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公开(公告)号：US11881237B1
公开(公告)日：2024-01-23
申请号：US17456440
申请日：2021-11-24
发明人： Muhammad Asif Bashir , Edward Hin Pong Lee , Amanda Baer , Aron Pentek , Zhigang Bai , Yunfei Ding , James Terrence Olson , Alexander Goncharov , Petrus Antonius Van Der Heijden
CPC分类号： G11B5/315 , G11B5/11 , G11B5/1278 , G11B5/235 , G11B5/314 , G11B5/3116 , G11B5/3133 , G11B5/3146 , G11B5/21 , G11B2005/0024
摘要： The present disclosure is generally related to a magnetic recording device comprising a magnetic recording head having a current flow in a cross-track direction around a main pole. The magnetic recording device comprises a main pole disposed between a trailing shield, a leading shield, and side shields. A trailing gap is disposed between the main pole and the trailing shield. A hot seed layer is disposed between the trailing gap and the trailing shield. A first insulation layer is disposed between the hot seed layer and the trailing shield, where the first insulation layer contacts the side shields. A second insulation layer is disposed between the main pole and leading shield, where the second insulation layer contacts the side shields. The first and second insulation layers direct the current through the side shields and across the main pole in a cross-track direction.
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公开(公告)号：US20230335154A1
公开(公告)日：2023-10-19
申请号：US18336085
申请日：2023-06-16
CPC分类号： G11B5/21 , G11B5/3146 , G11B5/1278
摘要： According to one embodiment, a magnetic head includes first and second magnetic poles, and a stacked body provided between the first and second magnetic poles. The stacked body includes a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the second magnetic pole, a first nonmagnetic layer provided between the first and second magnetic layers, a second nonmagnetic layer provided between the second magnetic layer and the second magnetic pole, and a third nonmagnetic layer provided between the first magnetic pole and the first magnetic layer. The first magnetic layer includes a first element including at least one of Fe, Co, or Ni. The second magnetic layer includes (Fe100-xCox)100-yEy. A second element E includes at least one selected from the group consisting of Cr, V, Mn, Yi, and Sc. The first magnetic layer does not include the second element.
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公开(公告)号：US11792932B2
公开(公告)日：2023-10-17
申请号：US17247469
申请日：2020-12-11
发明人： Ivan Salkovic , Gerald Weidinger , Johannes Stahr
IPC分类号： H05K1/05 , H05K3/06 , H01F27/06 , G11B5/21 , G11B5/127 , G11B5/147 , G01D5/14 , H01Q7/06 , H05K1/16 , H05K3/10 , H05K3/46
CPC分类号： H05K1/165 , H01F27/06 , H05K3/101 , H05K3/4652 , H01F2027/065 , H05K2201/086 , H05K2201/10265
摘要： A method of manufacturing a component carrier includes providing a stack with electrically conductive layer structures and at least one electrically insulating layer structure, embedding a magnetic inlay in the stack, and forming an electrically conductive coil structure at least partially based on the electrically conductive layer structures and surrounding at least part of the magnetic inlay.
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公开(公告)号：US20230267961A1
公开(公告)日：2023-08-24
申请号：US17884623
申请日：2022-08-10
发明人： Tazumi NAGASAWA , Yuji NAKAGAWA , Naoyuki NARITA , Masayuki TAKAGISHI , Tomoyuki MAEDA , Ryo OSAMURA
CPC分类号： G11B21/02 , G11B5/21 , G11B5/3146
摘要： According to one embodiment, a magnetic head includes first and second magnetic poles, a stacked body, and first to third terminals. The stacked body is provided between the first and second magnetic poles. The stacked body includes a first magnetic layer, a second magnetic layer between the first magnetic layer and the second magnetic pole, a third magnetic layer between the second magnetic layer and the second magnetic pole, a fourth magnetic layer between the third magnetic layer and the second magnetic pole, a first nonmagnetic layer between the first magnetic pole and the first magnetic layer, a second nonmagnetic layer between the first and second magnetic layers, a third nonmagnetic layer between the second and third magnetic layers, a fourth nonmagnetic layer between the third and fourth magnetic layers and a fifth nonmagnetic layer between the fourth magnetic layer and the second magnetic pole.
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公开(公告)号：US11721359B2
公开(公告)日：2023-08-08
申请号：US17586880
申请日：2022-01-28
CPC分类号： G11B5/21 , G11B5/1278 , G11B5/3146
摘要： According to one embodiment, a magnetic head includes first and second magnetic poles, and a stacked body provided between the first and second magnetic poles. The stacked body includes a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the second magnetic pole, a first nonmagnetic layer provided between the first and second magnetic layers, a second nonmagnetic layer provided between the second magnetic layer and the second magnetic pole, and a third nonmagnetic layer provided between the first magnetic pole and the first magnetic layer. The first magnetic layer includes a first element including at least one of Fe, Co, or Ni. The second magnetic layer includes (Fe100-xCox)100-yEy. A second element E includes at least one selected from the group consisting of Cr, V, Mn, Yi, and Sc. The first magnetic layer does not include the second element.
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公开(公告)号：US20230144429A1
公开(公告)日：2023-05-11
申请号：US17981112
申请日：2022-11-04
申请人： TDK CORPORATION
CPC分类号： H01F10/329 , G11B5/21
摘要： A magnetoresistance effect element includes a first ferromagnetic layer, a second ferromagnetic layer, and a nonmagnetic layer. The nonmagnetic layer is between the first ferromagnetic layer and the second ferromagnetic layer. At least one of the first ferromagnetic layer and the second ferromagnetic layer is a Heusler alloy layer. The nonmagnetic layer includes a first region and a second region in a plane. Both of the first region and the second region are formed of a metal. The second region is different in constituent material from the first region. The second region has a crystal structure of a body-centered cubic lattice structure (bcc).
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公开(公告)号：US20220383898A1
公开(公告)日：2022-12-01
申请号：US17586880
申请日：2022-01-28
摘要： According to one embodiment, a magnetic head includes first and second magnetic poles, and a stacked body provided between the first and second magnetic poles. The stacked body includes a first magnetic layer, a second magnetic layer provided between the first magnetic layer and the second magnetic pole, a first nonmagnetic layer provided between the first and second magnetic layers, a second nonmagnetic layer provided between the second magnetic layer and the second magnetic pole, and a third nonmagnetic layer provided between the first magnetic pole and the first magnetic layer. The first magnetic layer includes a first element including at least one of Fe, Co, or Ni. The second magnetic layer includes (Fe100-xCox)100-yEy. A second element E includes at least one selected from the group consisting of Cr, V, Mn, Yi, and Sc. The first magnetic layer does not include the second element.
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公开(公告)号：US10360931B2
公开(公告)日：2019-07-23
申请号：US16113094
申请日：2018-08-27
发明人： Masaya Ohtake , Akihiko Takeo , Gaku Koizumi , Yusuke Tomoda
摘要： A magnetic recording apparatus includes a disk-shaped recording medium with a magnetic recording layer, and a recording head that magnetically writes data onto the magnetic recording layer and includes a main magnetic pole, a write shield facing the main magnetic pole and positioned with a writing gap disposed between the main magnetic pole and the write shield, and a magnetic flux control layer disposed inside the write gap between the main magnetic pole and the writing shield. The magnetic flux control layer includes a first layer including a first metal and contacting one of the main magnetic pole and the writing shield, a second control layer, and a third layer including a second metal and contacting the other one of the main magnetic pole and the writing shield. The second control layer includes a magnetic metal and contacts the first layer and the third layer.
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公开(公告)号：US20180240479A1
公开(公告)日：2018-08-23
申请号：US15900144
申请日：2018-02-20
申请人： FUJIFILM Corporation
发明人： Norihito KASADA , Eiki OZAWA
CPC分类号： G11B5/3909 , G11B5/00813 , G11B5/00817 , G11B5/21 , G11B5/70 , G11B5/78
摘要： The magnetic tape device includes a magnetic tape; and a TMR head as a reproducing head, in which a center line average surface roughness Ra measured regarding a surface of the magnetic layer of the magnetic tape is equal to or smaller than 2.0 nm, a logarithmic decrement acquired by a pendulum viscoelasticity test performed regarding the surface of the magnetic layer is equal to or smaller than 0.050, and ΔSFD in a longitudinal direction of the magnetic tape calculated by Expression 1: ΔSFD=SFD25° C.−SFD−190° C. is equal to or smaller than 0.50, wherein, in Expression 1, the SFD25° C. is a switching field distribution SFD measured in a longitudinal direction of the magnetic tape at a temperature of 25° C., and the SFD−190° C. is a switching field distribution SFD measured in a longitudinal direction of the magnetic tape at a temperature of −190° C.
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公开(公告)号：US09721591B1
公开(公告)日：2017-08-01
申请号：US15097182
申请日：2016-04-12
发明人： Feng Liu , Zhigang Bai , Peng Luo , Jinqiu Zhang , Ming Sun , Xiaoyu Yang , Yifan Zhang , Xiaojun Zhang , Ming Jiang
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/1475 , G11B5/21 , G11B5/3146
摘要： A magnetic write apparatus has a media-facing surface (MFS) and includes an auxiliary pole, coil(s) and a main pole having a pole tip and a yoke. The pole tip occupies part of the MFS. The yoke has a yoke length measured from the MFS in a yoke direction perpendicular to the MFS. The yoke length is less than four microns. The main pole has a total length in the yoke direction and a width in a cross-track direction. The main pole is continuous along the total length. The aspect ratio of the main pole is the total length divided by the width and exceeds one. The main pole includes surface(s) having a nonzero acute flare angle from the MFS. The auxiliary pole is adjacent to the main pole and recessed from the MFS by not more than 1.05 micron. The coil(s) energizes the main pole and have not more than two turns.
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