公开(公告)号：US5404259A

公开(公告)日：1995-04-04

申请号：US966354

申请日：1992-10-26

申请人： Nobuyuki Ishiwata ,  Toshiyuki Okumura ,  Haruo Urai ,  Mitsuo Tamura ,  Masataka Konno

发明人： Nobuyuki Ishiwata ,  Toshiyuki Okumura ,  Haruo Urai ,  Mitsuo Tamura ,  Masataka Konno

IPC分类号： C01G53/00 ,  C04B35/46 ,  G11B5/10 ,  G11B5/105 ,  G11B5/127 ,  G11B5/255 ,  G11B5/147

CPC分类号： G11B5/10 ,  G11B5/105 ,  Y10S428/90

摘要： In order to improve a wear resistance and recording and reproducing properties of a magnetic head which has a magnetic core having a magnetic gap and a penetrated hole, a pair of reinforcing members holding the magnetic core therebetween, each having an opening corresponding to the penetrated hole, and a winding wound onto the magnetic core and the reinforcing members through the penetrated hole and the opening, each of the reinforcing member is a non-magnetic substrate which is made of a ceramic material essentially consisting of 2-30 weight % CaO, 2-50 weight % TiO.sub.2, and 30-80 weight % NiO and having an average grain size of 2 .mu.m or less. Alternatively, another ceramic is used which essentially consists of 2-30 weight % CaO, 2-50 weight % TiO.sub.2, 30-80 weight % NiO, and 0.2-1 weight % Al.sub.2 O.sub.3, and having an average grain size of 2 .mu.m or less, excluding zero.

摘要翻译： 为了提高具有具有磁隙和贯通孔的磁芯的磁头的耐磨性和记录再现特性，一对保持其间的磁芯的加强构件各自具有对应于穿透孔的开口 以及通过穿透孔和开口缠绕在磁芯和加强构件上的绕组，每个加强构件是非磁性基底，其由陶瓷材料制成，该陶瓷材料基本上由2-30重量％的CaO，2 -50重量％的TiO 2和30〜80重量％的NiO，平均粒径为2μm以下。 或者，使用另外的陶瓷，其基本上由2-30重量％的CaO，2-50重量％的TiO 2，30-80重量％的NiO和0.2-1重量％的Al 2 O 3组成，平均粒径为2微米， 少，不包括零。

公开(公告)号：US07239482B2

公开(公告)日：2007-07-03

申请号：US11333897

申请日：2006-01-18

申请人： Shinsaku Saitho ,  Haruo Urai ,  Nobuyuki Ishiwata ,  Kiyotaka Shimabayashi ,  Yoshihiro Nonaka ,  Tamaki Toba

发明人： Shinsaku Saitho ,  Haruo Urai ,  Nobuyuki Ishiwata ,  Kiyotaka Shimabayashi ,  Yoshihiro Nonaka ,  Tamaki Toba

IPC分类号： G11B5/147

CPC分类号： G11B5/3967 ,  G11B5/3116 ,  G11B5/313

摘要： A thin-film magnetic head is constituted by forming a lower shielding layer, a read gap layer holding an MR magnetosensitive element, a common pole layer, and a write gap layer in order on an insulating substrate, forming a first flattening layer, a coil pattern layer, and a second flattening layer laminated in order on the write gap layer excluding the vicinity of an ABS plane, and forming an upper pole layer on the write gap layer and the second flattening layer nearby an ABS plane. A concave portion is formed on the common pole layer at a position separated from the ABS plane, the concave portion is filled with a nonmagnetic body, and the gap depth between the upper pole layer and the common pole layer is determined by the concave portion.

摘要翻译： 薄膜磁头通过在绝缘基板上依次形成下屏蔽层，保持MR磁敏元件，公共极层和写间隙层的读取间隙层，形成第一平坦化层，线圈 图案层和除了ABS平面附近的写间隙层上依次层叠的第二平坦化层，在ABS平面附近的写间隙层和第二平坦化层上形成上极层。 在与ABS平面分离的位置上的公共极层上形成有凹部，凹部填充有非磁性体，并且上极层和公共极层之间的间隙深度由凹部决定。

公开(公告)号：US06804088B1

公开(公告)日：2004-10-12

申请号：US09743521

申请日：2001-01-11

申请人： Yoshihiro Nonaka ,  Haruo Urai ,  Nobuyuki Ishiwata ,  Kiyotaka Shimabayashi ,  Tetsuhiro Suzuki ,  Shinsaku Saitho ,  Hiroaki Tachibana ,  Tamaki Toba

发明人： Yoshihiro Nonaka ,  Haruo Urai ,  Nobuyuki Ishiwata ,  Kiyotaka Shimabayashi ,  Tetsuhiro Suzuki ,  Shinsaku Saitho ,  Hiroaki Tachibana ,  Tamaki Toba

IPC分类号： G11B5147

CPC分类号： G11B5/3163 ,  G11B5/3109 ,  G11B5/3116

摘要： A thin film magnetic head includes a recording pole layer that is divided into a tip portion, a wide rear portion, a flare portion, and a yoke portion as viewed from the air bearing surface (ABS). The tip portion and the wide rear portion directly contact a write gap layer. Part of the wide rear portion has a greater width that the tip portion. The wide rear portion is provided between the tip portion and the flare portion to reduce magnetic reluctance. Accordingly, it is possible to improve the pattern accuracy of the tip portion width by providing the flare portion, which reflects a large quantity of light, far from the ABS, while preventing an increase of the magnetic reluctance.

摘要翻译： 薄膜磁头包括从空气轴承表面（ABS）观察时分为尖端部分，宽后部部分，扩口部分和轭部分的记录极层。 尖端部分和宽后部直接接触写间隙层。 宽后部的一部分具有较大的尖端部分的宽度。 宽的后部设置在尖端部分和扩口部分之间以减小磁阻。 因此，通过在防止磁阻增加的同时设置反射大量光的喇叭部，能够提高尖端部宽度的图案精度。

公开(公告)号：US07230794B2

公开(公告)日：2007-06-12

申请号：US11388695

申请日：2006-03-24

申请人： Shinsaku Saitho ,  Haruo Urai ,  Nobuyuki Ishiwata ,  Kiyotaka Shimabayashi ,  Yoshihiro Nonaka ,  Tamaki Toba

发明人： Shinsaku Saitho ,  Haruo Urai ,  Nobuyuki Ishiwata ,  Kiyotaka Shimabayashi ,  Yoshihiro Nonaka ,  Tamaki Toba

IPC分类号： G11B5/147

CPC分类号： G11B5/3967 ,  G11B5/3116 ,  G11B5/313

摘要： A thin-film magnetic head is constituted by forming a lower shielding layer, a read gap layer holding an MR magnetosensitive element, a common pole layer, and a write gap layer in order on an insulating substrate, forming a first flattening layer, a coil pattern layer, and a second flattening layer laminated in order on the write gap layer excluding the vicinity of an ABS plane, and forming an upper pole layer on the write gap layer and the second flattening layer nearby an ABS plane. A concave portion is formed on the common pole layer at a position separated from the ABS plane, the concave portion is filled with a nonmagnetic body, and the gap depth between the upper pole layer and the common pole layer is determined by the concave portion.

摘要翻译： 薄膜磁头通过在绝缘基板上依次形成下屏蔽层，保持MR磁敏元件，公共极层和写间隙层的读取间隙层，形成第一平坦化层，线圈 图案层和除了ABS平面附近的写间隙层上依次层叠的第二平坦化层，在ABS平面附近的写间隙层和第二平坦化层上形成上极层。 在与ABS平面分离的位置上的公共极层上形成有凹部，凹部填充有非磁性体，并且上极层和公共极层之间的间隙深度由凹部决定。

公开(公告)号：US20060164758A1

公开(公告)日：2006-07-27

申请号：US11388695

申请日：2006-03-24

申请人： Shinsaku Saitho ,  Haruo Urai ,  Nobuyuki Ishiwata ,  Kiyotaka Shimabayashi ,  Yoshihiro Nonaka ,  Tamaki Toba

发明人： Shinsaku Saitho ,  Haruo Urai ,  Nobuyuki Ishiwata ,  Kiyotaka Shimabayashi ,  Yoshihiro Nonaka ,  Tamaki Toba

IPC分类号： G11B5/147

CPC分类号： G11B5/3967 ,  G11B5/3116 ,  G11B5/313

摘要： A thin-film magnetic head is constituted by forming a lower shielding layer, a read gap layer holding an MR magnetosensitive element, a common pole layer, and a write gap layer in order on an insulating substrate, forming a first flattening layer, a coil pattern layer, and a second flattening layer laminated in order on the write gap layer excluding the vicinity of an ABS plane, and forming an upper pole layer on the write gap layer and the second flattening layer nearby an ABS plane. A concave portion is formed on the common pole layer at a position separated from the ABS plane, the concave portion is filled with a nonmagnetic body, and the gap depth between the upper pole layer and the common pole layer is determined by the concave portion.

公开(公告)号：US06597543B1

公开(公告)日：2003-07-22

申请号：US09317542

申请日：1999-05-24

申请人： Shinsaku Saitho ,  Haruo Urai ,  Nobuyuki Ishiwata ,  Kiyotaka Shimabayashi ,  Yoshihiro Nonaka ,  Tamaki Toba

发明人： Shinsaku Saitho ,  Haruo Urai ,  Nobuyuki Ishiwata ,  Kiyotaka Shimabayashi ,  Yoshihiro Nonaka ,  Tamaki Toba

IPC分类号： G11B531

CPC分类号： G11B5/3967 ,  G11B5/3116 ,  G11B5/313

摘要： A thin-film magnetic head is constituted by forming a lower shielding layer, a read gap layer holding an MR magnetosensitive element, a common pole layer, and a write gap layer in order on an insulating substrate, forming a first flattening layer, a coil pattern layer, and a second flattening layer laminated in order on the write gap layer excluding the vicinity of an ABS plane, and forming an upper pole layer on the write gap layer and the second flattening layer nearby an ABS plane. A concave portion is formed on the common pole layer at a position separated from the ABS plane, the concave portion is filled with a nonmagnetic body, and the gap depth between the upper pole layer and the common pole layer is determined by the concave portion.

摘要翻译： 薄膜磁头通过在绝缘基板上依次形成下屏蔽层，保持MR磁敏元件，公共极层和写间隙层的读取间隙层，形成第一平坦化层，线圈 图案层和除了ABS平面附近的写间隙层上依次层叠的第二平坦化层，在ABS平面附近的写间隙层和第二平坦化层上形成上极层。 在与ABS平面分离的位置上的公共极层上形成有凹部，凹部填充有非磁性体，并且上极层和公共极层之间的间隙深度由凹部决定。

公开(公告)号：US5736264A

公开(公告)日：1998-04-07

申请号：US35411

申请日：1993-03-23

申请人： Nobuyuki Ishiwata ,  Yoshio Takeshima ,  Takahiro Korenari ,  Haruo Urai

发明人： Nobuyuki Ishiwata ,  Yoshio Takeshima ,  Takahiro Korenari ,  Haruo Urai

IPC分类号： C22C38/00 ,  C22C38/14 ,  G11B5/127 ,  G11B5/147 ,  G11B5/187 ,  G11B5/23 ,  G11B5/31 ,  H01F10/13 ,  H01F10/14 ,  G11B5/66

CPC分类号： G11B5/1878 ,  G11B5/1274 ,  G11B5/147 ,  G11B5/3109 ,  H01F10/131 ,  H01F10/265 ,  Y10S428/90 ,  Y10T428/115

摘要： A magnetic head of the present invention has a magnetic core and a substrate for supporting the magnetic core. The magnetic core has a magnetic layer which is of a soft magnetic alloy mainly composed of FeTaN. The composition of the alloy meets 72.ltoreq.x.ltoreq.82, 5.ltoreq.y.ltoreq.15, 10.ltoreq.z.ltoreq.15 by atomic percent, where the alloy is indicated to be Fe.sub.x M.sub.y N.sub.z. The magnetic layer contains crystal grains of body-centered cubic structure, and each diameter of said crystal grains is less than 10 nm. The crystal grains have lattice planes which are orientated at random.

摘要翻译： 本发明的磁头具有磁芯和用于支撑磁芯的基板。 磁芯具有主要由FeTaN组成的软磁性合金的磁性层。 该合金的组成按原子百分数满足72％，其中合金表示为FexMyNz。 磁性层包含体心立方结构的晶粒，所述晶粒的每个直径小于10nm。 晶粒具有随机取向的晶格面。

公开(公告)号：US20060114608A1

公开(公告)日：2006-06-01

申请号：US11333897

申请日：2006-01-18

申请人： Shinsaku Saitho ,  Haruo Urai ,  Nobuyuki Ishiwata ,  Kiyotaka Shimabayashi ,  Yoshihiro Nonaka ,  Tamaki Toba

发明人： Shinsaku Saitho ,  Haruo Urai ,  Nobuyuki Ishiwata ,  Kiyotaka Shimabayashi ,  Yoshihiro Nonaka ,  Tamaki Toba

IPC分类号： G11B5/147

CPC分类号： G11B5/3967 ,  G11B5/3116 ,  G11B5/313

摘要： To accurately decrease the gap depth between an upper pole layer and a lower pole layer and the front-end portion width of the upper pole layer. A thin-film magnetic head of the present invention is constituted by forming a lower shielding layer, a read gap layer holding an MR magnetosensitive element, a common pole layer, and a write gap layer in order on an insulating substrate, forming a first flattening layer, a coil pattern layer, and a second flattening layer laminated in order on the write gap layer excluding the vicinity of an ABS plane, and forming an upper pole layer on the write gap layer and the second flattening layer nearby an ABS plane. Moreover, a concave portion is formed on the common pole layer at a position separated from the ABS plane, the concave portion is filled with a nonmagnetic body, and the gap depth between the upper pole layer and the common pole layer is determined by the concave portion.

公开(公告)号：US07054107B2

公开(公告)日：2006-05-30

申请号：US10375239

申请日：2003-02-27

申请人： Shinsaku Saitho ,  Haruo Urai ,  Nobuyuki Ishiwata ,  Kiyotaka Shimabayashi ,  Yoshihiro Nonaka ,  Tamaki Toba

发明人： Shinsaku Saitho ,  Haruo Urai ,  Nobuyuki Ishiwata ,  Kiyotaka Shimabayashi ,  Yoshihiro Nonaka ,  Tamaki Toba

IPC分类号： G11B5/147

CPC分类号： G11B5/3967 ,  G11B5/3116 ,  G11B5/313

摘要： To accurately decrease the gap depth between an upper pole layer and a lower pole layer and the front-end portion width of the upper pole layer.A thin-film magnetic head of the present invention is constituted by forming a lower shielding layer, a read gap layer holding an MR magnetosensitive element, a common pole layer, and a write gap layer in order on an insulating substrate, forming a first flattening layer, a coil pattern layer, and a second flattening layer laminated in order on the write gap layer excluding the vicinity of an ABS plane, and forming an upper pole layer on the write gap layer and the second flattening layer nearby an ABS plane. Moreover, a concave portion is formed on the common pole layer at a position separated from the ABS plane, the concave portion is filled with a nonmagnetic body, and the gap depth between the upper pole layer and the common pole layer is determined by the concave portion.

摘要翻译： 为了精确地减小上极层和下极层之间的间隙深度和上极层的前端部宽度。 本发明的薄膜磁头通过在绝缘基板上依次形成下屏蔽层，保持MR磁敏元件，公共极层和写间隙层的读取间隙层，形成第一扁平化 层，线圈图案层和在除了ABS平面附近的写入间隙层上顺序层叠的第二平坦化层，并且在ABS平面附近的写间隙层和第二平坦化层上形成上极层。 此外，在与ABS平面分离的位置处，在公共极层上形成凹部，凹部填充有非磁性体，上极层和公共极层之间的间隙深度由凹部 一部分。

公开(公告)号：US5828533A

公开(公告)日：1998-10-27

申请号：US659565

申请日：1996-06-10

申请人： Keishi Ohashi ,  Haruo Urai ,  Shinsaku Saito

发明人： Keishi Ohashi ,  Haruo Urai ,  Shinsaku Saito

IPC分类号： G11B5/31 ,  G11B5/147 ,  G11B5/235

CPC分类号： G11B5/313 ,  G11B5/3109 ,  G11B5/3116 ,  G11B5/312 ,  G11B5/3146 ,  G11B5/3163

摘要： A thin film magnetic head includes lower and upper magnetic cores, an upper magnetic core distal end portion, a magnetic gap layer, coil layers, and insulating layers. The lower magnetic core has a distal end portion facing a magnetic head floating surface. The upper magnetic core distal end portion opposes the distal end portion of the lower magnetic core through a magnetic gap. The lower magnetic core and the upper magnetic head distal end portion are heated at a temperature T1 to have a saturation magnetic flux density BS1. The upper magnetic core magnetically connects the lower magnetic core and the upper magnetic core distal end portion to constitute a magnetic core and is heated at a temperature T2 to have a saturation magnetic flux density BS2. Note that T2

摘要翻译： 薄膜磁头包括下磁芯和上磁心，上磁芯远端部分，磁隙层，线圈层和绝缘层。 下磁芯具有面向磁头浮动表面的远端部分。 上磁芯的前端部通过磁隙与下磁芯的前端部相对。 下磁芯和上磁头前端部分在温度T1下被加热以具有饱和磁通密度BS1。 上磁芯将下磁芯和上磁芯的前端部磁性地连接构成磁芯，并在温度T2下加热，使其具有饱和磁通密度BS2。 请注意，T2