Patents by Inventor Marcus Ormston
Marcus Ormston 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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Patent number: 10837105Abstract: A multi-layer barrier and method of formation. The method includes applying oxidation to a top of a reference layer, and depositing a plurality of different metal layers over the reference layer. The method also includes providing different oxidation doses at different temperatures to different layers of the plurality of metal layers. The method further includes performing an annealing operation after depositing at least two of the plurality of different metal layers.Type: GrantFiled: January 3, 2019Date of Patent: November 17, 2020Assignee: SEAGATE TECHNOLOGY LLCInventors: Sameh Hassan, Marcus Ormston, Emeline Hassen, Gabriel McCafferty
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Patent number: 10121499Abstract: A read sensor that includes a free layer having a magnetization that changes according to an external magnetic field. The read sensor also includes an additional magnetic layer and a non-magnetic layer. The non-magnetic layer may include a corrugated surface facing the additional magnetic layer. The corrugated surface is configured to enhance uniaxial anisotropy in the read sensor.Type: GrantFiled: June 9, 2017Date of Patent: November 6, 2018Assignee: Seagate Technology LLCInventors: Sameh Hassan, Wonjoon Jung, Mark Kief, Marcus Ormston
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Patent number: 10008223Abstract: A read sensor having a bearing surface and an antiferromagnetic (AFM) layer recessed from the bearing surface. The read sensor includes a synthetic antiferromagnetic (SAF) structure over the AFM layer. The SAF structure includes a recessed lower pinned layer, an upper pinned layer, a reference layer and a stabilization feature. The stabilization feature may include deliberate reduction of the antiferromagnetic coupling energy density between the upper pinned layer and the reference layer, so that it becomes lower than the first energy density of antiferromagnetic coupling between the upper pinned layer and the lower pinned layer. The stabilization feature may alternatively include an intermediate pinned layer between the lower pinned layer and the upper pinned layer. The intermediate pinned layer is antiferromagnetically coupled to both the lower pinned layer and the upper pinned layer, and at least a portion of the intermediate pinned layer is recessed behind the bearing surface.Type: GrantFiled: February 17, 2017Date of Patent: June 26, 2018Assignee: Seagate Technology LLCInventors: Alexey Dobrynin, Zhiran Wang, Kevin McNeill, Denis O'Donnell, Sameh Hassan, Marcus Ormston, Robert William Lamberton
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Patent number: 9870790Abstract: A read sensor and fabrication method thereof. The method includes forming a bottom stack that includes an antiferromagnetic (AFM) layer, a lower ferromagnetic stitch layer above the AFM layer and a sacrificial cap layer on the lower ferromagnetic stitch layer. The sacrificial cap layer is formed of a material that alloys magnetically with the lower ferromagnetic stitch layer. The method further includes substantially removing the sacrificial cap layer. After substantially removing the sacrificial layer, an upper ferromagnetic stitch layer is deposited on the lower ferromagnetic stitch layer of the bottom stack to form a stitch interface that provides relatively strong magnetic coupling between the lower ferromagnetic stitch layer of the bottom stack and the upper ferromagnetic stitch layer.Type: GrantFiled: May 18, 2016Date of Patent: January 16, 2018Assignee: Seagate Technology LLCInventors: Sameh Hassan, Yuqing Du, Marcus Ormston, Denis O'Donnell, Kevin McNeill
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Publication number: 20170278529Abstract: A read sensor that includes a free layer having a magnetization that changes according to an external magnetic field. The read sensor also includes an additional magnetic layer and a non-magnetic layer. The non-magnetic layer may include a corrugated surface facing the additional magnetic layer. The corrugated surface is configured to enhance uniaxial anisotropy in the read sensor.Type: ApplicationFiled: June 9, 2017Publication date: September 28, 2017Inventors: Sameh Hassan, Wonjoon Jung, Mark Kief, Marcus Ormston
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Patent number: 9679589Abstract: A read sensor that includes a free layer having a magnetization that changes according to an external magnetic field. The read sensor also includes an additional magnetic layer and a non-magnetic layer. The non-magnetic layer may include a corrugated surface facing the additional magnetic layer. The corrugated surface is configured to enhance uniaxial anisotropy in the read sensor.Type: GrantFiled: September 11, 2015Date of Patent: June 13, 2017Assignee: Seagate Technology LLCInventors: Sameh Hassan, Wonjoon Jung, Mark Kief, Marcus Ormston
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Publication number: 20170076743Abstract: A read sensor that includes a free layer having a magnetization that changes according to an external magnetic field. The read sensor also includes an additional magnetic layer and a non-magnetic layer. The non-magnetic layer may include a corrugated surface facing the additional magnetic layer. The corrugated surface is configured to enhance uniaxial anisotropy in the read sensor.Type: ApplicationFiled: September 11, 2015Publication date: March 16, 2017Inventors: Sameh Hassan, Wonjoon Jung, Mark Kief, Marcus Ormston
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Patent number: 9165571Abstract: A data storage system may be configured at least with a seed lamination that is disposed between a magnetic stack and a magnetic shield. The seed lamination may be constructed and operated with a coupling buffer layer and a seed layer with the coupling buffer layer fabricated of an alloy of cobalt and a transition metal.Type: GrantFiled: November 11, 2013Date of Patent: October 20, 2015Assignee: Seagate Technology LLCInventors: Gabriel G. McCafferty, Sameh Sayed Ali Hassan, Marcus Ormston, Kevin A. McNeill
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Patent number: 9047884Abstract: A data storage device may be constructed to sense data bits with at least a magnetic stack contacting a shield that has a horizontal lamination of magnetic and non-magnetic layers. The magnetic layer may be configured with a first width at an air bearing surface (ABS) that defines a first aspect ratio and a different second width that defines a different second aspect ratio distal the ABS.Type: GrantFiled: August 6, 2013Date of Patent: June 2, 2015Assignee: Seagate Technology LLCInventors: Kevin McNeill, Peter McGeehin, Marcus Ormston, Aidan Goggin
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Publication number: 20150131182Abstract: A data storage system may be configured at least with a seed lamination that is disposed between a magnetic stack and a magnetic shield. The seed lamination may be constructed and operated with a coupling buffer layer and a seed layer with the coupling buffer layer fabricated of an alloy of cobalt and a transition metal.Type: ApplicationFiled: November 11, 2013Publication date: May 14, 2015Applicant: Seagate Technology LLCInventors: Gabriel G. McCafferty, Sameh Sayed Ali Hassan, Marcus Ormston, Kevin A. McNeill
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Patent number: 8988832Abstract: Implementations disclosed herein allow a signal detected by a magnetoresistive (MR) sensor to be improved by providing for a region of reduced anisotropy within a synthetic antiferromagnetic (SAF) shield. The SAF shield includes first and second layers of ferromagnetic material separated by a coupling spacer layer. A distance between the first and second layers of ferromagnetic material is greater in a region proximal to the sensor stack than in a region away from the sensor stack.Type: GrantFiled: July 30, 2013Date of Patent: March 24, 2015Assignee: Seagate Technology LLCInventors: Kevin McNeill, Aidan Goggin, Marcus Ormston, Victor Boris Sapozhnikov
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Publication number: 20150043107Abstract: A data storage device may be constructed to sense data bits with at least a magnetic stack contacting a shield that has a horizontal lamination of magnetic and non-magnetic layers. The magnetic layer may be configured with a first width at an air bearing surface (ABS) that defines a first aspect ratio and a different second width that defines a different second aspect ratio distal the ABS.Type: ApplicationFiled: August 6, 2013Publication date: February 12, 2015Applicant: Seagate Technology LLCInventors: Kevin McNeill, Peter McGeehin, Marcus Ormston, Aidan Goggin
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Publication number: 20150036246Abstract: Implementations disclosed herein allow a signal detected by a magnetoresistive (MR) sensor to be improved by providing for a region of reduced anisotropy within a synthetic antiferromagnetic (SAF) shield. The SAF shield includes first and second layers of ferromagnetic material separated by a coupling spacer layer. A distance between the first and second layers of ferromagnetic material is greater in a region proximal to the sensor stack than in a region away from the sensor stack.Type: ApplicationFiled: July 30, 2013Publication date: February 5, 2015Applicant: Seagate Technology LLCInventors: Kevin McNeill, Aiden Goggin, Marcus Ormston, Victor Boris Sapozhnikov
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Patent number: 8922952Abstract: A data sensor may be configured in accordance with some embodiments to have a magnetically responsive stack that contacts at least one shield. The at least one shield may be constructed with a non-rectangular shaped electrical contact, such as a triangular and trapezoidal shape, respectively positioned on top and bottom shields on opposite sides of the magnetically responsive stack.Type: GrantFiled: March 15, 2013Date of Patent: December 30, 2014Assignee: Seagate Technology LLCInventors: Peter McGeehin, Aidan Goggin, Kevin McNeill, Marcus Ormston
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Publication number: 20140268429Abstract: A data sensor may be configured in accordance with some embodiments to have a magnetically responsive stack that contacts at least one shield. The at least one shield may be constructed with a non-rectangular shaped electrical contact, such as a triangular and trapezoidal shape, respectively positioned on top and bottom shields on opposite sides of the magnetically responsive stack.Type: ApplicationFiled: March 15, 2013Publication date: September 18, 2014Applicant: SEAGATE TECHNOLOGY LLCInventors: Peter McGeehin, Aidan Goggin, Kevin McNeill, Marcus Ormston
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Patent number: 8743507Abstract: A magnetic element may generally be configured at least with a magnetic stack contacting a leading shield with a seed trilayer. The seed trilayer may have a magnetic layer formed of a metal material and disposed between first and second non-magnetic layers while at least one of the non-magnetic layers constructed of the metal material.Type: GrantFiled: March 12, 2013Date of Patent: June 3, 2014Assignee: Seagate Technology LLCInventors: Sameh Sayed Ali Hassan, Gabriel G. McCafferty, Yuqing Du, Marcus Ormston