Applying Superposed Diverse Coating Or Coating A Coated Base Patents (Class 427/131)
  • Patent number: 10325623
    Abstract: The magnetic tape device includes: a magnetic tape; and a reproducing head, in which a magnetic tape transportation speed of the magnetic tape device is equal to or lower than 18 m/sec, the reproducing head is a magnetic head including a tunnel magnetoresistance effect type element as a reproducing element, the magnetic tape includes a non-magnetic support, and a magnetic layer including ferromagnetic powder and a binding agent on the non-magnetic support, and a coefficient of friction measured regarding a base portion of a surface of the magnetic layer is equal to or smaller than 0.30.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: June 18, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Norihito Kasada, Eiki Ozawa, Tetsuya Kaneko
  • Patent number: 10310182
    Abstract: The embodiments disclose a stack feature of a stack configured to confine optical fields within and to a patterned plasmonic underlayer in the stack configured to guide light from a light source to regulate optical coupling.
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: June 4, 2019
    Assignee: Seagate Technology LLC
    Inventors: Ganping Ju, Chubing Peng, Xiaobin Zhu, Yingguo Peng, Yukiko Kubota, Timothy J Klemmer, Jan-Ulrich Thiele, Michael A. Seigler, Werner Scholz, Kim Y. Lee, David S. Kuo, Koichi Wago
  • Patent number: 10304665
    Abstract: A reactor for plasma-assisted chemical vapor deposition includes a plasma duct for containing one or more substrates to be coated by ions; an arc discharge generation system for generating a flow of electrons through the plasma duct from a proximal end toward a distal end of the plasma duct; a gas inlet coupled to the distal end for receiving a reactive gas; a gas outlet coupled to the proximal end for removing at least a portion of the reactive gas to generate a flow of the reactive gas through the plasma duct from the distal end toward the proximal end, to generate the ions from collisions between the electrons and the reactive gas; and a separating baffle positioned for restricting flow of the reactive gas out of the plasma duct to maintain a high pressure in the plasma duct to increase rate of deposition of the ions onto the substrates.
    Type: Grant
    Filed: February 18, 2016
    Date of Patent: May 28, 2019
    Assignee: Nano-Product Engineering, LLC
    Inventor: Vladimir Gorokhovsky
  • Patent number: 10012944
    Abstract: A method for producing a cleaning blade including at least a strip-shaped elastic blade, the method including: (1) a step of producing an elastic blade preform formed of a polyurethane rubber; (2) a step of impregnating at least a part, which is to contact an image bearer, of the elastic blade preform with an ultraviolet-curable composition including a (meth)acrylate compound; (3) a step of immersing the part impregnated of the elastic blade preform in a washing solvent to remove the ultraviolet-curable composition including the (meth)acrylate compound remaining on a surface of the impregnated part; and (4) a step of curing the ultraviolet-curable composition including the (meth)acrylate compound that has impregnated the elastic blade preform to produce an elastic blade.
    Type: Grant
    Filed: March 24, 2015
    Date of Patent: July 3, 2018
    Assignee: RICOH COMPANY, LTD.
    Inventors: Kaori Toyama, Shinji Nohsho, Masanobu Gondoh, Shohei Gohda, Masahiro Ohmori, Yohta Sakon, Hiromi Sakaguchi
  • Patent number: 9822441
    Abstract: A heat-assisted magnetic recording (HAMR) media stack is provided in which Iridium (Ir)-based materials may be utilized as a secondary underlayer instead of a Magnesium Oxide (MgO) underlayer utilized in conventional media stacks. Such Ir-based materials may include, e.g., pure Ir, Ir-based alloys, Ir-based compounds, as well as a granular Ir layer with segregants. The use of Ir or Ir-based materials as an underlayer provide advantages over the use of MgO as an underlayer. For example, DC sputtering can be utilized to deposit the layers of the media stack, where the deposition rate of Ir is considerably higher than that of MgO resulting in higher manufacturing production yields. Further still, less particles are generated during Ir-based layer deposition processes, and Ir-based underlayer can act as a better heat sink. Further still, the morphology and structure of a recording layer deposited on an Ir-based layer can be better controlled.
    Type: Grant
    Filed: March 31, 2015
    Date of Patent: November 21, 2017
    Assignee: WD Media, LLC
    Inventors: Jiaxing Liu, Tomoko Seki, Antony Ajan, Rui Zhang
  • Patent number: 9663700
    Abstract: A treatment fluid comprises: a base fluid; and at least one additive, wherein the additive: (i) comprises a fluorinated compound; and (ii) is a lubricant that is surface active. The additive can reduce the coefficient of friction between two or more surfaces. The surfaces can be the surface of a wellbore component. The additive can also be a corrosion inhibitor. A method of treating a portion of a well comprises: forming the treatment fluid; and introducing the treatment fluid into the well.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: May 30, 2017
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Kay A. Morris, Jay P. Deville, Greg P. Perez
  • Patent number: 9653178
    Abstract: A storage device, a memory, and a method for controlling a storage device, where the storage device includes a comb-shaped magnetic track, a first drive circuit, a second drive circuit, a first drive port, and a second drive port, where the comb-shaped magnetic track includes a first storage area, a second storage area, and a comb handle, and the first storage area and the second storage area include more than two memory bars.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: May 16, 2017
    Assignee: Huawei Technologies Co., Ltd.
    Inventors: Yinyin Lin, Zhulin Wei, Junfeng Zhao, Wei Yang, Yarong Fu, Kai Yang
  • Patent number: 9263251
    Abstract: An oxide film capable of suppressing reflection of a lens is formed under a low temperature. A method of manufacturing a semiconductor device includes forming a metal-containing oxide film on a substrate by performing a cycle a predetermined number of times, the cycle comprising: (a) supplying a metal-containing source to the substrate; (b) supplying an oxidizing source to the substrate; and (c) supplying a catalyst to the substrate.
    Type: Grant
    Filed: April 7, 2015
    Date of Patent: February 16, 2016
    Assignee: HITACHI KOKUSAI ELECTRIC INC.
    Inventors: Norikazu Mizuno, Tomohide Kato, Takaaki Noda
  • Patent number: 9147408
    Abstract: Systems and methods are provided for manufacturing a magnetic recording sensor for use in a magnetic reader, such as a tunneling magnetoresistance (TMR) readers. The magnetic recording sensor can be manufactured by heating a substrate in a first chamber and depositing an antiferromagnetic (AFM) layer on the heated substrate. Additionally, a first pinned layer is added onto the AFM layer, and the substrate is subsequently cooled.
    Type: Grant
    Filed: March 17, 2014
    Date of Patent: September 29, 2015
    Assignee: Western Digital (Fremont), LLC
    Inventors: Yuankai Zheng, Qunwen Leng, Tong Zhao, Christian Kaiser, Zhitao Diao, Xin Jiang
  • Patent number: 9053924
    Abstract: A cleaning agent for a silicon wafer (a first cleaning agent) contains at least a water-based cleaning liquid and a water-repellent cleaning liquid for providing at least a recessed portion of an uneven pattern with water repellency during a cleaning process. The water-based cleaning liquid is a liquid in which a water-repellent compound having a reactive moiety chemically bondable to Si element in the silicon wafer and a hydrophobic group, and an organic solvent including at least an alcoholic solvent are mixed and contained. With this cleaning agent, the cleaning process which tends to induce a pattern collapse can be improved.
    Type: Grant
    Filed: October 5, 2010
    Date of Patent: June 9, 2015
    Assignee: Central Glass Company, Limited
    Inventors: Soichi Kumon, Takashi Saio, Shinobu Arata, Hidehisa Nanai, Yoshinori Akamatsu, Shigeo Hamaguchi, Kazuhiko Maeda
  • Patent number: 9040407
    Abstract: A method including depositing an alloying layer along a sidewall of an opening and in direct contact with a seed layer, the alloying layer includes a crystalline structure that cannot serve as a seed for plating a conductive material, exposing the opening to an electroplating solution including the conductive material, the conductive material is not present in the alloying layer, applying an electrical potential to a cathode causing the conductive material to deposit from the electroplating solution onto the cathode exposed at the bottom of the opening and causing the opening to fill with the conductive material, the cathode includes an exposed portion of the seed layer and excludes the alloying layer, and forming a first intermetallic compound along an intersection between the alloying layer and the conductive material, the first intermetallic compound is formed as a precipitate within a solid solution of the alloying layer and the conductive material.
    Type: Grant
    Filed: October 1, 2013
    Date of Patent: May 26, 2015
    Assignee: International Business Machines Corporation
    Inventors: Mukta G. Farooq, John A. Fitzsimmons, Troy L. Graves-Abe
  • Publication number: 20150138938
    Abstract: 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: Application
    Filed: March 5, 2014
    Publication date: May 21, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hironori Teguri, Kazutaka Takizawa
  • Publication number: 20150131179
    Abstract: A magnetic head according to one embodiment includes an underlayer, a first nonmagnetic spacer layer above the underlayer, a free layer above the first nonmagnetic spacer layer, a second nonmagnetic spacer layer above the free layer, and a cap layer above the second nonmagnetic spacer layer. At least one of the cap layer and the underlayer comprises a soft ferromagnetic material and a high spin orbit coupling material. Other embodiments are also described.
    Type: Application
    Filed: November 12, 2013
    Publication date: May 14, 2015
    Applicant: HGST Netherlands B.V.
    Inventors: Patrick M. Braganca, Jeffrey R. Childress, John C. Read
  • Publication number: 20150131371
    Abstract: 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: Application
    Filed: May 20, 2014
    Publication date: May 14, 2015
    Applicants: Samsung Electronics Co., Ltd., Sungkyunkwan University Foundation for Corporate Collaboration
    Inventors: Hwansoo SUH, Insu JEON, Min-woo KIM, Young-jae SONG, Min WANG, Qinke WU, Sung-joo LEE, Sung-kyu JANG, Seong-jun JUNG
  • Publication number: 20150125598
    Abstract: 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.
    Type: Application
    Filed: April 2, 2013
    Publication date: May 7, 2015
    Inventors: Gen Ishida, Nobuaki Mukai, Takahiro Yoshida
  • Publication number: 20150111061
    Abstract: 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: Application
    Filed: October 22, 2013
    Publication date: April 23, 2015
    Inventor: Mo-How Herman Shen
  • Publication number: 20150109702
    Abstract: A tunnel magnetoresistance (TMR) read sensor having a tabbed AFM layer and an extended pinned layer and methods for making the same are provided. The TMR read sensor has an AFM layer recessed from the air bearing surface, providing a reduced shield-to-shield distance.
    Type: Application
    Filed: March 31, 2014
    Publication date: April 23, 2015
    Applicant: Western Digital (Fremont), LLC
    Inventors: SHAOPING LI, YUANKAI ZHENG, GERARDO A. BERTERO, QUNWEN LENG, MICHAEL L. MALLARY, RONGFU XIAO, MING MAO, ZHIHONG ZHANG, ANUP G. ROY, CHEN JUNG CHIEN, ZHITAO DIAO, LING WANG
  • Publication number: 20150111062
    Abstract: 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: Application
    Filed: October 22, 2013
    Publication date: April 23, 2015
    Inventor: Mo-How Herman Shen
  • Patent number: 8993134
    Abstract: A perpendicular magnetic recording medium, comprising: a substrate; a buffer layer deposited in a first orientation on top of the substrate; an underlayer deposited in a second orientation on top of the buffer layer, the underlayer comprising an electrically conductive oxide; and a magnetic recording layer deposited on top of the underlayer and having an axis of magnetic anisotropy substantially perpendicular to the surface thereof.
    Type: Grant
    Filed: June 29, 2012
    Date of Patent: March 31, 2015
    Assignee: Western Digital Technologies, Inc.
    Inventors: Bollapragada Varaprasad, Yukiko Takahashi, Kazuhiro Hono, Antony Ajan, Hua Yuan, Alexander S. Chernyshov
  • Patent number: 8980449
    Abstract: A magnetic recording medium includes a nonmagnetic substrate provided on which are, in the order recited; an underlayer; a magnetic layer; a protective layer comprised of carbon; and a lubricating layer composed of a lubricant mixture composed of a lubricant represented by Formula (I) below where m is an integer equal to or greater than 1, and R1 and R2 are divalent straight chains consisting of both —CH2 CF2 — or both —CH2 CF2CF2—; and a lubricant represented by Formula (II) below where p and q are integers equal to or greater than 0, provided that p =q =0 is excluded. A method of manufacturing the magnetic recording medium is likewise disclosed.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: March 17, 2015
    Assignee: Fuji Electric Co., Ltd.
    Inventors: Takako Matsumoto, Takeshi Watanabe
  • Publication number: 20150072071
    Abstract: 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: Application
    Filed: January 27, 2014
    Publication date: March 12, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kaori KIMURA, Kazutaka Takizawa, Akira Fujimoto
  • Publication number: 20150069014
    Abstract: 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, Au, Ag, Pd, Cu, Pt and oxides thereof, a viscosity modifier, and a solvent for adjusting mixing of the viscosity modifier and the fine particles having the protective group to form a fine particle layer on the substrate or mask layer.
    Type: Application
    Filed: July 7, 2014
    Publication date: March 12, 2015
    Applicant: KABUSHIKI KAISHA TOSHIBA
    Inventors: Kaori KIMURA, Kazutaka TAKIZAWA, Akira FUJIMOTO
  • Publication number: 20150064347
    Abstract: 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: Application
    Filed: April 2, 2013
    Publication date: March 5, 2015
    Applicant: Toyo Kohan Co., Ltd.
    Inventors: Gen Ishida, Nobuaki Mukai, Takahiro Yoshida
  • Publication number: 20150063086
    Abstract: A device having an air bearing surface and a method of forming the device are disclosed. The device can include a writer portion including a surface at the air bearing surface of the device, a magnetic adhesion layer disposed proximate at least a portion of the surface of the writer portion, and an overcoat disposed proximate at least a portion of the magnetic adhesion layer such that the magnetic adhesion layer is between the at least a portion of the surface of the writer portion and the overcoat.
    Type: Application
    Filed: August 28, 2013
    Publication date: March 5, 2015
    Applicant: SEAGATE TECHNOLOGY LLC
    Inventor: Kurt W. Wierman
  • Patent number: 8968874
    Abstract: 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: Grant
    Filed: October 23, 2013
    Date of Patent: March 3, 2015
    Assignee: Luminex Corporation
    Inventors: Don J. Chandler, Jason Bedre
  • Publication number: 20150050491
    Abstract: The invention relates to a method for producing a spinel iron oxide layer. textured according to a preferred crystal orientation along the [111] direction, with the spinel iron oxide layer being a ferrite layer or a doped ferrite layer, characterised in that it comprises: producing a bottom layer of titanium (Ti) or titanium oxide (TiOx), with the thickness of the bottom layer being greater than or equal to eight nanometres; producing a spinel iron oxide layer on the bottom layer produced beforehand. It also relates to a device comprising a layer of textured ferrite.
    Type: Application
    Filed: August 14, 2014
    Publication date: February 19, 2015
    Applicant: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENE ALT
    Inventors: Xavier Zucchi, Marc Guillaumont
  • Publication number: 20150049400
    Abstract: The present disclosure provides for a magnetic writer pole for use in a hard drive. The magnetic writer pole comprises a first bevel formed by a non-magnetic layer, the first bevel formed at a first angle and extending to a first throat height. The magnetic writer pole further comprises a second bevel formed by the non-magnetic layer and extending distally from the first bevel at a second angle that is greater than the first angle and extending to a second throat height. The magnetic writer pole further comprises a third bevel formed by the non-magnetic layer and extending distally from the second bevel at a third angle that is greater than the second angle.
    Type: Application
    Filed: December 4, 2013
    Publication date: February 19, 2015
    Applicant: Western Digital (Fremont), LLC
    Inventors: LI ZENG, DEHUA HAN, ZHIGANG BAI, LISHA WANG
  • Patent number: 8940419
    Abstract: 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: Grant
    Filed: October 4, 2011
    Date of Patent: January 27, 2015
    Assignee: Toyo Kohan Co., Ltd.
    Inventor: Nobuaki Mukai
  • Publication number: 20150017482
    Abstract: The embodiments disclose a plasmonic cladding structure including at least one conformal plasmonic cladding structure wrapped around plural stack features of a recording device, wherein the conformal plasmonic cladding structure is configured to create a near-field transducer in close proximity to a recording head of the recording device, at least one conformal plasmonic cladding structure with substantially removed top surfaces of the stack features with exposed magnetic layer materials and a thermally insulating filler configured to be located between the stack features.
    Type: Application
    Filed: October 16, 2013
    Publication date: January 15, 2015
    Applicant: Seagate Technology LLC
    Inventors: Kim Y. Lee, Ganping Ju, Chubing Peng, Xiaobin Zhu, Yingguo Peng, Yukiko A. Kubota, Timothy J. Klemmer, Jan-Ulrich Thiele, Michael A. Seigler, Werner Scholz, David S. Kuo, Koichi Wago, Thomas P. Nolan
  • Patent number: 8932667
    Abstract: 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: Grant
    Filed: April 30, 2008
    Date of Patent: January 13, 2015
    Assignee: Seagate Technology LLC
    Inventors: Jiaoming Qiu, Younghua Chen, Xilin Peng, Shaun McKinlay, Eric W. Singleton, Brian W. Karr
  • Publication number: 20140363569
    Abstract: A mechanism is provided for a structure with perpendicular magnetic anisotropy. A bottom oxide layer is disposed, and a magnetic layer is disposed adjacent to the bottom oxide layer. The magnetic layer includes iron and is magnetized perpendicularly to a plane of the magnetic layer. A top oxide layer is disposed adjacent to the magnetic layer.
    Type: Application
    Filed: July 2, 2013
    Publication date: December 11, 2014
    Inventors: Guohan Hu, Daniel Worledge
  • Patent number: 8907666
    Abstract: A scissor style magnetic sensor having a novel hard bias structure for improved magnetic biasing robustness. The sensor includes a sensor stack that includes first and second magnetic layers separated by a non-magnetic layer such as an electrically insulating barrier layer or an electrically conductive spacer layer. The first and second magnetic layers have magnetizations that are antiparallel coupled, but that are canted in a direction that is neither parallel with nor perpendicular to the air bearing surface by a magnetic bias structure. The magnetic bias structure includes a neck portion extending from the back edge of the sensor stack and having first and second sides that are aligned with first and second sides of the sensor stack. The bias structure also includes a tapered or wedged portion extending backward from the neck portion.
    Type: Grant
    Filed: September 30, 2011
    Date of Patent: December 9, 2014
    Assignee: HGST Netherlands B.V.
    Inventors: Quang Le, Simon H. Liao, Shuxia Wang, Guangli Liu, Yongchul Ahn
  • Publication number: 20140355400
    Abstract: The embodiments of the present invention generally relate to a magnetic head having a magnetic lip. The vertical sides and the bottom of the magnetic lip are covered by one or more conductive layers. In one embodiment, the bottom of the magnetic lip is covered by a first conductive layer and the vertical sides of the magnetic hp are covered by a second conductive layer. The conductive layers are made of a material that would not react with oxygen, thus no oxide films are formed on the vertical sides and the bottom of the magnetic lip during the manufacturing of the magnetic head.
    Type: Application
    Filed: May 31, 2013
    Publication date: December 4, 2014
    Applicant: HGST NETHERLANDS B.V.
    Inventors: Hamid BALAMANE, Vijay Prakash Singh RAWAT, Matteo STAFFARONI
  • Publication number: 20140356411
    Abstract: The present invention includes nanotubes or rods, methods and arrays using plasmonic-magnetic bifunctional nanotubes or rods comprising: one or more silica nanotubes or rods; one or more nanomagnets embedded in a portion of the silica nanotubes or rods; and plasmonic metal nanoparticles uniformly coating in or on at least a portion of the surface of the nanomagnets and the silica nanotubes surface-coated.
    Type: Application
    Filed: June 4, 2014
    Publication date: December 4, 2014
    Inventors: Donglei Fan, Xiaobin Xu
  • Publication number: 20140355152
    Abstract: In one embodiment, a magnetic head includes a reference layer having magnetic orientation about aligned with a plane of deposition thereof; a first free layer having a magnetic orientation out of a plane of deposition thereof; a spacer layer between the reference layer and the first free layer; a second free layer having a magnetic orientation out of a plane of deposition thereof; and an inserting layer between the first and second free layers.
    Type: Application
    Filed: May 29, 2013
    Publication date: December 4, 2014
    Applicant: HGST Netherlands B.V.
    Inventors: Chando Park, James M. Freitag, Sangmun Oh, Zheng Gao
  • Patent number: 8900655
    Abstract: A method of fabricating a patterned perpendicular magnetic recording medium comprises steps of: (a) providing a layer stack including a magnetically soft underlayer (“SUL”) and an overlying non-magnetic interlayer; (b) forming a masking layer on the non-magnetic interlayer; (c) forming a resist layer on the masking layer; (d) forming a pattern of recesses extending through the resist layer and exposing spaced apart surface portions of the masking layer; (e) extending the pattern of recesses through the masking layer to expose spaced apart surface portions of the interlayer; and (f) at least partially filling the pattern of recesses with a magnetically hard material to form a perpendicular magnetic recording layer.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: December 2, 2014
    Assignee: Seagate Technology LLC
    Inventors: Bing K. Yen, David S. Kuo, Dieter K. Weller, Kim Y. Lee, Koichi Wago
  • Publication number: 20140347968
    Abstract: A method and apparatus for disc authentication are disclosed. The authentication method includes measuring at least one physical property of a data disc, which includes at least one of an angle and an eccentricity parameter associated with two data layers of a data disc, and authenticating the disc by determining whether a match exists between the measured property and encoded information on data layer the data disc relating to the physical property.
    Type: Application
    Filed: September 21, 2012
    Publication date: November 27, 2014
    Applicant: Thomson Licensing
    Inventors: John Matthew Town, Holger Hofmann, Alan Bruce Hamersley
  • Publication number: 20140334032
    Abstract: In one embodiment, a magnetic read head includes an antiferromagnetic (AFM) layer including a MnIr alloy having an L12 ordered phase, a pinned layer positioned above the AFM layer, and a seed layer positioned directly below the AFM layer, wherein the seed layer includes a laminated structure with an upper layer including Ru being positioned above one or more additional layers. In another embodiment, a magnetic read head includes an AFM layer including a MnIr alloy having an L12 ordered phase, a pinned layer positioned above the AFM layer, and a seed layer positioned directly below the AFM layer, the seed layer including a laminated structure of Ta/Y/Ru, wherein Y is a layer having an element or an alloy. Other magnetic heads having a reduced amount of random telegraph noise (RTN) and methods of formation thereof are disclosed according to more embodiments.
    Type: Application
    Filed: May 13, 2013
    Publication date: November 13, 2014
    Applicant: HGST Netherlands B.V.
    Inventors: Kouichi Nishioka, Koujiro Komagaki
  • Patent number: 8883249
    Abstract: 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: Grant
    Filed: December 28, 2010
    Date of Patent: November 11, 2014
    Assignee: WD Media (Singapore) Pte. Ltd.
    Inventors: Toshiaki Tachibana, Takahiro Onoue, Keiichi Kajita
  • Publication number: 20140322437
    Abstract: The present invention relates to non-magnetic particles for non-magnetic undercoat layer of magnetic recording medium, comprising: hematite particles; an inner coating layer comprising a phosphorus-containing inorganic compound which is formed on a surface of the respective hematite particles; and an outer coating layer comprising an aluminum-containing inorganic compound which is formed on an outside of the inner coating layer comprising the phosphorus-containing inorganic compound.
    Type: Application
    Filed: July 11, 2014
    Publication date: October 30, 2014
    Inventors: Seiji ISHITANI, Hiroko MORII, Kazuyuki HAYASHI
  • Publication number: 20140308490
    Abstract: A magnetizable ink contains at least 65% of magnetizable particles having a modal diameter between 3 ?m and 10 ?m. The particles may have a size distribution with 0% above 18 micron and not greater than 20% under 0.5 micron. The particles may have a surface area less than 50,000 cm2 per cm3, and/or the ink may have a viscosity less than 16,000 cps when ready to print. Where the particles are rounded, magnetically soft iron particles, the surface area may be less than 12,000 cm2 per cm3 and the viscosity may be less than 1,500 cps.
    Type: Application
    Filed: April 10, 2013
    Publication date: October 16, 2014
    Inventor: Roger Burrows
  • Patent number: 8861316
    Abstract: A write pole structure disclosed herein includes a write pole, a trailing shield, and a high magnetic moment (HMM) material layer on a surface of the trailing shield facing the write pole.
    Type: Grant
    Filed: December 18, 2012
    Date of Patent: October 14, 2014
    Assignee: Seagate Technology LLC
    Inventors: Huaqing Yin, Jianhua Xue, Venkateswara Rao Inturi, Mark Thomas Kief, Michael C. Kautzky
  • Patent number: 8852677
    Abstract: A method for fabricating a synthetic antiferromagnetic device, includes depositing a magnesium oxide spacer layer on a reference layer having a first and second ruthenium layer, depositing a cobalt iron boron layer on the magnesium oxide spacer layer; and depositing a third ruthenium layer on the cobalt iron boron layer, the third ruthenium layer having a thickness of approximately 0-18 angstroms.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: October 7, 2014
    Assignee: International Business Machines Corporation
    Inventors: David W. Abraham, Michael C. Gaidis, Janusz J. Nowak, Daniel C. Worledge
  • Publication number: 20140295073
    Abstract: A method of fabricating a magnetic recording medium by sequentially forming a magnetic recording layer, a protection layer, and a lubricant layer on a stacked body, includes forming the lubricant by depositing a first lubricant on the stacked body after forming the protection layer, by vapor-phase lubrication deposition, without exposing the stacked body to atmosphere, and depositing a second lubricant on the stacked body after depositing the first lubricant, by vapor-phase lubrication deposition, without exposing the stacked body to atmosphere. The first lubricant has a lower molecular mass and a higher chemical polarity than those of the second lubricant.
    Type: Application
    Filed: March 18, 2014
    Publication date: October 2, 2014
    Applicant: SHOWA DENKO K.K.
    Inventors: Takehiko OKABE, Katsuaki To
  • Patent number: 8846137
    Abstract: On manufacturing a magnetic disk having at least a magnetic layer (60), a protective layer (70), and a lubricating layer (80) formed in this order over a substrate (10), the lubricating layer is formed by using a coating solution in which a perfluoropolyether compound having a perfluoropolyether main chain and a hydroxyl group in a structure thereof is dispersed and dissolved in a fluorine-based solvent having a boiling point of 90° C. or more.
    Type: Grant
    Filed: February 18, 2010
    Date of Patent: September 30, 2014
    Assignee: WD Media (Singapore) Pte. Ltd.
    Inventors: Koichi Shimokawa, Katsushi Hamakubo, Kae Itoh
  • Patent number: 8846136
    Abstract: PROBLEM: To provide a production method of an anisotropic rare earth magnet capable of being enhanced in coercivity without adding a large amount of a rare metal such as Dy and Tb. MEANS FOR RESOLUTION: A production method of a rare earth magnet, comprising a step of bringing a compact obtained by applying hot working to impart anisotropy to a sintered body having a rare earth magnet composition into contact with a low-melting-point alloy melt containing a rare earth element.
    Type: Grant
    Filed: September 13, 2011
    Date of Patent: September 30, 2014
    Assignee: Toyota Jidosha Kabushiki Kaisha
    Inventors: Tetsuya Shoji, Noritaka Miyamoto, Shinya Omura, Daisuke Ichigozaki, Takeshi Yamamoto
  • Patent number: 8840955
    Abstract: A method of manufacturing a magnetic recording medium is disclosed, as well as a magnetic recording medium manufactured by the method. In the manufacturing method, the uneven pattern has magnetic recording elements in protruding portions formed above a substrate, and depressed portions between the recording elements are filled with a filling material. The method allows a high quality magnetic recording medium to be manufactured inexpensively by eliminating the process of removing excess filling material used to fill depressions between magnetic recording elements, because the method allows material to be filled only in the depressed portions of an uneven pattern. The method includes a technique rendering the wettability of the protruding portion surfaces and the depressed portion surfaces different prior to the process of filling with the filling material.
    Type: Grant
    Filed: October 23, 2009
    Date of Patent: September 23, 2014
    Assignee: Fuji Electric Co., Ltd.
    Inventor: Narumi Sato
  • Publication number: 20140272471
    Abstract: In accordance with one embodiment, an apparatus can be configured that includes a main pole layer of magnetic material; a second layer of magnetic material; a first gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material; a second gap layer of non-magnetic material disposed between the main pole layer and the second layer of magnetic material; and wherein the second gap layer of non-magnetic material is disposed directly adjacent to the second layer of magnetic material. In accordance with one embodiment, this allows the gap to serve as a non-magnetic seed for the second layer of magnetic material. In accordance with one embodiment, this allows the gap to serve as a non-magnetic seed for the second layer of magnetic material. In accordance with one embodiment, a method of manufacturing such a device may also be utilized.
    Type: Application
    Filed: March 12, 2013
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventors: Wei Tian, Venkateswara Rao Inturi, Doug Lin, Huaqing Yin, Jiaoming Qiu
  • Publication number: 20140268422
    Abstract: A data reader and associated method of making are generally provided. A data reader capable of sensing adjacent data bits may be configured at least with a magnetic stack disposed between first and second side shields. Each side shield may have a polish stop layer that is tuned to provide a first predetermined polish rate.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 18, 2014
    Applicant: Seagate Technology LLC
    Inventors: Shaun Eric McKinlay, Eric W. Singleton, Carolyn Pitcher Van Dorn, Levent Colak, Thu-Van Thi Nguyen
  • Patent number: 8834962
    Abstract: Methods for improving the strength of glass substrates are described. One such method for strengthening a glass disk substrate for a storage device includes immersing at least a portion of the glass substrate in a solution, the solution including a solvent and a coating material selected from the group consisting of NaOH, KOH, and KNO3, removing the glass substrate from the solution, allowing the solvent to evaporate from the glass substrate, and heating the glass substrate at a preselected temperature for a preselected duration, where the preselected temperature is sufficient to substantially melt the coating material and is less than a transition temperature of the glass substrate.
    Type: Grant
    Filed: June 3, 2011
    Date of Patent: September 16, 2014
    Assignee: WD Media, LLC
    Inventors: Shoji Suzuki, Chris Brisko