Patents by Inventor Timothy J. Klemmer
Timothy J. Klemmer 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).
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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
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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
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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
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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
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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
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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
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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
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Patent number: 8503126Abstract: A method includes activating a stress-effecting layer of a thin film structure, having the stress effecting layer adjacent to a magnetic layer, to induce a magneto-elastic anisotropy in the magnetic layer.Type: GrantFiled: January 18, 2012Date of Patent: August 6, 2013Assignee: Seagate Technology LLCInventors: Yiao-Tee Hsia, Wei Peng, Timothy J. Klemmer
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Publication number: 20120113541Abstract: A method includes activating a stress-effecting layer of a thin film structure, having the stress effecting layer adjacent to a magnetic layer, to induce a magneto-elastic anisotropy in the magnetic layer.Type: ApplicationFiled: January 18, 2012Publication date: May 10, 2012Applicant: SEAGATE TECHNOLOGY LLCInventors: Yiao-Tee Hsia, Wei Peng, Timothy J. Klemmer
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Patent number: 8119265Abstract: A thin film structure, such as a magnetic recording media, having a magnetic layer and a stress-effecting layer is disclosed. The stress-effecting layer induces a magneto-elastic anisotropy in the magnetic layer. The stress-effecting layer can be activated by the application of an external stress and/or strain. The induced magneto-elastic anisotropy can transiently achieve and/or enhance a tilt angle of the medium. The medium can be a perpendicular magnetic recording medium, a longitudinal magnetic recording medium and/or a tilted magnetic recording medium. The magnetic recording media is suitable for use with a data storage system, such as a HAMR data storage system.Type: GrantFiled: November 2, 2005Date of Patent: February 21, 2012Assignee: Seagate Technology LLCInventors: Yiao-Tee Hsia, Wei Peng, Timothy J. Klemmer
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Patent number: 7986493Abstract: A magnetic recording medium with domain wall pinning sites including a substrate, a soft magnetic underlayer, and a magnetic recording layer overlying the soft magnetic underlayer. In one embodiment the magnetic recording layer has at least two grooves providing a track having first and second sidewalls formed by the grooves. The sidewalls provide a plurality of pinning sites formed between the sidewalls for pinning magnetic domain walls in the track. At least one of the pinning sites includes a first indentation in the first sidewall and a paired second indentation in the second sidewall. In one embodiment data can be stored within the magnetic recording layer by positioning a write head adjacent the track and inducing at least two magnetic domains defining a domain wall. The domain wall migrates to one of the pinning sites in the track.Type: GrantFiled: November 28, 2007Date of Patent: July 26, 2011Assignee: Seagate Technology LLCInventors: Dieter Weller, Timothy J. Klemmer, Kim Y. Lee
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Publication number: 20090135518Abstract: A magnetic recording medium with domain wall pinning sites including a substrate, a soft magnetic underlayer, and a magnetic recording layer overlying the soft magnetic underlayer. In one embodiment the magnetic recording layer has at least two grooves providing a track having first and second sidewalls formed by the grooves. The sidewalls provide a plurality of pinning sites formed between the sidewalls for pinning magnetic domain walls in the track. At least one of the pinning sites includes a first indentation in the first sidewall and a paired second indentation in the second sidewall. In one embodiment data can be stored within the magnetic recording layer by positioning a write head adjacent the track and inducing at least two magnetic domains defining a domain wall. The domain wall migrates to one of the pinning sites in the track.Type: ApplicationFiled: November 28, 2007Publication date: May 28, 2009Inventors: Dieter Weller, Timothy J. Klemmer, Kim Y. Lee
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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
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Patent number: 7153597Abstract: A data storage medium is provided according to the present invention for magnetic recording. The data storage medium includes a substrate having a locking pattern etched therein defining patterned regions. The patterned regions are chemically modified by depositing a self-assembled monolayer therein. A first layer of nanoparticles is provided in the patterned regions on top of the self-assembled monolayer and is chemically bonded to the substrate via the self-assembled monolayer. The first layer of nanoparticles is chemically modified using functional surfactant molecules applied thereto, such that a second layer of nanoparticles may be formed on top of the first layer and chemically bonded thereto via the functional surfactant molecules. Additional layers of nanoparticles may be applied by chemically modifying the top layer of nanoparticles utilizing the functional surfactant molecules and applying a further layer of nanoparticles thereto.Type: GrantFiled: October 9, 2003Date of Patent: December 26, 2006Assignee: Seagate Technology LLCInventors: Xiaomin Yang, Earl C. Johns, Timothy J. Klemmer, Chao Liu, Dieter K. Weller
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Patent number: 7094483Abstract: A magnetic storage media comprises a substrate supporting the layer of magnetic media having a tilted C-axis greater than approximately 25° with respect to surface normal and having a magnetic easy axis tilted at an angle at approximately greater than 30° from the substrate surface normal. The media includes an oblique deposited seedlayer structure directing tilted C-axis growth of the magnetic material layer independent of the angle of deposition of the magnetic material layer. The orientation C-axis and the magnetic easy axis of the media may be organized into circumferential or radial patterns on the substrate surface, and additionally may possess azimuthal symmetry.Type: GrantFiled: September 29, 2003Date of Patent: August 22, 2006Assignee: Seagate Technology LLCInventors: Kalman Pelhos, Timothy J. Klemmer, Michael A. Seigler
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Patent number: 6838195Abstract: A self-organized magnetic array includes a plurality of magnetic primary nanoparticles are arranged on the substrate in a self-organized magnetic array. A plurality of magnetic interstitial nanoparticles are positioned between at least some of the primary nanoparticles in the self-organized magnetic array. A method of making such an array is also provided.Type: GrantFiled: February 13, 2003Date of Patent: January 4, 2005Assignee: Seagate Technology LLCInventors: Dieter K. Weller, Chao Liu, Timothy J. Klemmer
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Patent number: 6822829Abstract: A perpendicular magnetic recording head includes a multilayered main write pole. The main write pole includes a first layer of material, a second layer of material, and an interlayer positioned between the first layer of material and the second layer of material. The second layer of material has a saturation magnetic moment greater than a saturation magnetic moment of the first layer of material.Type: GrantFiled: February 20, 2002Date of Patent: November 23, 2004Assignee: Seagate Technology LLCInventors: Michael K. Minor, Timothy J. Klemmer
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Patent number: 6795273Abstract: A magnetic recording head includes a write pole having alternating layers of Fe and Co and a return pole magnetically coupled to the write pole. The layers of Fe may have a thickness from about 1.0 angstroms to about 40.0 angstroms and the layers of Co may have a thickness from about 1.0 angstroms to about 20.0 angstroms. The write pole may have a saturation magnetization greater than about 2.45 Tesla. A method for forming a write pole for a magnetic recording head is also disclosed.Type: GrantFiled: January 6, 2003Date of Patent: September 21, 2004Assignee: Quantum Materials Design, Inc.Inventors: Michael K. Minor, Timothy J. Klemmer, Michael A. Seigler, Arthur J. Freeman
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Publication number: 20040115481Abstract: A magnetic storage media comprises a substrate supporting the layer of magnetic media having a tilted C-axis greater than approximately 25° with respect to surface normal and having a magnetic easy axis tilted at an angle at approximately greater than 30° from the substrate surface normal. The media includes an oblique deposited seedlayer structure directing tilted C-axis growth of the magnetic material layer independent of the angle of deposition of the magnetic material layer. The orientation C-axis and the magnetic easy axis of the media may be organized into circumferential or radial patterns on the substrate surface, and additionally may possess azimuthal symmetry.Type: ApplicationFiled: September 29, 2003Publication date: June 17, 2004Applicant: Seagate Technology LLCInventors: Kalman Pelhos, Timothy J. Klemmer, Michael A. Seigler
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Publication number: 20040071924Abstract: A data storage medium is provided according to the present invention for magnetic recording. The data storage medium includes a substrate having a locking pattern etched therein defining patterned regions. The patterned regions are chemically modified by depositing a self-assembled monolayer therein. A first layer of nanoparticles is provided in the patterned regions on top of the self-assembled monolayer and is chemically bonded to the substrate via the self-assembled monolayer. The first layer of nanoparticles is chemically modified using functional surfactant molecules applied thereto, such that a second layer of nanoparticles may be formed on top of the first layer and chemically bonded thereto via the functional surfactant molecules. Additional layers of nanoparticles may be applied by chemically modifying the top layer of nanoparticles utilizing the functional surfactant molecules and applying a further layer of nanoparticles thereto.Type: ApplicationFiled: October 9, 2003Publication date: April 15, 2004Applicant: Seagate Technology LLCInventors: Xiaomin Yang, Earl C. Johns, Timothy J. Klemmer, Chao Liu, Dieter K. Weller