公开(公告)号：US07061726B2

公开(公告)日：2006-06-13

申请号：US10667232

申请日：2003-09-18

申请人： Shigekazu Ohtomo ,  Hiroshi Fukui ,  Sunao Yonekawa ,  Yoji Maruyama ,  Tadayuki Iwakura

发明人： Shigekazu Ohtomo ,  Hiroshi Fukui ,  Sunao Yonekawa ,  Yoji Maruyama ,  Tadayuki Iwakura

IPC分类号： G11B5/127

CPC分类号： G11B5/3916

摘要： A magnetic material having a low coefficient of thermal expansion of 11.5×10−6/K or less is used for forming at least one of a lower shield or an upper shield. A laminated film comprising a layer of the magnetic material having a low coefficient of thermal expansion of 11.5×10−6/K or less, and an 80 wt % NiFe alloy layer, is used for forming at least one of the lower shield and the upper shield. Thus, the thin film magnetic head having reduced after-record noise and reduced thermal protrusion can be obtained.

摘要翻译： 使用具有11.5×10 -6 / K或更小的热膨胀系数低的磁性材料来形成下屏蔽或上屏蔽中的至少一个。 使用包含具有11.5×10 -6 / K以下的低热膨胀系数的磁性材料层和80重量％的NiFe合金层的层叠膜，以形成至少一个 的下屏蔽和上屏蔽。 因此，可以获得具有降低的记录后噪声和降低的热突起的薄膜磁头。

公开(公告)号：US20050122622A1

公开(公告)日：2005-06-09

申请号：US10956976

申请日：2004-09-30

申请人： Yoji Maruyama ,  Tadayuki Iwakura ,  Makoto Morijiri ,  Shigekazu Ohtomo ,  Ichiro Ohdake

发明人： Yoji Maruyama ,  Tadayuki Iwakura ,  Makoto Morijiri ,  Shigekazu Ohtomo ,  Ichiro Ohdake

IPC分类号： G11B5/31 ,  G11B5/147

CPC分类号： G11B5/147

摘要： In one embodiment, a thin-film magnetic head with a write head has a lower core member made of a soft magnetic film, a planar upper core member made of a soft magnetic film, and a coil conductor positioned between the lower and upper core members. The rear end is equipped with a magnetic body, which at least magnetically joins the lower and upper core members. A magnetic pole piece is in contact with the lower core member and positioned toward an air bearing surface, which faces a recording medium. A first nonmagnetic film is provided between a pedestal magnetic pole piece and upper core member. The write head is structured so that the first nonmagnetic film constitutes a write gap. A second nonmagnetic film is provided above or below the first nonmagnetic film. The edge of the second nonmagnetic film is retracted from the air bearing surface. The upper core member's flare point is positioned toward the air bearing surface rather than the edge of the second nonmagnetic film.

摘要翻译： 在一个实施例中，具有写头的薄膜磁头具有由软磁膜制成的下芯构件，由软磁膜制成的平面上芯构件和位于下芯体和上芯体之间的线圈导体 。 后端配备有至少磁性地连接下部和上部芯部构件的磁性体。 磁极片与下芯部件接触并朝向面向记录介质的空气轴承表面定位。 第一非磁性膜设置在基座磁极片和上芯部件之间。 写头被构造成使得第一非磁性膜构成写入间隙。 在第一非磁性膜的上方或下方设置第二非磁性膜。 第二非磁性膜的边缘从空气支承表面缩回。 上芯体的扩口位于空气轴承表面而不是第二非磁性膜的边缘。

公开(公告)号：US07576952B2

公开(公告)日：2009-08-18

申请号：US10956976

申请日：2004-09-30

申请人： Yoji Maruyama ,  Tadayuki Iwakura ,  Makoto Morijiri ,  Shigekazu Ohtomo ,  Ichiro Ohdake

发明人： Yoji Maruyama ,  Tadayuki Iwakura ,  Makoto Morijiri ,  Shigekazu Ohtomo ,  Ichiro Ohdake

IPC分类号： G11B5/147 ,  G11B5/127

CPC分类号： G11B5/147

摘要： In one embodiment, a thin-film magnetic head with a write head has a lower core member made of a soft magnetic film, a planar upper core member made of a soft magnetic film, and a coil conductor positioned between the lower and upper core members. The rear end is equipped with a magnetic body, which at least magnetically joins the lower and upper core members. A magnetic pole piece is in contact with the lower core member and positioned toward an air bearing surface, which faces a recording medium. A first nonmagnetic film is provided between a pedestal magnetic pole piece and upper core member. The write head is structured so that the first nonmagnetic film constitutes a write gap. A second nonmagnetic film is provided above or below the first nonmagnetic film. The edge of the second nonmagnetic film is retracted from the air bearing surface. The upper core member's flare point is positioned toward the air bearing surface rather than the edge of the second nonmagnetic film.

摘要翻译： 在一个实施例中，具有写头的薄膜磁头具有由软磁膜制成的下芯构件，由软磁膜制成的平面上芯构件和位于下芯体和上芯体之间的线圈导体 。 后端配备有至少磁性地连接下部和上部芯部构件的磁性体。 磁极片与下芯部件接触并朝向面向记录介质的空气轴承表面定位。 第一非磁性膜设置在基座磁极片和上芯部件之间。 写头被构造成使得第一非磁性膜构成写入间隙。 在第一非磁性膜的上方或下方设置第二非磁性膜。 第二非磁性膜的边缘从空气支承表面缩回。 上芯体的扩口位于空气轴承表面而不是第二非磁性膜的边缘。

公开(公告)号：US07551395B2

公开(公告)日：2009-06-23

申请号：US11492378

申请日：2006-07-24

申请人： Yoji Maruyama ,  Kazue Kudo ,  Ichiro Ohdake ,  Tadayuki Iwakura

发明人： Yoji Maruyama ,  Kazue Kudo ,  Ichiro Ohdake ,  Tadayuki Iwakura

IPC分类号： G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/11 ,  G11B5/3116 ,  G11B5/3146

摘要： A magnetic head with a narrow track width angle and of excellent mass productivity is provided for attaining a large capacity magnetic disk drive. In an embodiment, a perpendicular recording magnetic head includes: a first non-magnetic film and a first soft magnetic film stacked on the trailing side of a main magnetic pole piece for constituting a gap film; a second non-magnetic layer in contact with the end face of the first non-magnetic layer on both sides of the main magnetic pole piece; a third soft magnetic film in contact with the second non-magnetic layer on both sides of the main magnetic pole piece; and a second soft magnetic film in contact with the first soft magnetic film and the third soft magnetic film on the trailing side of the main magnetic pole.

摘要翻译： 为了获得大容量磁盘驱动器，提供了具有窄轨道宽度角和优异的批量生产率的磁头。 在一个实施例中，垂直记录磁头包括：第一非磁性膜和第一软磁膜，堆叠在用于构成间隙膜的主磁极片的后侧; 与主磁极片两侧的第一非磁性层的端面接触的第二非磁性层; 与主磁极片两侧的第二非磁性层接触的第三软磁性膜; 以及与主磁极的后侧上的第一软磁膜和第三软磁膜接触的第二软磁膜。

公开(公告)号：US20080198507A1

公开(公告)日：2008-08-21

申请号：US12070155

申请日：2008-02-15

申请人： Yoji Maruyama ,  Tadayuki Iwakura ,  Kimitoshi Etoh ,  Hiromi Shiina ,  Kazue Kudo

发明人： Yoji Maruyama ,  Tadayuki Iwakura ,  Kimitoshi Etoh ,  Hiromi Shiina ,  Kazue Kudo

IPC分类号： G11B5/17

CPC分类号： G11B5/1278 ,  G11B5/112 ,  G11B5/3116 ,  G11B5/3146 ,  G11B5/315 ,  G11B5/3163

摘要： Embodiments of the present invention help to suppress broadening of a write field of a main pole of a perpendicular recording head and realize high-quality write operation. According to one embodiment, a main pole of a write head extends to an air bearing surface or a medium-facing surface and has an inverted trapezoid in cross-section. First soft magnetic films called side shields are separately disposed through a nonmagnetic film on both sides of the main pole. The air bearing surface side end of the first soft magnetic film is provided to recede from the air bearing surface. The first soft magnetic film and the main pole are formed in the same layer. A second soft magnetic film called a trailing shield is provided above the main pole on the air bearing surface side via a nonmagnetic film.

摘要翻译： 本发明的实施例有助于抑制垂直记录头的主极的写入场的扩展，并且实现高质量的写入操作。 根据一个实施例，写入头的主极延伸到空气轴承表面或中等的表面，并且具有横截面的倒梯形。 称为侧屏的第一软磁膜通过主极两侧的非磁性膜分开设置。 第一软磁性膜的空气轴承面侧端设置为从空气轴承面退回。 第一软磁膜和主极形成在同一层中。 被称为后挡板的第二软磁膜通过非磁性膜设置在空气支承面侧的主极上方。

公开(公告)号：US20070019327A1

公开(公告)日：2007-01-25

申请号：US11492378

申请日：2006-07-24

申请人： Yoji Maruyama ,  Kazue Kudo ,  Ichiro Ohdake ,  Tadayuki Iwakura

发明人： Yoji Maruyama ,  Kazue Kudo ,  Ichiro Ohdake ,  Tadayuki Iwakura

IPC分类号： G11B5/147

CPC分类号： G11B5/1278 ,  G11B5/11 ,  G11B5/3116 ,  G11B5/3146

摘要： A magnetic head with a narrow track width angle and of excellent mass productivity is provided for attaining a large capacity magnetic disk drive. In an embodiment, a perpendicular recording magnetic head includes: a first non-magnetic film and a first soft magnetic film stacked on the trailing side of a main magnetic pole piece for constituting a gap film; a second non-magnetic layer in contact with the end face of the first non-magnetic layer on both sides of the main magnetic pole piece; a third soft magnetic film in contact with the second non-magnetic layer on both sides of the main magnetic pole piece; and a second soft magnetic film in contact with the first soft magnetic film and the third soft magnetic film on the trailing side of the main magnetic pole.

摘要翻译： 为了获得大容量磁盘驱动器，提供了具有窄轨道宽度角和优异的批量生产率的磁头。 在一个实施例中，垂直记录磁头包括：第一非磁性膜和第一软磁膜，堆叠在用于构成间隙膜的主磁极片的后侧; 与主磁极片两侧的第一非磁性层的端面接触的第二非磁性层; 与主磁极片两侧的第二非磁性层接触的第三软磁性膜; 以及与主磁极的后侧上的第一软磁膜和第三软磁膜接触的第二软磁膜。

公开(公告)号：US20090290257A1

公开(公告)日：2009-11-26

申请号：US12469291

申请日：2009-05-20

申请人： Wataru Kimura ,  Tadayuki Iwakura ,  Yoji Maruyama

发明人： Wataru Kimura ,  Tadayuki Iwakura ,  Yoji Maruyama

IPC分类号： G11B5/127

CPC分类号： G11B5/3116 ,  G11B5/1278

摘要： To enable high density recording, improvements to the distribution of the magnetic field originating from a perpendicular recording magnetic head with a narrow track width, high resolution, and narrow erase width were made. According to one embodiment, a perpendicular recording magnetic head is provided with a write head which comprises a main pole layer, an auxiliary pole layer, a first subsidiary pole layer, a second subsidiary pole layer, a pedestal-like soft magnetic layer and a coil. Trailing and leading throat heights are controlled so as to make the trailing throat height shorter than the leading throat height wherein the trailing throat height is the throat height of the main pole layer's medium-tracking trailing side (top side as viewed in the film thickness direction) while the leading throat height is the throat height of the main pole layer's medium-tracking leading side (bottom side as viewed in the film thickness direction).

摘要翻译： 为了实现高密度记录，进行了具有窄轨迹宽度，高分辨率和窄擦除宽度的垂直记录磁头的磁场分布的改进。 根据一个实施例，垂直记录磁头设置有写头，写头包括主极层，辅助极层，第一辅助极层，第二辅助极层，基座状软磁性层和线圈 。 拖尾和前导喉部的高度被控制以使拖尾喉咙的高度比先前的喉咙高度短，其中后喉高度是主极层的介质跟踪后侧（在膜厚度方向上看的顶侧） ），而主极层的介质跟踪前侧（从膜厚度方向观察的底侧）的主喉部高度为喉部高度。

公开(公告)号：US20080231994A1

公开(公告)日：2008-09-25

申请号：US12079223

申请日：2008-03-24

申请人： Wataru Kimura ,  Tadayuki Iwakura ,  Yoji Maruyama

发明人： Wataru Kimura ,  Tadayuki Iwakura ,  Yoji Maruyama

IPC分类号： G11B5/60

CPC分类号： G11B5/1278 ,  G11B5/112 ,  G11B5/3116 ,  G11B5/3146

摘要： Embodiments of the present invention provide a perpendicular recording magnetic head having a narrow track width, high recording magnetic field intensity, and a good recording magnetic field distribution. According to one embodiment, a perpendicular recording magnetic head includes a read section and a write section. The write section includes a main magnetic pole layer, a lower sub magnetic pole layer, an upper sub magnetic pole layer, a pedestal magnetic layer, and a coil conductor generating a magnetic flux in the main magnetic pole layer. The write section further includes lower and upper auxiliary magnetic pole layers disposed on a leading side and a trailing side, respectively, relative to a medium moving direction, adjacent to the main magnetic pole layer. The lower and upper auxiliary magnetic pole layers are retracted from an air bearing surface. The upper auxiliary magnetic pole layer is retracted from the air bearing surface less than the lower auxiliary magnetic pole layer.

摘要翻译： 本发明的实施例提供一种具有窄轨道宽度，高记录磁场强度和良好记录磁场分布的垂直记录磁头。 根据一个实施例，垂直记录磁头包括读取部分和写入部分。 写入部分包括主磁极层，下部子磁极层，上部子磁极层，基座磁性层和在主磁极层中产生磁通的线圈导体。 写入部分还包括相对于主磁极层相对于介质移动方向分别设置在前侧和后侧的下和上辅助磁极层。 下辅助磁极层和上辅助磁极层从空气轴承表面缩回。 上辅助磁极层从空气轴承表面缩回小于下辅助磁极层。

公开(公告)号：US20070188921A1

公开(公告)日：2007-08-16

申请号：US11707804

申请日：2007-02-15

申请人： Masafumi Mochizuki ,  Kimitoshi Etoh ,  Yoji Maruyama ,  Hiroshi Fukui

发明人： Masafumi Mochizuki ,  Kimitoshi Etoh ,  Yoji Maruyama ,  Hiroshi Fukui

IPC分类号： G11B5/147

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/1871 ,  G11B5/3163

摘要： Embodiments in accordance with the present invention provide a magnetic head in which broadening of the effective track width can be decreased without reducing the write-field intensity and a variation of the track width can be decreased. A main pole consists of a pole tip having a part which provides the write track-width and a yoke part recessed from the air beating surface in the element height direction, and the pole tip consists of a pole tip at the trailing side where the width in the track-width direction is large and a pole tip at the leading side where the width in the track width direction is small. Moreover, the throat height of the pole tip at the trailing side is made greater than the throat height of the pole tip at the leading side.

摘要翻译： 根据本发明的实施例提供一种磁头，其中可以在不降低写入场强度的情况下降低有效磁道宽度的扩大，并且可以减小磁道宽度的变化。 主极包括具有提供写入轨道宽度的部分的极尖和在元件高度方向上从空气打浆表面凹陷的轭部，并且极尖由在后侧的极尖组成，其中宽度 在轨道宽度方向上较大，并且在轨道宽度方向上的宽度小的前端的极尖。 此外，使尾端在后侧的喉部高度大于前端的极尖的喉部高度。

公开(公告)号：US07848053B2

公开(公告)日：2010-12-07

申请号：US11707804

申请日：2007-02-15

申请人： Masafumi Mochizuki ,  Kimitoshi Etoh ,  Yoji Maruyama ,  Hiroshi Fukui

发明人： Masafumi Mochizuki ,  Kimitoshi Etoh ,  Yoji Maruyama ,  Hiroshi Fukui

IPC分类号： G11B5/147

CPC分类号： G11B5/3116 ,  G11B5/1278 ,  G11B5/1871 ,  G11B5/3163

摘要： Embodiments in accordance with the present invention provide a magnetic head in which broadening of the effective track width can be decreased without reducing the write-field intensity and a variation of the track width can be decreased. A main pole consists of a pole tip having a part which provides the write track-width and a yoke part recessed from the air beating surface in the element height direction, and the pole tip consists of a pole tip at the trailing side where the width in the track-width direction is large and a pole tip at the leading side where the width in the track width direction is small. Moreover, the throat height of the pole tip at the trailing side is made greater than the throat height of the pole tip at the leading side.

摘要翻译： 根据本发明的实施例提供一种磁头，其中可以在不降低写入场强度的情况下降低有效磁道宽度的扩大，并且可以减小磁道宽度的变化。 主极包括具有提供写入轨道宽度的部分的极尖和在元件高度方向上从空气打浆表面凹陷的轭部，并且极尖由在后侧的极尖组成，其中宽度 在轨道宽度方向上较大，并且在轨道宽度方向上的宽度小的前端的极尖。 此外，使尾端在后侧的喉部高度大于前端的极尖的喉部高度。