公开(公告)号：US20100053819A1

公开(公告)日：2010-03-04

申请号：US12230781

申请日：2008-09-04

申请人： Kei Hirata ,  Takayasu Kanaya ,  Kosuke Tanaka ,  Shinji Hara

发明人： Kei Hirata ,  Takayasu Kanaya ,  Kosuke Tanaka ,  Shinji Hara

IPC分类号： G11B5/33

CPC分类号： B82Y10/00 ,  B82Y25/00 ,  G11B5/3909 ,  G11B5/3912 ,  G11B5/3932 ,  G11B2005/3996

摘要： The invention is devised to provide a method of manufacturing a thin film magnetic head including a magnetoresistive element having higher reading performance. In manufacturing the thin film magnetic head, after forming an MR element 15, a pair of magnetic domain controlling layers 16 are formed by stacking a buffer layer 161, a magnetic bias layer 162 and a cap layer 163 in this order on both sides, in a track-width direction, of the MR element 15 via an insulating layer 14 respectively. Then, a cap layer 17 is formed so as to cover the upper surface of the MR element 15 and connect the pair of cap-layers 163. After that, a gap adjustment layer 18 and a top shielding layer 19 are formed in order so as to cover the pair of cap layers 163 and the cap layer 17, thereby a read head section 10 is completed. In this manner, the upper surface of the magnetic bias layer 162 is in contact only with the cap-layer 17 and the cap-layer 163, which are made of a material excellent in crystal lattice compatibility with the magnetic bias layer 162. As a result, the coercive force of the magnetic bias layer 162 can be increased. What is more, roughness of the undersurface of the top shielding layer 19 can be improved because of the presence of the cap layer 17.

摘要翻译： 本发明旨在提供一种制造包括具有更高读取性能的磁阻元件的薄膜磁头的方法。 在制造薄膜磁头时，在形成MR元件15之后，通过在两侧依次层叠缓冲层161，磁偏置层162和盖层163，形成一对磁畴控制层16 分别经由绝缘层14的MR元件15的轨道宽度方向。 然后，形成盖层17，以覆盖MR元件15的上表面并连接一对盖层163.之后，依次形成间隙调整层18和顶部屏蔽层19，以便 覆盖一对盖层163和盖层17，从而完成读头部10。 以这种方式，磁偏置层162的上表面仅与盖层17和盖层163接触，盖层17和盖层163由与磁偏置层162的晶格相容性优异的材料制成。作为 结果，可以增加磁偏置层162的矫顽力。 此外，由于存在盖层17，所以可以提高顶部屏蔽层19的下表面的粗糙度。

公开(公告)号：US20110262632A1

公开(公告)日：2011-10-27

申请号：US13042264

申请日：2011-03-07

申请人： Takeo Kagami ,  Kosuke Tanaka ,  Shinji Hara ,  Takayasu Kanaya ,  Nobuyoshi Morizumi

发明人： Takeo Kagami ,  Kosuke Tanaka ,  Shinji Hara ,  Takayasu Kanaya ,  Nobuyoshi Morizumi

IPC分类号： B05D5/12 ,  B05D1/36

CPC分类号： G11B5/3909 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3906 ,  G11B5/3932 ,  G11B2005/3996

摘要： A magnetoresistive effect (MR) element, a thin-film magnetic head having the MR element, a method for manufacturing the MR element, and a method for manufacturing the thin-film magnetic head are disclosed. The MR element, which uses electric current in a direction perpendicular to layer planes, includes a lower electrode layer, a MR multilayered structure formed on the lower electrode layer, a magnetic domain controlling bias layer that is disposed on both sides of the MR multilayered structure along the track-width direction and is made of a material at least partially including an hcp structure, a metal layer made of a material having a bcc structure formed on the magnetic domain controlling bias layer and the MR multilayered structure to cover the magnetic domain controlling bias layer and the MR multilayered structure, and an upper electrode layer formed on the metal layer.

摘要翻译： 公开了磁阻效应（MR）元件，具有MR元件的薄膜磁头，MR元件的制造方法和制造薄膜磁头的方法。 在垂直于层平面的方向上使用电流的MR元件包括下电极层，形成在下电极层上的MR多层结构，设置在MR多层结构的两侧的磁畴控制偏置层 沿着轨道宽度方向并且由至少部分地包括hcp结构的材料制成，由在磁畴控制偏置层上形成的具有bcc结构的材料制成的金属层和MR多层结构以覆盖磁畴控制 偏置层和MR多层结构，以及形成在金属层上的上电极层。

公开(公告)号：US08724264B2

公开(公告)日：2014-05-13

申请号：US12230781

申请日：2008-09-04

申请人： Kei Hirata ,  Takayasu Kanaya ,  Kosuke Tanaka ,  Shinji Hara

发明人： Kei Hirata ,  Takayasu Kanaya ,  Kosuke Tanaka ,  Shinji Hara

IPC分类号： G11B5/33 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/39

CPC分类号： B82Y10/00 ,  B82Y25/00 ,  G11B5/3909 ,  G11B5/3912 ,  G11B5/3932 ,  G11B2005/3996

摘要： A thin film magnetic head including a magnetoresistive element (MR) having higher reading performance. In manufacturing the thin film magnetic head, after forming an MR element, a pair of magnetic domain controlling layers are formed by stacking a buffer layer, a magnetic bias layer and a first cap layer in this order on both sides, in a track-width direction, of the MR element via an insulating layer, respectively. Then, a second cap layer is formed to cover the upper surface of the MR element and connect the pair of cap-layers. Then, a gap adjustment layer and a top shielding layer are formed to cover the pair of first cap layers and the second cap layer, completing a read head section.

摘要翻译： 包括具有较高读取性能的磁阻元件（MR）的薄膜磁头。 在制造薄膜磁头时，在形成MR元件之后，通过在两侧依次层叠缓冲层，磁偏置层和第一盖层而形成一对磁畴控制层，轨道宽度 MR元件的方向分别经由绝缘层。 然后，形成第二盖层以覆盖MR元件的上表面并连接一对盖层。 然后，形成间隙调整层和顶部屏蔽层以覆盖一对第一盖层和第二盖层，从而完成读取头部。

公开(公告)号：US20080030908A1

公开(公告)日：2008-02-07

申请号：US11812311

申请日：2007-06-18

申请人： Takeo Kagami ,  Kosuke Tanaka ,  Shinji Hara ,  Takayasu Kanaya ,  Nobuyoshi Morizumi

发明人： Takeo Kagami ,  Kosuke Tanaka ,  Shinji Hara ,  Takayasu Kanaya ,  Nobuyoshi Morizumi

IPC分类号： G11B5/127

CPC分类号： G11B5/3909 ,  B82Y10/00 ,  B82Y25/00 ,  G11B5/3906 ,  G11B5/3932 ,  G11B2005/3996

摘要： A magnetoresistive effect (MR) element, a thin-film magnetic head having the MR element, a method for manufacturing the MR element, and a method for manufacturing the thin-film magnetic head are disclosed. The MR element, which uses electric current in a direction perpendicular to layer planes, includes a lower electrode layer, a MR multilayered structure formed on the lower electrode layer, a magnetic domain controlling bias layer that is disposed on both sides of the MR multilayered structure along the track-width direction and is made of a material at least partially including an hcp structure, a metal layer made of a material having a bcc structure formed on the magnetic domain controlling bias layer and the MR multilayered structure to cover the magnetic domain controlling bias layer and the MR multilayered structure, and an upper electrode layer formed on the metal layer.

摘要翻译： 公开了磁阻效应（MR）元件，具有MR元件的薄膜磁头，MR元件的制造方法和制造薄膜磁头的方法。 在垂直于层平面的方向上使用电流的MR元件包括下电极层，形成在下电极层上的MR多层结构，设置在MR多层结构的两侧的磁畴控制偏置层 沿着轨道宽度方向并且由至少部分地包括hcp结构的材料制成，由在磁畴控制偏置层上形成的具有bcc结构的材料制成的金属层和MR多层结构以覆盖磁畴控制 偏置层和MR多层结构，以及形成在金属层上的上电极层。

公开(公告)号：US20110176398A1

公开(公告)日：2011-07-21

申请号：US12688367

申请日：2010-01-15

申请人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Takahiko Izawa ,  Katsuki Kurihara

发明人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Takahiko Izawa ,  Katsuki Kurihara

IPC分类号： G11B11/00

CPC分类号： G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head includes a waveguide through which a light for exciting surface plasmon propagates, a near-field optical device configured to be coupled with the light in a surface plasmon mode and to emit near-field light from a near-field-light-generating end surface that forms a portion of an opposed-to-medium surface, and a magnetic pole for generating write field from its end on the opposed-to-medium surface side. The near-field optical device includes a contact-to-waveguide surface having a contact to the waveguide, and a propagation edge provided on a side opposite to the contact-to-waveguide surface, extending to the near-field-light-generating end surface, and configured to propagate there on the surface plasmon excited by the light. A gap between a near-field optical device-opposed surface of the magnetic pole and the propagation edge of the near-field optical device is larger at a section far from the end on the opposed-to-medium surface side than that at a section near the on the opposed-to-medium surface side.

摘要翻译： 热辅助磁记录头包括用于激发表面等离子体激元的光传播的波导，被配置成以表面等离子体激元模式与光耦合的近场光学装置，并且从近场发射近场光 形成相对中间表面的一部分的光产生端面，以及用于从其相对中间表面侧的端部产生写入场的磁极。 近场光学器件包括与波导接触的接触到波导表面，以及设置在与波导表面相对的一侧的传播边缘，延伸到近场光产生端 并且被配置为在由光激发的表面等离子体上传播。 磁场的近场光学器件相对表面与近场光学器件的传播边缘之间的间隙在远离相对于介质表面侧的端部的部分处比在部分 靠近对面 - 中等表面侧。

公开(公告)号：US08077558B1

公开(公告)日：2011-12-13

申请号：US12785897

申请日：2010-05-24

申请人： Takeshi Tsutsumi ,  Daisuke Miyauchi ,  Tetsuya Roppongi ,  Kosuke Tanaka ,  Susumu Aoki ,  Takahiko Izawa ,  Tsutomu Chou

发明人： Takeshi Tsutsumi ,  Daisuke Miyauchi ,  Tetsuya Roppongi ,  Kosuke Tanaka ,  Susumu Aoki ,  Takahiko Izawa ,  Tsutomu Chou

IPC分类号： G11B11/00

CPC分类号： G11B5/3163 ,  B82Y20/00 ,  G02B5/008 ,  G02B6/1226 ,  G11B5/1278 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B7/1384 ,  G11B7/1387 ,  G11B2005/0021 ,  Y10T29/49032

摘要： A plasmon generator has an outer surface including a plasmon exciting part that faces an evanescent light generating surface of a waveguide. The outer surface further includes first and second inclined surfaces that increase in distance from each other with increasing distance from the plasmon exciting part, and a front end face. The front end face has first and second portions that are connected to each other into a V-shape. The first portion includes a first side lying at an end of the first inclined surface. The second portion includes a second side lying at an end of the second inclined surface. An angle formed between a lower part of the first side and a lower part of the second side is smaller than that formed between an upper part of the first side and an upper part of the second side.

摘要翻译： 等离子体发生器具有外表面，其包括面向波导的ev逝光产生表面的等离子体激元部分。 外表面还包括第一和第二倾斜表面，该第一和第二倾斜表面随距距等离子体激元部分的距离增加而彼此间隔开，并且前端面。 前端面具有彼此连接成V形的第一和第二部分。 第一部分包括位于第一倾斜表面的端部的第一侧。 第二部分包括位于第二倾斜表面的端部的第二侧。 形成在第一侧的下部和第二侧的下部之间的角度小于在第一侧的上部和第二侧的上部之间形成的角度。

公开(公告)号：US20110058272A1

公开(公告)日：2011-03-10

申请号：US12557078

申请日：2009-09-10

申请人： Daisuke Miyauchi ,  Tsutomu Chou ,  Kosuke Tanaka ,  Susumu Aoki ,  Tetsuya Roppongi ,  Katsuki Kurihara

发明人： Daisuke Miyauchi ,  Tsutomu Chou ,  Kosuke Tanaka ,  Susumu Aoki ,  Tetsuya Roppongi ,  Katsuki Kurihara

IPC分类号： G11B5/02

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

摘要： Provided is a thermally-assisted magnetic recording head capable of setting the near-field light (NFL-) emission point to be sufficiently close to the write-field-generating portion. The head comprises a magnetic pole, a waveguide propagating light, and a NFL-generator coupled with the light in surface plasmon mode. The NFL-generator comprises a propagation edge extending to the NFL-generating end surface, at least a portion of the propagation edge being opposed to the waveguide with a distance, and the magnetic pole has a surface contact with a surface portion of the NFL-generator including no propagation edge. Therefore, the distance between the magnetic-pole end surface and the NFL-generating end surface becomes zero. The propagation edge is not contacted with the magnetic pole. Accordingly, the surface plasmon can propagate along on the propagation edge without being absorbed by the pole. Thus, the NFL-emission point is ensured to be at the end point of the propagation edge.

摘要翻译： 提供了一种能够将近场光（NFL-）发射点设定为足够靠近写入场产生部分的热辅助磁记录头。 磁头包括磁极，波导传播光和与表面等离子体激发光模式耦合的NFL发生器。 NFL发生器包括延伸到NFL生成端面的传播边缘，传播边缘的至少一部分与波导相距一定距离，并且磁极与NFL-发生端面的表面部分具有表面接触， 发生器不包括传播边。 因此，磁极端面与产生NFL的端面之间的距离为零。 传播边缘不与磁极接触。 因此，表面等离子体激元可以沿着传播边缘传播而不被极吸收。 因此，确保NFL发射点处于传播边缘的终点。

公开(公告)号：US08325567B2

公开(公告)日：2012-12-04

申请号：US12557078

申请日：2009-09-10

申请人： Daisuke Miyauchi ,  Tsutomu Chou ,  Kosuke Tanaka ,  Susumu Aoki ,  Tetsuya Roppongi ,  Katsuki Kurihara

发明人： Daisuke Miyauchi ,  Tsutomu Chou ,  Kosuke Tanaka ,  Susumu Aoki ,  Tetsuya Roppongi ,  Katsuki Kurihara

IPC分类号： G11B11/00

CPC分类号： G11B5/314 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

摘要： Provided is a thermally-assisted magnetic recording head capable of setting the near-field light (NFL-) emission point to be sufficiently close to the write-field-generating portion. The head comprises a magnetic pole, a waveguide propagating light, and a NFL-generator coupled with the light in surface plasmon mode. The NFL-generator comprises a propagation edge extending to the NFL-generating end surface, at least a portion of the propagation edge being opposed to the waveguide with a distance, and the magnetic pole has a surface contact with a surface portion of the NFL-generator including no propagation edge. Therefore, the distance between the magnetic-pole end surface and the NFL-generating end surface becomes zero. The propagation edge is not contacted with the magnetic pole. Accordingly, the surface plasmon can propagate along on the propagation edge without being absorbed by the pole. Thus, the NFL-emission point is ensured to be at the end point of the propagation edge.

摘要翻译： 提供了一种能够将近场光（NFL-）发射点设定为足够靠近写入场产生部分的热辅助磁记录头。 磁头包括磁极，波导传播光和与表面等离子体激发光模式耦合的NFL发生器。 NFL发生器包括延伸到NFL生成端面的传播边缘，传播边缘的至少一部分与波导相距一定距离，并且磁极与NFL-发生端面的表面部分具有表面接触， 发生器不包括传播边。 因此，磁极端面与产生NFL的端面之间的距离为零。 传播边缘不与磁极接触。 因此，表面等离子体激元可以沿着传播边缘传播而不被极吸收。 因此，确保NFL发射点处于传播边缘的终点。

公开(公告)号：US08208349B2

公开(公告)日：2012-06-26

申请号：US12688367

申请日：2010-01-15

申请人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Takahiko Izawa ,  Katsuki Kurihara

发明人： Kosuke Tanaka ,  Daisuke Miyauchi ,  Susumu Aoki ,  Tetsuya Roppongi ,  Tsutomu Chou ,  Takahiko Izawa ,  Katsuki Kurihara

IPC分类号： G11B11/00

CPC分类号： G11B5/3116 ,  G11B5/314 ,  G11B5/6088 ,  G11B2005/0005 ,  G11B2005/0021

摘要： A thermally-assisted magnetic recording head includes a waveguide, a near-field optical device which emits near-field light from a near-field-light-generating end surface that forms a portion of an opposed-to-medium surface, and a magnetic pole generates write field from its end on the opposed-to-medium surface side. The near-field optical device includes a contact-to-waveguide surface, and a propagation edge configured to propagate there on the surface plasmon excited by the light. A gap between a near-field optical device-opposed surface of the magnetic pole and the propagation edge of the near-field optical device is larger at a section far from the end on the opposed-to-medium surface side than that at a section near the opposed-to-medium surface side.

摘要翻译： 热辅助磁记录头包括波导，近场光学装置，其从形成相对中间表面的一部分的近场光产生端面发射近场光，以及磁场 极点从其相对到中等表面侧的端部产生写入场。 近场光学器件包括接触到波导表面，以及配置成在由光激发的表面等离子体激元上传播的传播边缘。 磁场的近场光学器件相对表面与近场光学器件的传播边缘之间的间隙在远离相对于介质表面侧的端部的部分处比在部分 靠近相对中的表面侧。

公开(公告)号：US08570843B2

公开(公告)日：2013-10-29

申请号：US13402318

申请日：2012-02-22

申请人： Kei Hirata ,  Kosuke Tanaka ,  Tsutomu Chou ,  Susumu Aoki ,  Makoto Isogai ,  Tetsuya Roppongi

发明人： Kei Hirata ,  Kosuke Tanaka ,  Tsutomu Chou ,  Susumu Aoki ,  Makoto Isogai ,  Tetsuya Roppongi

IPC分类号： G11B11/00

CPC分类号： G11B5/313 ,  G11B5/3116 ,  G11B5/314 ,  G11B5/3146 ,  G11B5/6088 ,  G11B2005/0021

摘要： The present invention provides a thermally assisted magnetic head with improved recording performance. The thermally assisted magnetic head includes a recording element and a near-field light generating element. The recording element includes a main pole appearing on a medium-facing surface, and a bit inversion starting region intended to be a maximum recording magnetic field generating position is formed at a leading edge of the main pole. The near-field light generating element is located on a leading side of the main pole and capable of creating a heating spot due to a near-field light on a near-field light generating end face appearing on the medium-facing surface. The bit inversion starting region is located within one-half of a diameter of the heating spot from a center of the heating spot.

摘要翻译： 本发明提供了具有改进的记录性能的热辅助磁头。 热辅助磁头包括记录元件和近场光产生元件。 记录元件包括出现在面向中间的表面上的主极，并且在主极的前缘形成旨在成为最大记录磁场产生位置的位反转起始区。 近场光产生元件位于主极的前导侧，并且能够在出现在面向中间的表面上的近场光产生端面上产生由于近场光产生的加热点。 位反转起始区域位于加热点的直径从加热点的中心的一半的范围内。