise replacing currently non-magnetic components of devices, such as interlayers and overcoats with components and compositions comprising magnetic materials. Other aspects relate to magnetic seed layers deposited within a recording medium. Preferably, these aspects, embodied as methods, systems and/or components thereof reduce effective magnetic spacing without sacrificing physical spacing.
    Type: Application
    Filed: January 22, 2014
    Publication date: July 31, 2014
    Applicant: Seagate Technology LLC
    Inventors: Kaizhong Gao, Bin Lu, Bogdan Florin Valcu, Xiaoding Ma
  • Patent number: 8771846
    Abstract: An intermetallic or iron aluminide magnetically readable medium and a method of forming and reading the same are provided herein. Also provided is an identification card or tag, a key, an anti-counterfeiting measure, an anti-forging measure. The intermetallic or iron aluminide magnetically readable medium includes a magnetically readable surface, wherein the magnetically readable surface contains one or more first magnetically readable regions of the intermetallic or iron aluminide surrounded by one or more second magnetically readable regions. Additionally, the intermetallic or iron aluminide magnetically readable medium can be coated, encapsulated or concealed within a material.
    Type: Grant
    Filed: May 23, 2006
    Date of Patent: July 8, 2014
    Assignee: Philip Morris USA Inc.
    Inventors: Seetharama C. Deevi, Kudumboor V. Rao, Valter Ström, Ziyan Gu
  • Patent number: 8747628
    Abstract: A method according to one embodiment includes forming a high Ku first oxide magnetic layer above a substrate by sputtering; forming a low Ku second oxide magnetic layer above the first oxide magnetic layer by sputtering; forming an exchange coupling layer of CoCrPt-oxide above the second oxide magnetic layer; and forming a magnetic cap layer above the exchange coupling layer. Additional systems and methods are also presented.
    Type: Grant
    Filed: April 3, 2012
    Date of Patent: June 10, 2014
    Assignee: HGST Netherlands B.V.
    Inventors: Xiaoping Bian, Jack Jyh-Kau Chang, Qing Dai, Hoa V. Do, Yoshihiro Ikeda, Kentaro Takano, Chu S. Tran
  • Publication number: 20140147699
    Abstract: A lubricant containing a compound (A) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a polar group at each of opposite terminals thereof, and a compound (B) comprising a perfluoropolyether having a main-chain structure of the formula (1) and having a nonpolar group at at least one terminal thereof —(CF2CF2CF2O)a-??(1) wherein a is a real number of 5 to 30.
    Type: Application
    Filed: January 30, 2014
    Publication date: May 29, 2014
    Applicant: MORESCO Corporation
    Inventor: Nagayoshi KOBAYASHI
  • Publication number: 20140112114
    Abstract: A magnetic recording medium includes a substrate and a magnetic recording layer formed on the substrate. The magnetic recording layer includes a recording region on which a magnetic material is formed as a bit pattern, and a spacing layer which fills a peripheral area of the recording region with a non-magnetic material with relatively higher thermal conductivity than that of the magnetic material.
    Type: Application
    Filed: October 23, 2013
    Publication date: April 24, 2014
    Applicant: HITACHI, LTD.
    Inventors: Junko USHIYAMA, Harukazu MIYAMOTO, Fumiko AKAGI
  • Patent number: 8697263
    Abstract: A sheet includes a pulp fiber and a linear magnetic material. The linear magnetic material has a substantially large Barkhausen effect. The linear magnetic material also has irregularities at an outer periphery of the linear magnetic material. The sheet in which the magnetic material is inhibited from being exposed at both surfaces of the sheet can be provided.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: April 15, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Eizo Kurihara, Katsumi Sakamaki, Mario Fuse, Shoji Yamaguchi
  • Publication number: 20140093745
    Abstract: The embodiments disclose a dual-layer magnetic recording structure including a top magnetic layer etched to remove patterned portions of the top magnetic layer and a bottom magnetic layer including portions with altered magnetic properties of molecules to reduce net magnetic moments and including portions of unaltered magnetic properties exchange-coupled through the top magnetic layer.
    Type: Application
    Filed: September 28, 2012
    Publication date: April 3, 2014
    Applicant: SEAGATE TECHNOLOGY, LCC
    Inventor: Zhaohui Fan
  • Publication number: 20140085747
    Abstract: There is provided a base plate including: a base body; and a component receiving part penetrating through the base body so as to receive a circuit component mounted on a substrate therein at the time of coupling the substrate and the base body, wherein the component receiving part includes a step part formed in an outer edge thereof so that a sealing member is seated on the step part to seal the component receiving part.
    Type: Application
    Filed: December 20, 2012
    Publication date: March 27, 2014
    Applicant: SAMSUNG ELECTRO-MECHANICS CO., LTD.
    Inventor: Hyun Chul LEE
  • Publication number: 20140072830
    Abstract: The disclosure relates generally to a method for fabricating a patterned medium. The method includes providing a substrate with an exterior layer under a lithographically patterned surface layer, the lithographically patterned surface layer comprising a first pattern in a first region and a second pattern in a second region, applying a first masking material over the first region, transferring the second pattern into the exterior layer in the second region, forming self-assembled block copolymer structures over the lithographically patterned surface layer, the self-assembled block copolymer structures aligning with the first pattern in the first region, applying a second masking material over the second region, transferring the polymer block pattern into the exterior layer in the first region, and etching the substrate according to the second pattern transferred to the exterior layer in the second region and the polymer block pattern transferred to the exterior layer in the first region.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 13, 2014
    Inventors: Jeffrey S. Lille, Kurt A. Rubin, Ricardo Ruiz, Lei Wan
  • Publication number: 20140065443
    Abstract: A compound of the formula (1), lubricant containing the compound and magnetic disk (P3N3)—[R1-R2]6??(1) wherein R1 is —OCH2CF2O(CF2CF2O)x(CF2O)yCF2CH2O—, or —OCH2CF2CF2O(CF2CF2CF2O)ZCF2CH2O— or —OCH2CF2CF2CF2O(CF2CF2CF2CF2O)nCF2CF2CF2CH2O—, x and y are each an integer of 0 to 15, z is an integer of 1 to 15, n is an integer of 0 to 20, R2 is hydrogen, hydroxyalkyl, amino or amido.
    Type: Application
    Filed: July 24, 2013
    Publication date: March 6, 2014
    Applicant: MORESCO Corporation
    Inventors: Ryosuke SAGATA, Nagayoshi KOBAYASHI
  • Publication number: 20140030551
    Abstract: In various embodiments, a recording medium may be provided. The recording medium may include a servo layer. The recording medium may further include a data recording layer. The recording medium may additionally include a crystal-like soft underlayer (SUL). The data recording layer and the servo layer may be on a same side of the crystal-like soft underlayer.
    Type: Application
    Filed: July 19, 2013
    Publication date: January 30, 2014
    Applicant: Agency for Science, Technology and Research
    Inventors: Jianzhong SHI, Wee Kiat LIM
  • Patent number: 8632896
    Abstract: An aspect of the present invention relates to a radiation-curable vinyl chloride copolymer, which comprises a structural unit denoted by general formula (1): wherein, in general formula (1), R1 denotes a hydrogen atom or a methyl group, and L1 denotes a divalent linking group denoted by formula (2), formula (3), or general formula (4): wherein, in general formula (4), R41 denotes a hydrogen atom or a methyl group.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: January 21, 2014
    Assignee: FUJIFILM Corporation
    Inventor: Katsumi Araki
  • Publication number: 20140004386
    Abstract: An apparatus can be generally directed to a magnetic stack having a magnetically free layer positioned on an air bearing surface (ABS). The magnetically free layer can be biased to a predetermined magnetization in various embodiments by a biasing structure that is coupled with the magnetically free layer and positioned distal the ABS.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Mark William Covington, Dimitar Velikov Dimitrov, Dian Song
  • Patent number: 8609261
    Abstract: There are provided titanium oxide particles capable of manifesting an unprecedented property, a manufacturing method thereof and a magnetic memory as well as a charge storage type memory employing the titanium oxide particles. Unlike-conventional bulk bodies phase-transited between nonmagnetic semiconductors and paramagnetic metals around about 460K, provided are titanium oxide particles 3 capable of manifesting an unprecedented property that Ti3O5 particles do not undergo phase transitions at room temperature and allow a paramagnetic metal property thereof to be consistently maintained in any temperature range.
    Type: Grant
    Filed: November 26, 2009
    Date of Patent: December 17, 2013
    Assignee: The University of Tokyo
    Inventors: Shin-ichi Ohkoshi, Tomoyuki Matsuda, Yoshihide Tsunobuchi, Kazuhito Hashimoto, Hiroko Tokoro
  • Patent number: 8586703
    Abstract: A compound comprising a backbone with a perfluoropolyether chain. The compound also has one or more cyclophosphazene rings attached to or incorporated into the backbone. The compound further includes at least two functional groups attached to the backbone, attached to the one or more cyclophosphazene rings, or a combination thereof.
    Type: Grant
    Filed: June 23, 2008
    Date of Patent: November 19, 2013
    Assignee: Seagate Technology LLC
    Inventors: Jiping Yang, Michael Joseph Stirniman, Xiaoding Ma, Jing Gui
  • Patent number: 8580408
    Abstract: An apparatus for moving a magnetic domain wall and a memory device using a magnetic field application unit are provided. The apparatus for moving a magnetic domain wall includes a magnetic layer having a plurality of magnetic domains; current supply units that are disposed on both sides of the magnetic layer and supply current to the magnetic layer; and a magnetic field application unit that is disposed on at least one surface of the magnetic layer and applies a magnetic field to the magnetic layer.
    Type: Grant
    Filed: November 28, 2007
    Date of Patent: November 12, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Yong-su Kim, Sung-chul Lee
  • Publication number: 20130280555
    Abstract: A magnetic disk according to one embodiment of the present invention includes a base material and a lubricant layer provided on or over a base material. The lubricant layer contains a rod-like ionic liquid crystal compound having a cation group and an anion group.
    Type: Application
    Filed: April 18, 2013
    Publication date: October 24, 2013
    Applicants: Samsung Electro-Mechanics Japan Advanced Technology Co., Ltd., UNIVERSITY OF YAMANASHI
    Inventors: Yuichiro HARAMOTO, Mitsuo KODAMA
  • Patent number: 8563146
    Abstract: A method for fabricating a magnetic transducer having an air-bearing surface (ABS). An underlayer having a first and second regions and a bevel connecting these regions is provided. The first region is thicker and closer to the ABS than the second region. An intermediate layer conformal with the underlayer is provided. A hard mask layer having a top surface perpendicular to the ABS is formed on the intermediate layer. Part of the hard mask and intermediate layers are removed to provide a trench. The trench has a bottom surface and sidewalls having a first angle between the bottom surface and the intermediate layer and a second angle corresponding to the hard mask layer. A pole is provided in the trench. The pole has a pole tip, a yoke distal, and a bottom bevel. At least the yoke includes sidewalls having sidewall angles corresponding to the first and second angles.
    Type: Grant
    Filed: June 27, 2011
    Date of Patent: October 22, 2013
    Assignee: Western Digital (Fremont), LLC
    Inventors: Jinqiu Zhang, Ying Hong, Hai Sun, Hongping Yuan, Guanghong Luo, Xiaoyu Yang, Hongmei Han, Lingyun Miao
  • Publication number: 20130258518
    Abstract: According to one embodiment, a patterned medium is disclosed herein. The patterned medium includes a patterned layer, a stop layer, and a fill layer. The patterned layer includes plurality of grooves. The stop layer is positioned on the patterned layer. The stop layer is at least partially positioned within the plurality of grooves and a portion of the stop layer may be positioned on walls of the grooves of the patterned layer. The fill layer is at least partially positioned within the grooves between portions of the stop layer. The stop layer substantially separates the fill layer from the patterned layer.
    Type: Application
    Filed: March 30, 2012
    Publication date: October 3, 2013
    Inventor: Kurt A. Rubin
  • Publication number: 20130252030
    Abstract: Disclosed is a magnetoelectric (ME) composite including both a piezoelectric material and a magnetostrictive material, wherein a piezoelectric single crystal material having high piezoelectric properties is used as the piezoelectric material, and a metal magnetostrictive material having high magnetostrictive properties is used as the magnetostrictive material, thus achieving an ME composite having a layered structure via adhesion. When the ME layered composite is manufactured such that a <011> crystal orientation of the piezoelectric single crystal material is set to a thickness direction, high ME voltage coefficient, which is at least doubled, compared to a conventional <001> crystal orientation, can be obtained, and such an effect is further maximized in the resonance of the composite.
    Type: Application
    Filed: March 21, 2013
    Publication date: September 26, 2013
    Applicant: KOREA INSTITUTE OF MACHINERY AND MATERIALS
    Inventors: Jungho Ryu, Jong-Woo Kim, Woon-Ha Yoon, Dong-Soo Park
  • Publication number: 20130252029
    Abstract: In a removing step, a phase-separated release solution including a first phase containing a first solvent capable of dissolving a release layer and a second phase containing a second solvent having a property of separating from the first solvent is prepared, and a patterned magnetic recording medium is dipped in the first phase together with a release layer, mask layer, and resist layer remaining on a magnetic recording layer, thereby removing the release layer. After that, the patterned magnetic recording medium is moved to the second phase, and separated from the first phase containing the release layer and the layers remaining on the release layer.
    Type: Application
    Filed: August 30, 2012
    Publication date: September 26, 2013
    Applicant: Kabushiki Kaisha Toshiba
    Inventors: Kazutaka Takizawa, Akira Watanabe, Kaori Kimura, Akihiko Takeo
  • Patent number: 8535816
    Abstract: There are provided a fine structural body capable of manifesting an unprecedented property; a manufacturing method thereof; and a magnetic memory, a charge storage memory and an optical information recording medium employing such fine structural body. Unlike conventional bulk bodies phase-transited between nonmagnetic semiconductors and paramagnetic metals around about 460K, there can be provided a fine structural body 1 comprised of Ti3O5, but capable of manifesting an unprecedented property in which a paramagnetic metal property thereof is consistently maintained in all temperature ranges without undergoing phase transition to a nonmagnetic semiconductor.
    Type: Grant
    Filed: July 13, 2009
    Date of Patent: September 17, 2013
    Assignee: The University of Tokyo
    Inventors: Shin-ichi Ohkoshi, Yoshihide Tsunobuchi, Hiroko Tokoro, Fumiyoshi Hakoe, Kazuhito Hashimoto
  • Patent number: 8507112
    Abstract: Provided is a data recording medium having improved data recording/storage characteristics and with an improved structure to have a higher data storage capacity, and a method of recording and/or easing data using the same. The data recording medium may include a Cu electrode layer on a substrate, and a data recording layer formed of a compound including a metal and at least one non-metal selected from the group consisting of S, Se, and Te, on the Cu electrode layer. Data is recordable to or erasable from the data recording layer by changing the resistance of the data recording layer by diffusing Cu ions from the Cu electrode layer to the data recording layer or by erasing Cu ions from the data recording layer by diffusing Cu ions from the data recording layer back to the Cu electrode layer, according to a voltage pulse applied to the data recording layer.
    Type: Grant
    Filed: November 20, 2007
    Date of Patent: August 13, 2013
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jung-hyun Lee, Sang-jun Choi, Hyung-jin Bae, Young-ju Kim
  • Publication number: 20130201805
    Abstract: An apparatus includes a magnetic recording layer and a thermally active material adjacent to and/or embedded in the magnetic recording layer, wherein the thermally active material has a thermal property that changes when the temperature of the thermally active material changes, or undergoes a phase transition in a predetermined temperature range, to reduce a peak temperature or increase a thermal gradient of a heated portion of the magnetic recording layer.
    Type: Application
    Filed: February 2, 2012
    Publication date: August 8, 2013
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventors: Michael Allen Seigler, William Challener
  • Patent number: 8475669
    Abstract: A system, method, and apparatus for forming a high quality master pattern for patterned media, including features to support servo patterns, is disclosed. Block copolymer self-assembly is used to facilitate the formation of a track pattern with narrower tracks. E-beam lithography forms a chemical contrast pattern of concentric rings, where the spacing of the rings is equal to an integral multiple of the target track pitch. The rings include regions within each servo sector header where the rings are offset radially by a fraction of a track pitch. Self-assembly is performed to form a new ring pattern at the target track pitch on top of the chemical contrast pattern, including the radial offsets in the servo sector headers. When this pattern is transferred to disks via nanoimprinting and etching, it creates tracks separated by nonmagnetic grooves, with the grooves and tracks including the radial offset regions.
    Type: Grant
    Filed: December 30, 2008
    Date of Patent: July 2, 2013
    Assignee: HGST Netherlands B.V.
    Inventors: Thomas Robert Albrecht, Bruno Marchon, Ricardo Ruiz