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21. 发明授权

US07842408B2 Magnetic film, manufacturing method thereof and thin film magnetic head 有权
标题翻译：磁膜，其制造方法和薄膜磁头
公开(公告)号：US07842408B2
公开(公告)日：2010-11-30
申请号：US11820598
申请日：2007-06-19
申请人： Kazue Kudo , Gen Oikawa , Yohji Maruyama , Noriyuki Saiki , Hiromi Shiina
发明人： Kazue Kudo , Gen Oikawa , Yohji Maruyama , Noriyuki Saiki , Hiromi Shiina
IPC分类号： G11B5/33 , H04R31/00
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/147 , G11B5/313 , Y10T29/49032 , Y10T428/115
摘要： Embodiments of the present invention provide a magnetic disk drive capable of allowing higher data transfer rates and higher recording densities. According to one embodiment, an upper magnetic core and lower magnetic core comprise a multi-layered magnetic film formed by alternately stacking a face-centered cubic (fcc) crystalline magnetic thin layer and a body-centered cubic (bcc) crystalline magnetic thin layer by plating. The plating bath is such that the temperature is about 30±1° C., pH is about 2.0−1.0 to 2.0+0.5, metal ion concentrations are about 5 to 25 (g/l) for Ni2+ and 5 to 15 (g/l) for Fe2+, saccharin sodium concentration is about 1.5±1.0 (g/l), sodium chloride concentration is about 25±5 (g/l), and boric acid concentration is about 25±5 (g/l). Since each layer's crystal structure is different from that of its adjacent lower layer, epitaxial growth is broken within each layer. Thus, since crystal grains are reduced in size, it is possible to lessen the decrease of the permeability μ at higher frequencies.
摘要翻译：本发明的实施例提供一种能够允许更高数据传输速率和更高记录密度的磁盘驱动器。根据一个实施例，上磁芯和下磁芯包括通过交替地将面心立方（fcc）晶体磁性薄层和体心立方（bcc）结晶磁性薄层交替堆叠而形成的多层磁性膜，电镀。电镀浴温度为约30±1℃，pH为约2.0-1.0至2.0 + 0.5，Ni2 +和5至15（g / l）的金属离子浓度为约5至25（g / l） l）对于Fe2 +，糖精钠浓度约为1.5±1.0（g / l），氯化钠浓度约为25±5（g / l），硼酸浓度约为25±5（g / l）。由于每个层的晶体结构与其相邻的下层的晶体结构不同，所以在每个层内外延生长被破坏。因此，由于晶粒尺寸减小，因此可以降低较高频率下的磁导率μ的降低。

22. 发明申请

US20080002308A1 Magnetic shield, manufacturing method thereof and thin film magnetic head employing the same 有权
标题翻译：磁屏蔽，其制造方法和使用该磁屏蔽的薄膜磁头
公开(公告)号：US20080002308A1
公开(公告)日：2008-01-03
申请号：US11820554
申请日：2007-06-19
申请人： Kazue Kudo , Gen Oikawa , Yohji Maruyama , Noriyuki Saiki , Hiromi Shiina
发明人： Kazue Kudo , Gen Oikawa , Yohji Maruyama , Noriyuki Saiki , Hiromi Shiina
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/3912 , G11B5/3967
摘要： Embodiments of the present invention provide a magnetic shield composed of size-controlled small crystal grains and provide a more after-write read noise free thin film magnetic head. According to one embodiment of the present invention, an upper magnetic shield uses a multi-layered magnetic film formed by alternately stacking a face-centered cubic (fcc) crystalline magnetic thin layer and a body-centered cubic (bcc) crystalline magnetic thin layer by plating. The plating bath is such that the temperature is 30±1° C., pH is about 2.0-1.0 to 2.0+0.5, metal ion concentrations are about 5 to 25 (g/l) for Ni2+ and 5 to 15 (g/l) for Fe2+, saccharin sodium concentration is about 1.5±1.0 (g/l), sodium chloride concentration is about 25±5 (g/l), and boric acid concentration is about 25±5 (g/l). Each layer's crystal structure is different from that of its upper and lower layers, which results in size-controlled small crystal grains since the epitaxial growth is broken. Since crystal grains are reduced in size, it is possible to suppress the after-write read noise and therefore attain a read head which allows recording at higher frequencies.
摘要翻译：本发明的实施例提供一种由尺寸控制的小晶粒组成的磁屏蔽，并提供更多的后写入无噪声薄膜磁头。根据本发明的一个实施例，上磁屏蔽使用通过交替层叠面心立方（fcc）结晶磁性薄膜和体心立方（bcc）结晶磁性薄膜而形成的多层磁性膜，电镀。电镀浴温度为30±1℃，pH为约2.0-1.0〜2.0±0.5，Ni 2+ / SUP的金属离子浓度约为5〜25（g / l） > 5〜15（g / l），糖精钠浓度约为1.5±1.0（g / l），氯化钠浓度约为25±5（g / l）硼酸浓度约为25±5（g / l）。每层的晶体结构与其上层和下层的晶体结构不同，这导致尺寸控制的小晶粒，因为外延生长破裂。由于晶粒尺寸减小，因此可以抑制写入后的读取噪声，从而获得允许以较高频率记录的读取头。

23. 发明申请

US20060203385A1 Thin film magnetic head with layer having high saturation magnetic flux density, and magnetic storage apparatus 有权
标题翻译：具有高饱和磁通密度的层的薄膜磁头和磁存储装置
公开(公告)号：US20060203385A1
公开(公告)日：2006-09-14
申请号：US11372835
申请日：2006-03-09
申请人： Kazue Kudo , Gen Oikawa , Youji Maruyama , Hiromi Shiina
发明人： Kazue Kudo , Gen Oikawa , Youji Maruyama , Hiromi Shiina
IPC分类号： G11B5/147
CPC分类号： G11B5/1278 , G11B5/21 , G11B5/3109 , H01F10/16 , H01F41/26 , Y10T428/115 , Y10T428/1186
摘要： Embodiments of the invention provide a magnetic film capable of providing a higher saturation magnetic flux density as compared with the conventional one, a process of forming the magnetic film, a thin film magnetic head that makes use of the magnetic film, and a magnetic disk drive having this thin film magnetic head. In one embodiment, a magnetic film contains Co, Ni, and Fe, and its composition is such that 10≦Co≦40 wt %, 0
摘要翻译：本发明的实施例提供了一种能够提供比常规的更高的饱和磁通密度的磁性膜，形成磁性膜的方法，利用磁性膜的薄膜磁头和磁盘驱动器具有这种薄膜磁头。在一个实施方案中，磁性膜含有Co，Ni和Fe，并且其组成使得10 <= Co <= 40wt％，0

24. 发明授权

US08570683B2 Low permeability material for a side shield in a perpendicular magnetic head 有权
标题翻译：用于垂直磁头中侧屏蔽的低磁导率材料
公开(公告)号：US08570683B2
公开(公告)日：2013-10-29
申请号：US13168083
申请日：2011-06-24
申请人： Yusuke Takahashi , Hiromi Shiina , Kazue Kudo , Yohji Maruyama , Kaori Suzuki
发明人： Yusuke Takahashi , Hiromi Shiina , Kazue Kudo , Yohji Maruyama , Kaori Suzuki
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/1278
摘要： In one embodiment, a perpendicular magnetic head includes a main magnetic pole, a side shield disposed on both sides of the main magnetic pole in a track width direction, the side shield including a material having a saturation magnetic flux density of no greater than about 1.0 T, and a trailing shield disposed on a trailing side of the main magnetic pole, wherein the trailing shield and the side shield are physically separated from one another. In another embodiment, the side shield includes a first magnetic film, and the trailing shield includes a second magnetic film, wherein a magnetic permeability of the first magnetic film is lower than a magnetic permeability of the second magnetic film.
摘要翻译：在一个实施例中，垂直磁头包括主磁极，设置在主磁极的轨道宽度方向两侧的侧屏蔽，侧屏蔽包括饱和磁通密度不大于约1.0的材料 T和设置在主磁极的后侧的后屏蔽，其中后屏蔽和侧屏在物理上彼此分离。在另一个实施例中，侧屏蔽包括第一磁性膜，并且后屏蔽包括第二磁性膜，其中第一磁性膜的磁导率低于第二磁性膜的磁导率。

25. 发明授权

US08300358B2 Magnetic head having write pole, first soft magnetic films separately disposed on both sides of the main pole, and a second soft magnetic film disposed on a trailing side of the main pole 有权
标题翻译：具有写极的磁头，分别设置在主极两侧的第一软磁膜和设置在主极的后侧的第二软磁膜
公开(公告)号：US08300358B2
公开(公告)日：2012-10-30
申请号：US12070155
申请日：2008-02-15
申请人： Yohji Maruyama , Tadayuki Iwakura , Kimitoshi Etoh , Hiromi Shiina , Kazue Kudo
发明人： Yohji Maruyama , Tadayuki Iwakura , Kimitoshi Etoh , Hiromi Shiina , Kazue Kudo
IPC分类号： G11B5/127
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。

26. 发明授权

US08189293B1 Perpendicular magnetic recording head having a grooved wrap around shield and method for manufacturing the same 有权
标题翻译：垂直磁记录头，其具有围绕屏蔽的沟槽环绕件及其制造方法
公开(公告)号：US08189293B1
公开(公告)日：2012-05-29
申请号：US13096775
申请日：2011-04-28
申请人： Yasuhiro Wakabayashi , Kazue Kudo , Shouji Tokutake , Hiromi Shiina , Yohji Maruyama
发明人： Yasuhiro Wakabayashi , Kazue Kudo , Shouji Tokutake , Hiromi Shiina , Yohji Maruyama
IPC分类号： G11B5/31
CPC分类号： G11B5/3116 , G11B5/1278 , G11B5/315 , G11B5/3163
摘要： According to one embodiment, a perpendicular magnetic recording head includes a shield having a groove and a main magnetic pole positioned in the groove of the shield. The groove includes a bottom side near a leading edge of the shield and inclined sides extending from the bottom side toward a trailing edge of the shield and from an ABS side of the head to a recessed side of the shield opposite the ABS. The shield is coupled to a non-magnetic layer at the recessed side, a cross-sectional area of the groove is less at a position nearer to the substrate than a position farther from the substrate, a cross-sectional area of the groove is less at a position nearer to the ABS side of the shield than a position farther from the ABS side of the shield, and a portion of the sides of the groove have curved surfaces.
摘要翻译：根据一个实施例，垂直磁记录头包括具有凹槽和位于屏蔽的槽中的主磁极的屏蔽。凹槽包括靠近屏蔽件前缘的底侧和从屏蔽的底侧向后缘延伸的倾斜侧和从头部的ABS侧到与ABS相对的屏蔽件的凹入侧。屏蔽层在凹陷侧耦合到非磁性层，在远离基板的位置处，在较靠近基板的位置处的沟槽的横截面积较小，凹槽的横截面积较小在远离防护罩的ABS侧的位置更靠近防护罩的ABS侧的位置处，并且槽的一部分侧面具有曲面。

27. 发明申请

US20080198507A1 Magnetic head and method of manufacturing the same 有权
标题翻译：磁头及其制造方法
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。

28. 发明申请

US20120327531A1 LOW PERMEABILITY MATERIAL FOR A SIDE SHIELD IN A PERPENDICULAR MAGNETIC HEAD 有权
标题翻译：低渗透性材料在一个普通磁头的一个侧面的屏蔽
公开(公告)号：US20120327531A1
公开(公告)日：2012-12-27
申请号：US13168083
申请日：2011-06-24
申请人： Yusuke Takahashi , Hiromi Shiina , Kazue Kudo , Yohji Maruyama , Kaori Suzuki
发明人： Yusuke Takahashi , Hiromi Shiina , Kazue Kudo , Yohji Maruyama , Kaori Suzuki
IPC分类号： G11B21/02 , G11B5/33
CPC分类号： G11B5/3116 , G11B5/1278
摘要： In one embodiment, a perpendicular magnetic head includes a main magnetic pole, a side shield disposed on both sides of the main magnetic pole in a track width direction, the side shield including a material having a saturation magnetic flux density of no greater than about 1.0 T, and a trailing shield disposed on a trailing side of the main magnetic pole, wherein the trailing shield and the side shield are physically separated from one another. In another embodiment, the side shield includes a first magnetic film, and the trailing shield includes a second magnetic film, wherein a magnetic permeability of the first magnetic film is lower than a magnetic permeability of the second magnetic film.
摘要翻译：在一个实施例中，垂直磁头包括主磁极，设置在主磁极的轨道宽度方向两侧的侧屏蔽，侧屏蔽包括饱和磁通密度不大于约1.0的材料 T和设置在主磁极的后侧的后屏蔽，其中后屏蔽和侧屏在物理上彼此分离。在另一个实施例中，侧屏蔽包括第一磁性膜，并且后屏蔽包括第二磁性膜，其中第一磁性膜的磁导率低于第二磁性膜的磁导率。

29. 发明申请

US20130057981A1 SHINGLED MAGNETIC RECORDING (SMR) HEAD WITH BENT TRAILING SHIELD AND METHODS OF PRODUCTION THEREOF 有权
标题翻译：具有弯曲轨迹的SHINGLED MAGNETIC RECORDING（SMR）头及其生产方法
公开(公告)号：US20130057981A1
公开(公告)日：2013-03-07
申请号：US13226377
申请日：2011-09-06
申请人： Yosuke Urakami , Kazue Kudo , Hiromi Shiina , Masafumi Mochizuki , Shouji Tokutake
发明人： Yosuke Urakami , Kazue Kudo , Hiromi Shiina , Masafumi Mochizuki , Shouji Tokutake
IPC分类号： G11B5/00 , G11B5/127
CPC分类号： G11B5/1278 , G11B5/012 , G11B5/23 , G11B5/3116 , G11B5/315
摘要： In one embodiment, a magnetic head includes a main pole, a trailing shield positioned near a trailing side of the main pole, a side shield positioned near both sides of the main pole in a cross-track direction, a leading shield positioned near a leading side of the main pole, and a gap positioned between the main pole and the shields, characterized in that Sg1
摘要翻译：在一个实施例中，磁头包括主极，位于主极的后侧附近的后屏蔽，位于主磁极两侧的跨屏蔽方向的侧屏蔽，位于导线主极之间的间隙，以及位于主极与屏蔽之间的间隙，其特征在于，Sg1

30. 发明授权

US08630064B2 Magnetic write head with novel shield structure having latterally extending trailing gap layer and concaved side gap 有权
标题翻译：具有新颖屏蔽结构的磁写头，具有横向延伸的后隙间隙和凹面侧隙
公开(公告)号：US08630064B2
公开(公告)日：2014-01-14
申请号：US13294816
申请日：2011-11-11
申请人： Maki Maeda , Kimitoshi Eto , Hiromi Shiina , Kazue Kudo , Masafumi Mochizuki
发明人： Maki Maeda , Kimitoshi Eto , Hiromi Shiina , Kazue Kudo , Masafumi Mochizuki
IPC分类号： G11B5/11 , G11B5/187
CPC分类号： G11B5/3116 , G11B5/1278
摘要： A magnetic write head having a gap structure that improves write head performance. The write head includes a magnetic write pole and a magnetic shield that is separated from the trailing edge of the write pole by a non-magnetic trailing gap layer and is separated from the sides of the write pole by non-magnetic side gap layers. The trailing gap extends laterally beyond the side gap layers, and a convex bump is formed at an edge of the magnetic shield at a location near the trailing end of each of the side gap layers.
摘要翻译：具有提高写头性能的间隙结构的磁写头。写磁头包括磁写磁极和磁屏蔽，其通过非磁性后隙间隔层与写磁极的后缘分离，并且通过非磁性侧间隙层与写磁极的侧面分离。拖尾间隙横向延伸超过侧间隙层，并且在靠近每个侧间隙层的后端的位置处在磁屏蔽的边缘处形成凸起凸起。

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