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公开(公告)号：US10014014B1
公开(公告)日：2018-07-03
申请号：US15622357
申请日：2017-06-14
CPC分类号： G11B5/3909 , G11B5/00826 , G11B5/00878 , G11B5/397 , G11B5/4893
摘要： An apparatus, according to one embodiment, includes a plurality of first circuits, each first circuit comprising a pair of terminals coupled to a first read transducer and a first parallel circuit. A terminal resistance of each first circuit is less than the resistance of the first read transducer thereof. A second circuit has a pair of terminals that are coupled to a second read transducer having a tunnel valve structure. An area of a tunnel barrier portion of the second read transducer is larger than an area of a tunnel barrier portion of each of the first read transducers. A resistivity of a tunnel barrier of each of the first read transducers is about the same as a resistivity of a tunnel barrier layer of the second read transducer. The terminal resistance of each first circuit is less than about five times a terminal resistance of the second circuit.
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12.发明申请公开(公告)号：US20180166096A1
公开(公告)日：2018-06-14
申请号：US15377790
申请日：2016-12-13
CPC分类号： G11B5/00817 , G11B5/3909 , G11B5/3948 , G11B5/397 , G11B5/584 , G11B5/5928
摘要： An apparatus according to one embodiment includes a first read transducer having a tunnel valve structure, and a second read transducer coupled to the first read transducer. The second read transducer has a tunnel valve structure as well, but the tunnel valve structure of the first read transducer has a different resistivity than the tunnel valve structure of the second read transducer. An apparatus according to another embodiment includes an array of first read transducers, each first read transducer having a tunnel valve structure. At least a second read transducer is coupled to the first read transducers, the second read transducer having a tunnel valve structure. The tunnel valve structure of the first read transducer has a different resistivity than the tunnel valve structure of the second read transducer.
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公开(公告)号：US09990944B1
公开(公告)日：2018-06-05
申请号：US15445877
申请日：2017-02-28
CPC分类号： G11B5/3912 , G11B5/00813 , G11B5/1278 , G11B5/3906 , G11B5/3909 , G11B5/3932 , G11B5/3958 , G11B15/46
摘要： An apparatus, according to one embodiment, includes: a tape head having: a write module, a read module, and a plurality of tunnel valve read transducers arranged in an array extending along the read module. Each of the tunnel valve read transducers includes: a sensor structure, an upper and lower magnetic shield, an upper conducting spacer layer between the sensor structure and the upper magnetic shield, a lower conducting spacer layer between the sensor structure and the lower magnetic shield, and electrically insulating layers opposite the sensor structure. The sensor structure includes a cap layer, a free layer, a tunnel barrier layer, a reference layer and antiferromagnetic layer. A height of the free layer measured in a direction perpendicular to a media bearing surface of the read module is less than a width of the free layer measured in a cross-track direction perpendicular to an intended direction of media travel.
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公开(公告)号：US09892747B2
公开(公告)日：2018-02-13
申请号：US15422322
申请日：2017-02-01
CPC分类号： G11B5/3912 , G11B5/00813 , G11B5/00826 , G11B5/1278 , G11B5/3106 , G11B5/3906
摘要： An apparatus according to one embodiment includes a transducer structure having a lower shield and/or an upper shield. A current-perpendicular-to-plane sensor is positioned adjacent the shield(s). An electrical lead layer is positioned between the sensor and the upper or lower shield. The electrical lead layer is in electrical communication with the sensor. A spacer layer is positioned between the electrical lead layer and the upper or lower shield. A conductivity of the electrical lead layer is higher than a conductivity of the spacer layer.
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公开(公告)号：US09495989B2
公开(公告)日：2016-11-15
申请号：US13760154
申请日：2013-02-06
发明人： Robert E. Fontana, Jr. , William J. Gallagher , Philipp Herget , Eugene J. O'Sullivan , Lubomyr T. Romankiw , Naigang Wang , Bucknell C. Webb
IPC分类号： B32B15/04 , G11B5/66 , C25D7/00 , C25D7/12 , C25D3/54 , C25D5/10 , C25D5/14 , C25D9/10 , H01F10/32 , C25D3/58 , C25D5/18 , C25D5/50
CPC分类号： H01F10/3231 , C25D3/54 , C25D3/58 , C25D5/10 , C25D5/14 , C25D5/18 , C25D5/50 , C25D7/001 , C25D7/123 , C25D9/08 , C25D9/10 , C25D17/001 , G11B5/66 , H01F3/02 , H01F10/3236 , H01F10/324 , H01F10/325 , H01F10/3254 , H01F41/02
摘要： A laminating structure includes a first magnetic layer, a second magnetic layer, a first spacer disposed between the first and second magnetic layers and a second spacer disposed on the second magnetic layer.
摘要翻译： 层叠结构包括第一磁性层，第二磁性层，设置在第一和第二磁性层之间的第一间隔件和设置在第二磁性层上的第二间隔件。
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公开(公告)号：US20150279546A1
公开(公告)日：2015-10-01
申请号：US14230116
申请日：2014-03-31
IPC分类号： H01F27/28
CPC分类号： H01F27/2804 , H01F17/0006 , H01F41/042 , H01F2017/0053 , H01F2017/0066 , H01F2027/2809
摘要： A thin film inductor with top and bottom pole pieces that are mechanically connected to each other at at least two via zones, to create a magnetically permeable yoke that defines at least one interior space. Enclosed portion(s) of a winding member pass through the interior space(s) of the yoke. The enclosed portion(s) of the winding member define an axial direction and a transverse direction. The pole pieces extend beyond the via zones in the axial and/or transverse direction. The extended pole pieces improve magnetic performance of the thin film inductor, by effectively moving pole piece edges away from locations of high magnetic flux density.
摘要翻译： 一种具有顶部和底部极片的薄膜电感器，其在至少两个通孔区域彼此机械连接，以形成限定至少一个内部空间的磁性可透过的磁轭。 绕组构件的封闭部分穿过轭的内部空间。 卷绕构件的封闭部分限定轴向方向和横向。 极片在轴向和/或横向上延伸超过通孔区域。 扩展的极片通过有效地将极片边缘远离高磁通密度的位置来提高薄膜电感器的磁性能。
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公开(公告)号：US10297275B2
公开(公告)日：2019-05-21
申请号：US15469322
申请日：2017-03-24
摘要： An apparatus according to one embodiment includes a module having an array of first read transducers each having a tunnel valve structure and a second read transducer coupled to the array of first read transducers, the second read transducer having a tunnel valve structure. The apparatus also includes a controller, and a cable coupling the read transducers to the controller, thereby forming a plurality of circuits extending from the controller, each circuit corresponding to one of the transducers. Resistances of the circuits are about the same.
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公开(公告)号：US10283147B2
公开(公告)日：2019-05-07
申请号：US15444160
申请日：2017-02-27
摘要： An apparatus, according to one embodiment, includes: an array of write transducers, each write transducer having: a first write pole having a pole tip extending from a media facing side of the first write pole, a second write pole having a pole tip extending from a media facing side of the second write pole, a nonmagnetic write gap between the pole tips of the write poles, and a high moment layer between the write gap and the pole tip of the second write pole, the high moment layer having a higher magnetic moment than a magnetic moment of the pole tip of the second write pole. Other systems, methods, and computer program products are described in additional embodiments.
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公开(公告)号：US09947348B1
公开(公告)日：2018-04-17
申请号：US15445861
申请日：2017-02-28
CPC分类号： G11B5/3912 , G11B5/00813 , G11B5/1278 , G11B5/235
摘要： An apparatus, according to one embodiment, includes: a transducer structure having: a lower shield, an upper shield above the lower shield, a current-perpendicular-to-plane sensor between the upper and lower shields, an electrical lead layer between the sensor and one of the shields, and a spacer layer between the electrical lead layer and the one of the shields. The upper and lower shields provide magnetic shielding. The electrical lead layer is in electrical communication with the sensor. A conductivity of the electrical lead layer is higher than a conductivity of the spacer layer. A width of the electrical lead layer in a cross-track direction is greater than the width of a free layer of the sensor.
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公开(公告)号：US09721597B2
公开(公告)日：2017-08-01
申请号：US15054071
申请日：2016-02-25
CPC分类号： G11B5/3912 , G11B5/11 , G11B5/39 , G11B5/3909 , G11B5/3932 , G11B5/3948 , G11B5/398 , G11B5/40
摘要： An apparatus according to one embodiment includes a transducer structure having: a lower shield having recesses in an upper surface thereof; an upper shield formed above the lower shield; a sensor between the upper and lower shields, the recesses being positioned on opposite sides of the sensor; and a first insulating layer in the recesses in the upper surface of the lower shield. An upper surface of the first insulating layer is coplanar with an uppermost portion of the upper surface of the lower shield. An apparatus according to another embodiment includes a transducer structure having: a lower shield having recesses in an upper surface thereof; an upper shield formed above the lower shield, the upper shield having recesses in a lower surface thereof; a sensor between the shields, the recesses being positioned on opposite sides of the sensor; and insulating layers in the recesses in the shields.
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