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公开(公告)号：US20060067006A1
公开(公告)日：2006-03-30
申请号：US11235084
申请日：2005-09-27
CPC分类号： G11B5/35
摘要： A magnetic head includes a read head including a read element and two layers of shields sandwiching the read element therebetween, and a write head including a main pole, a return yoke, and an exciting coil, in which at least one of each of the shields and the return yoke has an area of a bottom surface at least 1.2 times as large as an area of a top surface.
摘要翻译： 磁头包括读头，其包括读取元件和夹在其间的读取元件的两层屏蔽件，以及包括主极，返回轭和励磁线圈的写入头，其中每个屏蔽件 并且返回轭具有与顶表面的面积的至少1.2倍的底面的面积。
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2.发明授权公开(公告)号：US08508885B2
公开(公告)日：2013-08-13
申请号：US13218196
申请日：2011-08-25
CPC分类号： G11B5/3146 , G11B5/314 , G11B2005/0024
摘要： According to one embodiment, a magnetic head includes a main pole configured to apply a recording magnetic field, a return pole opposed to a trailing side of the main pole across a write gap and configured to return magnetic flux from the main pole, a coil configured to excite magnetic flux in the main pole, a spin-torque oscillator located between respective facing surfaces of the return pole and an end portion of the main pole on the recording-medium side and configured to produce a high-frequency magnetic field, a current source configured to apply current to the spin-torque oscillator through the return and main poles, and a nonmagnetic layer provided in at least one of the poles and extending from a facing surface of the at least one of the poles, which faces the spin-torque oscillator, in a direction across the facing surface.
摘要翻译： 根据一个实施例，磁头包括被配置为施加记录磁场的主极，跨越写入间隙与主极的后侧相对的返回极，并且被配置为从主极返回磁通量，线圈配置 激励主极中的磁通量，位于回转极的相应相对表面和记录介质侧的主极的端部之间的自旋扭矩振荡器，并且被配置为产生高频磁场，电流 源极，被配置为通过返回和主极将电流施加到自旋扭矩振荡器;以及设置在至少一个极上的非磁性层，并且从面对旋转轴的至少一个极的面向表面延伸， 扭矩振荡器在朝向相对表面的方向上。
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3.发明申请公开(公告)号：US20120262821A1
公开(公告)日：2012-10-18
申请号：US13296004
申请日：2011-11-14
CPC分类号： G11B5/314 , G11B5/235 , G11B2005/0024
摘要： According to one embodiment, a magnetic recording head includes a main pole configured to apply a recording magnetic field perpendicular to a recording medium, a trailing-shield pole opposed to the main pole with a recording gap therebetween, a high-frequency oscillator between the main pole and the trailing-shield pole in the recording gap, configured to produce a high-frequency magnetic field, a magnetic seed layer between the main pole and the high-frequency oscillator and in contact with the main pole, and a highly oriented magnetic layer of a soft magnetic material superposed on the magnetic seed layer between the main pole and the high-frequency oscillator and in contact with the high-frequency oscillator.
摘要翻译： 根据一个实施例，磁记录头包括被配置为施加垂直于记录介质的记录磁场的主极，与主极相对的后屏蔽极，其间具有记录间隙，在主体之间的高频振荡器 磁极和后屏蔽极在记录间隙中，被配置为产生高频磁场，主极和高频振荡器之间的磁性种子层，并与主极接触，并且高取向磁性层 叠置在主极与高频振荡器之间的磁性种子层上并与高频振荡器接触的软磁性材料。
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公开(公告)号：US20120134046A1
公开(公告)日：2012-05-31
申请号：US13218196
申请日：2011-08-25
CPC分类号： G11B5/3146 , G11B5/314 , G11B2005/0024
摘要： According to one embodiment, a magnetic head includes a main pole configured to apply a recording magnetic field, a return pole opposed to a trailing side of the main pole across a write gap and configured to return magnetic flux from the main pole, a coil configured to excite magnetic flux in the main pole, a spin-torque oscillator located between respective facing surfaces of the return pole and an end portion of the main pole on the recording-medium side and configured to produce a high-frequency magnetic field, a current source configured to apply current to the spin-torque oscillator through the return and main poles, and a nonmagnetic layer provided in at least one of the poles and extending from a facing surface of the at least one of the poles, which faces the spin-torque oscillator, in a direction across the facing surface.
摘要翻译： 根据一个实施例，磁头包括被配置为施加记录磁场的主极，跨越写入间隙与主极的后侧相对的返回极，并且被配置为从主极返回磁通量，线圈配置 激励主极中的磁通量，位于回转极的相应相对表面和记录介质侧的主极的端部之间的自旋扭矩振荡器，并且被配置为产生高频磁场，电流 源极，被配置为通过返回和主极将电流施加到自旋扭矩振荡器;以及设置在至少一个极上的非磁性层，并且从面对旋转轴的至少一个极的面向表面延伸， 扭矩振荡器在朝向相对表面的方向上。
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公开(公告)号：US20110242701A1
公开(公告)日：2011-10-06
申请号：US13016687
申请日：2011-01-28
CPC分类号： G11B5/1278 , B82Y10/00 , G11B5/02 , G11B5/314 , G11B5/3146 , G11B5/746 , G11B5/82 , G11B2005/0024
摘要： According to one embodiment, a magnetic head includes a main pole configured to apply a perpendicular recording magnetic field to a recording layer of a recording medium, a return pole opposed to the trailing side of the main pole with a write gap therebetween and configured to reflux magnetic flux from the main pole to form a magnetic circuit in conjunction with the main pole, a coil configured to excite magnetic flux in the magnetic circuit includes the main pole and the return pole, a plurality of high-frequency oscillatory elements individually interposed between the main pole and the return pole, includes a plurality of magnetic films different in magnetic resonance frequency, and configured to individually apply high-frequency magnetic fields to the recording medium, and an electrical circuit configured to energize the high-frequency oscillatory elements.
摘要翻译： 根据一个实施例，磁头包括：主极，被配置为向记录介质的记录层施加垂直记录磁场;与主极的后侧相对的返回极，其间具有写入间隙，并且被配置为回流 来自主极的磁通量与主极结合形成磁路，构成为激励磁路中的磁通量的线圈包括主极和返回极，多个高频振荡元件分别插入在 主极和返回极包括不同于磁共振频率的多个磁膜，并且被配置为分别向记录介质施加高频磁场，以及电路，其被配置为对高频振荡元件通电。
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6.发明授权Recording head with dual coil/dual shield arrangement and high frequency oscillator 有权记录头采用双线圈/双屏蔽排列和高频振荡器公开(公告)号：US08810961B2
公开(公告)日：2014-08-19
申请号：US13548922
申请日：2012-07-13
申请人： Tomoko Taguchi , Yusuke Tomoda
发明人： Tomoko Taguchi , Yusuke Tomoda
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3123 , G11B19/247 , G11B2005/0024
摘要： According to one embodiment, a recording head includes a main pole, a trailing shield including a first connecting portion and a second connecting portion, and configured to form together with the main pole a first magnetic core, a leading shield including a first connecting portion connected to the main pole through a magnetic material and an end portion opposing to the end portion of the main pole through a non-magnetic material, and configured to form together with the main pole a second magnetic core, and first and second coils wound around the first and second magnetic cores, and a connection terminal configured to flow a current through the main pole, non-magnetic conductive layer, and trailing shield.
摘要翻译： 根据一个实施例，记录头包括主极，后屏蔽，包括第一连接部分和第二连接部分，并且被配置为与主极一起形成第一磁芯，所述前屏蔽包括第一连接部分连接 通过非磁性材料通过磁性材料和与主极端部相对的端部连接到主极，并且被配置为与主极一起形成第二磁芯，以及缠绕在主极上的第一和第二线圈 第一和第二磁芯，以及被配置为使电流流经主极，非磁性导电层和后屏蔽的连接端子。
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7.发明授权Magnetic recording head configured to reduce the degradation of recorded signals and disk device including the same 有权磁记录头被配置为减少记录信号的劣化和包括其的盘装置公开(公告)号：US08773818B2
公开(公告)日：2014-07-08
申请号：US13607048
申请日：2012-09-07
申请人： Tomoko Taguchi , Takuya Matsumoto
发明人： Tomoko Taguchi , Takuya Matsumoto
IPC分类号： G11B5/127
CPC分类号： G11B5/314 , G11B5/1278 , G11B5/23 , G11B5/3146 , G11B2005/0024
摘要： A magnetic recording head includes a main magnetic pole generating a recording magnetic field, a trailing shield, a recording coil generating a magnetic field and a high frequency oscillator. The trailing shield includes a magnetic region including a gap side end surface facing a write gap and a nonmagnetic film arranged in the vicinity of the write gap in the trailing shield, and within a plane including track width direction centers of the main magnetic pole and the high frequency oscillator and being perpendicular to a recording layer of a recording medium, a film thickness of the nonmagnetic film along a track moving direction is substantially equivalent to or more than a half of a distance from the gap side end surface to the nonmagnetic film.
摘要翻译： 磁记录头包括产生记录磁场的主磁极，尾屏蔽，产生磁场的记录线圈和高频振荡器。 尾部屏蔽包括包括面向写入间隙的间隙侧端面和布置在后屏蔽中的写入间隙附近的非磁性膜的磁性区域，并且在包括主磁极的轨道宽度方向中心和 高频振荡器并且垂直于记录介质的记录层，非磁性膜沿轨道移动方向的膜厚基本上等于或大于从间隙侧端面到非磁性膜的距离的一半。
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8.发明授权Recording head with high-frequency oscillator and bi-layer main pole height/width arrangement 有权录音头采用高频振荡器和双层主极高/宽布置公开(公告)号：US08705204B2
公开(公告)日：2014-04-22
申请号：US13591012
申请日：2012-08-21
IPC分类号： G11B5/31
CPC分类号： G11B5/3116 , G11B2005/0002
摘要： According to one embodiment, a main pole of a recording head includes a first magnetic pole layer and a second magnetic pole layer laminated on the trailing side of the first magnetic pole layer. The first magnetic pole layer includes a tapered portion and a first tip portion. The second magnetic pole layer includes a tapered portion and a second tip portion. A width in a track direction of the second tip portion is smaller than that of the first tip portion. The high-frequency oscillator is between the second tip portion and the trailing shield and includes a width in the track direction substantially equal to the width in the track direction of the second tip portion, and a height of the first tip portion is taller than that of the second tip portion.
摘要翻译： 根据一个实施例，记录头的主极包括层叠在第一磁极层的后侧上的第一磁极层和第二磁极层。 第一磁极层包括锥形部分和第一末端部分。 第二磁极层包括锥形部分和第二尖端部分。 第二前端部的轨道方向的宽度小于第一前端部的宽度。 所述高频振荡器位于所述第二前端部与所述后屏蔽之间，并且包括所述轨道方向上的宽度大致等于所述第二前端部的轨道方向的宽度，所述第一前端部的高度高于所述第二前端部的高度。 的第二尖端部分。
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公开(公告)号：US20120182646A1
公开(公告)日：2012-07-19
申请号：US13431004
申请日：2012-03-27
申请人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
发明人： Tomoko Taguchi , Tomomi Funayama , Yuka Aoyagi , Katsuhiko Koui
CPC分类号： G11B5/3143 , G11B5/11 , G11B5/1278 , G11B5/3116 , G11B5/315
摘要： According to one embodiment, a perpendicular magnetic recording head includes a main pole which generates a recording magnetic field, a return pole which forms a closed magnetic circuit for the recording magnetic field, and a side shield magnetically spaced from the main pole in a cross-track direction in which a point on a trailing edge of the side shield which is closest to the main pole is positioned on a leading side of a trailing edge of the main pole.
摘要翻译： 根据一个实施例，垂直磁记录头包括产生记录磁场的主极，形成用于记录磁场的闭合磁路的返回极，以及在横截面中与主极磁隔离的侧屏蔽， 轨道方向，其中最靠近主极的侧护板的后缘上的点位于主杆的后缘的前侧。
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公开(公告)号：US20110242694A1
公开(公告)日：2011-10-06
申请号：US12984531
申请日：2011-01-04
申请人： Tomoko Taguchi
发明人： Tomoko Taguchi
CPC分类号： G11B5/3146 , G11B5/1278 , G11B5/3123 , G11B2005/0005
摘要： According to one embodiment, a magnetic head for perpendicular recording includes a first magnetic core includes a main pole configured to produce a recording magnetic field, and a return pole configured to reflux magnetic flux from the main pole to form a magnetic circuit in conjunction with the main pole, a first coil configured to excite magnetic flux in the magnetic circuit, side shields arranged individually on opposite sides of the main pole transversely relative to a track so as to be magnetically separated from the main pole and formed integrally with the return pole, a second magnetic core configured to form a physically closed magnetic path, a part of which comprises the return pole, and a second coil wound around the second magnetic core and configured to excite magnetic flux in the closed magnetic path.
摘要翻译： 根据一个实施例，用于垂直记录的磁头包括：第一磁芯，包括被配置为产生记录磁场的主极;以及返回极，其被配置为从主极返回磁通量，以形成磁路， 主极，被配置为激励磁路中的磁通量的第一线圈，相对于轨道横向地分别设置在主极的相对侧上的侧屏蔽，以与主极磁性分离并与返回极一体地形成， 第二磁芯，被配置为形成物理闭合的磁路，其一部分包括所述返回极;以及第二线圈，缠绕在所述第二磁芯上并被配置为激发所述闭合磁路中的磁通量。
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