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公开(公告)号：US11289117B1
公开(公告)日：2022-03-29
申请号：US17170126
申请日：2021-02-08
申请人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Hironori Araki , Yoji Nomura , Tetsuya Roppongi , Tetsuhito Shinohara , Ying Liu , Min Li , Alain Truong , Yuhui Tang , Wenyu Chen
发明人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Hironori Araki , Yoji Nomura , Tetsuya Roppongi , Tetsuhito Shinohara , Ying Liu , Min Li , Alain Truong , Yuhui Tang , Wenyu Chen
摘要： A magnetic head includes a medium facing surface, a main pole, a trailing shield, and a spin torque oscillator. A bottom surface of the trailing shield includes a first portion that includes an end located in the medium facing surface and is in contact with the spin torque oscillator at least in part. An element height that is a dimension of the spin torque oscillator in a direction perpendicular to the medium facing surface and a writer height that is a dimension of the first portion in the direction perpendicular to the medium facing surface are different from each other.
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公开(公告)号：US11211082B1
公开(公告)日：2021-12-28
申请号：US17169995
申请日：2021-02-08
申请人： Yoshitaka Sasaki , Hiroyuki Ito , Tetsuhito Shinohara , Shigeki Tanemura , Kazuki Sato , Yoji Nomura , Hironori Araki , Tetsuya Roppongi
发明人： Yoshitaka Sasaki , Hiroyuki Ito , Tetsuhito Shinohara , Shigeki Tanemura , Kazuki Sato , Yoji Nomura , Hironori Araki , Tetsuya Roppongi
摘要： A magnetic head includes a medium facing surface, a main pole, a trailing shield, a spin torque oscillator, and a first insulating layer. The first insulating layer is interposed between a portion of the main pole and a portion of the spin torque oscillator. The first insulating layer has a first end closest to the medium facing surface. The spin torque oscillator has a rear end farthest from the medium facing surface. The first end of the first insulating layer is located closer to the medium facing surface than the rear end of the spin torque oscillator is.
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公开(公告)号：US11514931B1
公开(公告)日：2022-11-29
申请号：US17677326
申请日：2022-02-22
申请人： Hironori Araki , Yoshitaka Sasaki , Tetsuhito Shinohara , Shigeki Tanemura , Kazuki Sato , Yoji Nomura , Yukinori Ikegawa , Tetsuya Roppongi
发明人： Hironori Araki , Yoshitaka Sasaki , Tetsuhito Shinohara , Shigeki Tanemura , Kazuki Sato , Yoji Nomura , Yukinori Ikegawa , Tetsuya Roppongi
摘要： A magnetic head includes a main pole, a trailing shield, and a spin torque oscillator. A top surface of the main pole includes a first inclined portion, a second inclined portion, and a third inclined portion arranged in order of closeness to a medium facing surface. Each of the first to third inclined portions has a front end closest to the medium facing surface and a rear end farthest from the medium facing surface. Each of the first to third inclined portions is inclined relative to the medium facing surface and a direction orthogonal to the medium facing surface so that its rear end is located forward relative to its front end in a direction of travel of a recording medium.
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公开(公告)号：US10803888B1
公开(公告)日：2020-10-13
申请号：US16574880
申请日：2019-09-18
申请人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Hironori Araki , Yoji Nomura , Tetsuya Roppongi , Atsushi Yamaguchi
发明人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Shigeki Tanemura , Hironori Araki , Yoji Nomura , Tetsuya Roppongi , Atsushi Yamaguchi
摘要： A manufacturing method for a magnetic head includes the steps of: forming a main pole; forming a spin torque oscillator; and forming a trailing shield. The step of forming the spin torque oscillator includes: a step of forming a layered film; a step of forming an interposition layer; a step of forming a mask; a first etching step of etching a portion of the interposition layer using the mask; a second etching step of etching a portion of the layered film using the mask and the interposition layer as an etching mask; a step of removing the interposition layer and the mask; and a patterning step of patterning the layered film into the spin torque oscillator.
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公开(公告)号：US10748559B1
公开(公告)日：2020-08-18
申请号：US16801399
申请日：2020-02-26
申请人： Hironori Araki , Yoshitaka Sasaki , Hiroyuki Ito , Yoji Nomura , Shigeki Tanemura , Kazuki Sato , Tetsuya Roppongi , Atsushi Yamaguchi
发明人： Hironori Araki , Yoshitaka Sasaki , Hiroyuki Ito , Yoji Nomura , Shigeki Tanemura , Kazuki Sato , Tetsuya Roppongi , Atsushi Yamaguchi
摘要： A magnetic head includes a main pole, a trailing shield, a spin torque oscillator, and a buffer layer. The buffer layer is interposed between the main pole and the spin torque oscillator. The spin torque oscillator has first and second side surfaces. The first and second side surfaces respectively form first and second angles with respect to a direction perpendicular to a top surface of a substrate. The first and second angles each fall within a range of 0° to 10°. The buffer layer has third and fourth side surfaces. The third side surface includes a first inclined portion forming a third angle greater than the first angle. The fourth side surface includes a second inclined portion forming a fourth angle greater than the second angle.
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公开(公告)号：US11380353B1
公开(公告)日：2022-07-05
申请号：US17313417
申请日：2021-05-06
申请人： Yoshitaka Sasaki , Shigeki Tanemura , Kazuki Sato , Yoji Nomura , Hironori Araki , Tetsuhito Shinohara
发明人： Yoshitaka Sasaki , Shigeki Tanemura , Kazuki Sato , Yoji Nomura , Hironori Araki , Tetsuhito Shinohara
摘要： A magnetic head includes a main pole, a trailing shield, a spin torque oscillator, first and second side shields, first and second gap films, and first and second guard films. The first gap film and the first guard film are interposed between the trailing shield and the first side shield. The second gap film and the second guard film are interposed between the trailing shield and the second side shield.
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7.发明授权公开(公告)号：US11410688B1
公开(公告)日：2022-08-09
申请号：US17347992
申请日：2021-06-15
申请人： Yoshitaka Sasaki , Hiroyuki Ito , Shigeki Tanemura , Hironori Araki , Yoji Nomura , Yukinori Ikegawa , Weihao Xu
发明人： Yoshitaka Sasaki , Hiroyuki Ito , Shigeki Tanemura , Hironori Araki , Yoji Nomura , Yukinori Ikegawa , Weihao Xu
IPC分类号： G11B11/105 , G11B5/127 , G11B7/1387 , G11B5/60 , G11B5/00 , G11B5/48
摘要： A thermally-assisted magnetic recording head includes a medium facing surface, a main pole, a waveguide, and a plasmon generator. A second metal layer of the plasmon generator includes a second front end facing the medium facing surface. A third metal layer of the plasmon generator includes a narrow portion located on the second metal layer. The narrow portion includes a front end face located in the medium facing surface and configured to generate near-field light from a surface plasmon, and a rear end opposite the front end face. The rear end is located farther from the medium facing surface than is the second front end.
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公开(公告)号：US10366712B1
公开(公告)日：2019-07-30
申请号：US15880458
申请日：2018-01-25
申请人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Hironori Araki , Yukinori Ikegawa , Yoji Nomura
发明人： Yoshitaka Sasaki , Hiroyuki Ito , Kazuki Sato , Hironori Araki , Yukinori Ikegawa , Yoji Nomura
摘要： A first side shield has a first sidewall and a second sidewall, and a second side shield has a third sidewall and a fourth sidewall. The first to fourth sidewalls have first to fourth edges, respectively, that are farthest from a top surface of a substrate. The distance between a rear end of the first edge and a rear end of the third edge in a track width direction is greater than the distance between a front end of the first edge and a front end of the third edge in the track width direction. The distance between the second edge and the fourth edge in the track width direction increases with increasing distance from the medium facing surface.
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公开(公告)号：US11664045B1
公开(公告)日：2023-05-30
申请号：US17677528
申请日：2022-02-22
CPC分类号： G11B5/3163 , G11B5/1278 , G11B5/3912 , H10N50/01 , H10N50/10 , H10N50/85
摘要： A manufacturing method for a magnetoresistive element includes: a step of forming a stack; a step of forming an insulating film to cover the stack; a step of forming an initial magnetic layer to cover the stack and the insulating film so that a thickness of the initial magnetic layer in a first direction is greater than a thickness of the stack in the first direction; a step of forming an organic material film on the initial magnetic layer; and an etching step of etching a part of the initial magnetic layer and the organic material film by ion beam etching so that the initial magnetic layer becomes a pair of magnetic layers.
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公开(公告)号：US11049516B1
公开(公告)日：2021-06-29
申请号：US17069527
申请日：2020-10-13
摘要： A near-field light generator includes a plasmon generator including a plasmon exciting portion on which a surface plasmon is excited, and a near-field transducer including a front end face that generates near-field light from the surface plasmon. The near-field transducer is formed of a first metal material. The plasmon generator includes a first portion formed of the first metal material and a second portion formed of a second metal material. The first portion is in contact with the near-field transducer. The second portion includes at least part of the plasmon exciting portion.
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