Patents by Inventor Yukiko Kubota
Yukiko Kubota has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Publication number: 20150154995Abstract: Provided herein is an apparatus comprising a substrate; a continuous layer over the substrate comprising a first heat sink layer; and a plurality of features over the continuous layer comprising a second heat sink layer, a first magnetic layer over the second heat sink layer, and a second magnetic layer, wherein the first and second magnetic layers are configured to provide a temperature-dependent, exchange spring mechanism.Type: ApplicationFiled: February 10, 2015Publication date: June 4, 2015Inventors: Xi Chen, Ganping Ju, Yingguo Peng, Timothy J. Klemmer, Yukiko Kubota, Jan-Ulrich Thiele, David S. Kuo, Kai-Chieh Chang, Kangkang Wang, Li Gao, Yinfeng Ding
-
Publication number: 20150093598Abstract: A stack includes a substrate and a magnetic recording layer. Disposed between the substrate and magnetic recording layer is an MgO—Ti(ON) layer.Type: ApplicationFiled: October 31, 2013Publication date: April 2, 2015Applicant: Seagate Technology LLCInventors: Yukiko Kubota, Timothy J. Klemmer, Kai Chieh Chang, Li Gao, Yinfeng Ding, Yingguo Peng, Jan-Ulrich Thiele
-
Patent number: 8988976Abstract: The embodiments disclose a patterned composite magnetic layer structure configured to use magnetic materials having differing temperature and magnetization characteristics in a recording device, wherein the patterned composite magnetic layer structure includes magnetic layers, at least one first magnetic material configured to be used in a particular order to reduce a recording temperature and configured to control and regulate coupling and decoupling of the magnetic layers and at least one second magnetic material with differing temperature characteristics is configured to control recording and erasing of data.Type: GrantFiled: October 16, 2013Date of Patent: March 24, 2015Assignee: Seagate Technology LLCInventors: Xi Chen, Ganping Ju, Yingguo Peng, Timothy J. Klemmer, Yukiko Kubota, Jan-Ulrich Thiele, David S. Kuo, Kai-Chieh Chang, Kangkang Wang, Li Gao, Yinfeng Ding
-
Publication number: 20150016774Abstract: 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: ApplicationFiled: October 16, 2013Publication date: January 15, 2015Applicant: SEAGATE TECHNOLOGY LLCInventors: Ganping Ju, Chubing Peng, Xiaobin Zhu, Yingguo Peng, Yukiko A Kubota, Timothy J Klemmer, Jan-Ulrich Thiele, Michael A. Seigler, Werner Scholz, Kim Y. Lee, David S. Kuo, Koichi Wago
-
Publication number: 20150017482Abstract: 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: ApplicationFiled: October 16, 2013Publication date: January 15, 2015Applicant: Seagate Technology LLCInventors: 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
-
Publication number: 20150016237Abstract: The embodiments disclose a patterned composite magnetic layer structure configured to use magnetic materials having differing temperature and magnetization characteristics in a recording device, wherein the patterned composite magnetic layer structure includes magnetic layers, at least one first magnetic material configured to be used in a particular order to reduce a recording temperature and configured to control and regulate coupling and decoupling of the magnetic layers and at least one second magnetic material with differing temperature characteristics is configured to control recording and erasing of data.Type: ApplicationFiled: October 16, 2013Publication date: January 15, 2015Applicant: SEAGATE TECHNOLOGY LLCInventors: Xi Chen, Ganping Ju, Yingguo Peng, Timothy J. Klemmer, Yukiko A. Kubota, Jan-Ulrich Thiele, David S. Kuo, Kai-Chieh Chang, Kangkang Wang, Li Gao, Yinfeng Ding
-
Publication number: 20150013946Abstract: The embodiments disclose at least one predetermined patterned layer configured to eliminate a physical path of lateral thermal bloom in a recording device, at least one gradient layer coupled to the patterned layer and configured to use materials with predetermined thermal conductivity for controlling a rate of dissipation and a path coupled to the gradient layer and configured to create a path of least thermal conduction resistance for directing dissipation along the path, wherein the path substantially regulates and prevents lateral thermal bloom.Type: ApplicationFiled: October 16, 2013Publication date: January 15, 2015Applicant: SEAGATE TECHNOLOGY LLCInventors: Ganping Ju, Xiaobin Zhu, Chubing Peng, Yukiko A. Kubota, Yingguo Peng, Timothy J. Klemmer, Jan-Ulrich Thiele, David S. Kuo, Bin Lu, Julius K. Hohlfeld
-
Patent number: 8841007Abstract: Various magnetic stack embodiments may be constructed with a soft magnetic underlayer (SUL) having a first thickness disposed between a substrate and a magnetic recording layer. A heatsink may have a second thickness and be disposed between the SUL and the magnetic recording layer. The first and second thicknesses may each be tuned to provide predetermined thermal conductivity and magnetic permeability throughout the data media.Type: GrantFiled: April 27, 2012Date of Patent: September 23, 2014Assignee: Seagate Technology LLCInventors: Kai-Chieh Chang, Yinfong Ding, Ganping Ju, Timothy Klemmer, Yukiko Kubota, Thomas P. Nolan, Yingguo Peng, Jan-Ulrich Thiele, Qihong Wu, Xiaobin Zhu
-
Patent number: 8830629Abstract: An apparatus includes a non-metallic interlayer between a magnetic data storage layer and a heat sink layer, wherein interface thermal resistance between the interlayer and the heat sink layer is capable of reducing heat flow between the heat sink layer and the magnetic data storage layer. The apparatus may be configured as a thin film structure arranged for data storage. The apparatus may also include thermal resistor layer positioned between the interlayer and the heat sink layer.Type: GrantFiled: October 22, 2013Date of Patent: September 9, 2014Assignee: Seagate Technology LLCInventors: Julius Kurt Hohlfeld, Bin Lu, Ganping Ju, Amit V. Itagi, Timothy Klemmer, Yingguo Peng, Yukiko Kubota
-
Patent number: 8765273Abstract: A data media may generally be configured in accordance with various embodiments with contactingly adjacent first and second heatsink layers that are tuned with a common crystallographic orientation and with different thermal conductivities to provide a predetermined thermal gradient. The data media may further be configured with a recording layer formed with the common crystallographic orientation adjacent the first and second heatsink layers.Type: GrantFiled: October 17, 2012Date of Patent: July 1, 2014Assignee: Seagate Technology LLCInventors: Yukiko Kubota, Xiaobin Zhu, Kai-Chieh Chang, Yingguo Peng, Yinfeng Ding, Timothy John Klemmer, Jan-Ulrich Thiele, Ganping Ju, Qihong Wu, Hassib Amini
-
Publication number: 20140043947Abstract: An apparatus includes a non-metallic interlayer between a magnetic data storage layer and a heat sink layer, wherein interface thermal resistance between the interlayer and the heat sink layer is capable of reducing heat flow between the heat sink layer and the magnetic data storage layer. The apparatus may be configured as a thin film structure arranged for data storage. The apparatus may also include thermal resistor layer positioned between the interlayer and the heat sink layer.Type: ApplicationFiled: October 22, 2013Publication date: February 13, 2014Applicant: Seagate Technology LLCInventors: Julius Kurt Hohlfeld, Bin Lu, Ganping Ju, Amit V. Itagi, Timothy Klemmer, Yingguo Peng, Yukiko Kubota
-
Patent number: 8576515Abstract: An apparatus includes a non-metallic interlayer between a magnetic data storage layer and a heat sink layer, wherein interface thermal resistance between the interlayer and the heat sink layer is capable of reducing heat flow between the heat sink layer and the magnetic data storage layer. The apparatus may be configured as a thin film structure arranged for data storage. The apparatus may also include thermal resistor layer positioned between the interlayer and the heat sink layer.Type: GrantFiled: March 30, 2012Date of Patent: November 5, 2013Assignee: Seagate Technology LLCInventors: Julius K. Hohlfeld, Bin Lu, Ganping A. Ju, Amit V. Itagi, Timothy Klemmer, Yingguo Peng, Yukiko Kubota
-
Publication number: 20130288079Abstract: Various magnetic slack embodiments may be constructed with a soft magnetic underlayer (SUL) having a first thickness disposed between a substrate and a magnetic recording layer. A heatsink may have a second thickness and be disposed between the SUL and the magnetic recording layer. The first and second thicknesses may each be tuned to provide predetermined thermal conductivity and magnetic permeability throughout the data media.Type: ApplicationFiled: April 27, 2012Publication date: October 31, 2013Applicant: SEAGATE TECHNOLOGY LLCInventors: Kai-Chieh Chang, Yinfeng Ding, Ganping Ju, Timothy Klemmer, Yukiko Kubota, Thomas P. Nolan, Yingguo Peng, Jan-Ulrich Thiele, Qihong Wu, Xiaobin Zhu
-
Publication number: 20130266740Abstract: A data device may have at least a magnetic lamination with a thermal retention structure deposited on a substrate and configured to maintain a predetermined temperature for a predetermined amount of time. Such predetermined temperature and amount of time may allow for the growth of a magnetic layer with a predetermined magnetic anisotropy.Type: ApplicationFiled: April 9, 2012Publication date: October 10, 2013Applicant: SEAGATE TECHNOLOGY LLCInventor: Yukiko Kubota
-
Publication number: 20120194942Abstract: An apparatus includes a non-metallic interlayer between a magnetic data storage layer and a heat sink layer, wherein interface thermal resistance between the interlayer and the heat sink layer is capable of reducing heat flow between the heat sink layer and the magnetic data storage layer. The apparatus may be configured as a thin film structure arranged for data storage. The apparatus may also include thermal resistor layer positioned between the interlayer and the heat sink layer.Type: ApplicationFiled: March 30, 2012Publication date: August 2, 2012Applicant: SEAGATE TECHNOLOGY LLCInventors: Julius K. Hohlfeld, Bin Lu, Ganping Ju, Amit V. Itagi, Timothy Klemmer, Yingguo Peng, Yukiko Kubota
-
Patent number: 7862914Abstract: Metal alloy heatsink films for magnetic recording media are disclosed. The metal alloy heatsink films possess both high thermal conductivity and improved mechanical properties such as relatively high hardness. The metal alloy heatsink films also have controlled microstructures which are compatible with subsequently deposited crystalline magnetic recording layers. The films may comprise single phase CuZr or AgPd alloys having a selected crystal structure and orientation. The combination of high thermal conductivity, good mechanical properties and controlled microstructures makes the metal alloy heatsink films suitable for various applications including heat assisted magnetic recording systems.Type: GrantFiled: July 26, 2005Date of Patent: January 4, 2011Assignee: Seagate Technology LLCInventors: Yukiko Kubota, Bin Lu, Jai-Young Kim, Julius Kurt Hohlfeld
-
Publication number: 20100165508Abstract: A perpendicular magnetic recording layer of a magnetic recording medium includes a plurality of bit-patterned magnetic islands, wherein each of the plurality of islands overlay a soft magnetic under-layer. Each of the magnetic islands includes a first magnetic sub-layer adjacent a second magnetic sub-layer, wherein the first sub-layer has a relatively high magnetic anisotropy that is greater than a magnetic anisotropy of the second sub-layer. The magnetic recording layer further includes a third sub-layer, which extends to connect each of the plurality of islands. The third sub-layer may have a magnetic anisotropy that is less than that of the second sub-layer of each of the magnetic islands and/or may serve as an interlayer, extending between the first sub-layer and the soft magnetic under-layer of the recording medium, and having a structure to help to produce the greater anisotropy first magnetic sub-layer.Type: ApplicationFiled: December 31, 2008Publication date: July 1, 2010Applicant: SEAGATE TECHNOLOGY LLCInventors: Erol Girt, Dieter K. Weller, Alexander Y. Dobin, Bogdan F. Valcu, Thomas F. Ambrose, Yingguo Peng, Yukiko A. Kubota, Abebe Hailu
-
Patent number: 7521137Abstract: Patterned thin films comprise regions of relatively low thermal conductivity material separated by regions of relatively high thermal conductivity material. The low thermal conductivity regions may be provided in the form of cylinders or cuboids which are arranged in a continuous matrix of the high thermal conductivity material. The thin film may be used as thermal control layers in data recording media such as heat assisted magnetic recording media.Type: GrantFiled: January 12, 2005Date of Patent: April 21, 2009Assignee: Seagate Technology LLCInventors: Julius Kurt Hohlfeld, Yukiko Kubota, Dieter Klaus Weller, Stanko Radvan Brankovic, Xiaomin Yang, Earl Chrzaszcz Johns
-
Patent number: 7449255Abstract: A magnetic recording medium for communication with a transducer moving relative to the recording medium along a line of relative transducer motion. The magnetic recording medium has a substrate with a substrate surface, and a seed layer on the substrate surface. The magnetic recording medium also has a soft magnetic underlayer on the seed layer. The soft magnetic underlayer includes a magnetic material having a magnetic moment larger than 1.7 teslas. The soft magnetic underlayer has a texture that provides a magnetic easy axis that has an easy axis alignment parallel to the line of relative transducer motion. A magnetic storage layer is on the soft magnetic underlayer.Type: GrantFiled: August 28, 2003Date of Patent: November 11, 2008Assignee: Seagate Technology LLCInventors: Yukiko Kubota, Duane Clifford Karns, Kurt Warren Wierman
-
Publication number: 20080254322Abstract: An apparatus includes a thermally insulating substrate, an energy absorbing layer on the thermally insulating substrate, and a flash annealed magnetic layer on the energy absorbing layer. The flash annealed magnetic layer may be configured for data storage. A method includes providing a thermally insulating substrate, depositing an energy absorbing layer on the thermally insulating substrate, depositing a magnetic layer on the energy absorbing layer, and flash annealing the magnetic layer.Type: ApplicationFiled: April 11, 2007Publication date: October 16, 2008Applicant: Seagate Technology LLCInventors: Timothy J. Klemmer, Yukiko Kubota