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1. 发明申请

US20050036236A1 Thin film magnetic head and manufacturing method thereof 失效
标题翻译：薄膜磁头及其制造方法
公开(公告)号：US20050036236A1
公开(公告)日：2005-02-17
申请号：US10894723
申请日：2004-07-19
申请人： Gen Oikawa , Kazue Kudo , Youji Maruyama , Noriyuki Saiki , Hiromi Shiina
发明人： Gen Oikawa , Kazue Kudo , Youji Maruyama , Noriyuki Saiki , Hiromi Shiina
IPC分类号： G11B5/147 , G11B5/31
CPC分类号： G11B5/3116 , G11B5/147 , Y10T29/49032
摘要： Embodiments of the invention provide a lustrous and uniform plating film having high-performance magnetic characteristics and a thin film magnetic head usable in a high frequency recording band by using the plating film of the invention at a magnetic pole portion. Plating is performed in a plating bath at a low pH of about 1.5 to 2.3. The accuracy of pH control is improved. A magnetic film with the addition of a high resistive metal such as Cr or Mo is formed under the plating condition. Further, the magnetic characteristic is improved by applying a heat treatment to the plating film in a magnetic field, according to specific embodiments of the present invention. A plating film with brightness and uniformity having high saturation magnetic flux density can be formed by reducing the hysteresis loss and the eddy current loss as the magnetic characteristics by the above techniques.
摘要翻译：本发明的实施例通过使用本发明的镀膜在磁极部分提供具有高性能磁特性的光泽均匀的镀膜和可用于高频记录带的薄膜磁头。电镀在约1.5至2.3的低pH值的电镀浴中进行。 pH控制的准确性得到提高。在电镀条件下形成具有添加诸如Cr或Mo的高电阻金属的磁性膜。此外，根据本发明的具体实施方式，通过在磁场中对镀膜进行热处理来提高磁特性。通过上述技术，可以通过减小作为磁特性的磁滞损耗和涡流损耗来形成具有高饱和磁通密度的亮度和均匀性的电镀膜。

2. 发明授权

US07589937B2 Thin film magnetic head with high Fe alloy plating film and manufacturing method thereof 失效
标题翻译：具有高Fe合金镀膜的薄膜磁头及其制造方法
公开(公告)号：US07589937B2
公开(公告)日：2009-09-15
申请号：US10894723
申请日：2004-07-19
申请人： Gen Oikawa , Kazue Kudo , Youji Maruyama , Noriyuki Saiki , Hiromi Shiina
发明人： Gen Oikawa , Kazue Kudo , Youji Maruyama , Noriyuki Saiki , Hiromi Shiina
IPC分类号： G11B5/127
CPC分类号： G11B5/3116 , G11B5/147 , Y10T29/49032
摘要： Embodiments of the invention provide a lustrous and uniform plating film having high-performance magnetic characteristics and a thin film magnetic head usable in a high frequency recording band by using the plating film of the invention at a magnetic pole portion. Plating is performed in a plating bath at a low pH of about 1.5 to 2.3. The accuracy of pH control is improved. A magnetic film with the addition of a high resistive metal such as Cr or Mo is formed under the plating condition. Further, the magnetic characteristic is improved by applying a heat treatment to the plating film in a magnetic field, according to specific embodiments of the present invention. A plating film with brightness and uniformity having high saturation magnetic flux density can be formed by reducing the hysteresis loss and the eddy current loss as the magnetic characteristics by the above techniques.
摘要翻译：本发明的实施例通过使用本发明的镀膜在磁极部分提供具有高性能磁特性的光泽均匀的镀膜和可用于高频记录带的薄膜磁头。电镀在约1.5至2.3的低pH值的电镀浴中进行。 pH控制的准确性得到提高。在电镀条件下形成具有添加诸如Cr或Mo的高电阻金属的磁性膜。此外，根据本发明的具体实施方式，通过在磁场中对镀膜进行热处理来提高磁特性。通过上述技术，可以通过减小作为磁特性的磁滞损耗和涡流损耗来形成具有高饱和磁通密度的亮度和均匀性的电镀膜。

3. 发明申请

US20050208340A1 Magnetic thin film head 失效
标题翻译：磁性薄膜头
公开(公告)号：US20050208340A1
公开(公告)日：2005-09-22
申请号：US11084683
申请日：2005-03-18
申请人： Gen Oikawa , Kazue Kudo , Youji Maruyama , Hiromi Shiina
发明人： Gen Oikawa , Kazue Kudo , Youji Maruyama , Hiromi Shiina
IPC分类号： C25D5/10 , B05D5/12 , B32B1/00 , C22C19/00 , C22C38/00 , C25D5/16 , C25D5/18 , C25D5/50 , C25D7/00 , G11B5/21 , G11B5/31 , H01F10/16 , H01F10/30 , H01F41/26
CPC分类号： B32B15/01 , G11B5/21 , Y10T428/115 , Y10T428/1186
摘要： A magnetic film capable of generating strong magnetic fields even in a high frequency region, a manufacturing method therefore and a thin film magnetic head capable of recording even in a high frequency region are provided. In one embodiment, the magnetic film is manufactured by using a 88FeNi film of 200 nm thick having minimum Hk of 0.32 Oe (25.6 A/m) as a main magnetic film and selecting a 20 wt % FeNi film of a similar FeNi alloy plating film having low Hk and low Hc as an interlayer material. A stacked film comprising (88FeNi/20FeNi)×10 layers is prepared so that the total thickness of the main magnetic film is 2 μm. The 88FeNi film is prepared by application of a DC current in a 88FeNi plating bath, and the 20FeNi film is prepared by pulse plating successively in the same bath.
摘要翻译：提供了即使在高频区域也能够产生强磁场的磁性膜，因此制造方法和即使在高频区域也能够进行记录的薄膜磁头。在一个实施例中，通过使用具有最小Hk为0.32Oe（25.6A / m）的200nm厚度的88FeNi膜作为主要磁性膜并选择类似的FeNi合金镀膜的20wt％FeNi膜来制造磁性膜具有低Hk和低Hc作为中间层材料。制备包含（88FeNi / 20FeNi）×10层的层叠膜，使得主磁性膜的总厚度为2μm。通过在88FeNi电镀浴中施加DC电流制备88FeNi膜，并通过在相同的浴中连续脉冲电镀制备20FeNi膜。

4. 发明授权

US08064161B2 Perpendicular magnetic recording head and method for manufacturing the same 有权
标题翻译：垂直磁记录头及其制造方法
公开(公告)号：US08064161B2
公开(公告)日：2011-11-22
申请号：US12231246
申请日：2008-08-28
申请人： Kazue Kudo , Hiromi Shiina , Gen Oikawa , Yohji Maruyama , Noriyuki Saiki
发明人： Kazue Kudo , Hiromi Shiina , Gen Oikawa , Yohji Maruyama , Noriyuki Saiki
IPC分类号： H04R31/00 , G11B5/147
CPC分类号： G11B5/3146 , G11B5/1278 , G11B5/315 , G11B5/3163 , Y10T29/49044 , Y10T29/4906
摘要： Embodiments of the present invention help to provide a perpendicular magnetic recording head capable of writing a signal in a track having a small width. According to one embodiment, a perpendicular magnetic recording head includes an auxiliary pole, a main pole, a yoke, a coil, a first soft magnetic film and a second soft magnetic film. The yoke is in contact with the main pole. The coil is wound around a magnetic circuit composed of the auxiliary and main poles and the yoke. The first soft magnetic film is provided on both sides of the main pole with a non-magnetic film provided between the first soft magnetic film and the main pole. The second soft magnetic film is provided on the trailing side of the main pole with the non-magnetic film provided between the second soft magnetic film and the main pole. The first and second soft magnetic films are two types of plated magnetic films. One type of the plated magnetic films have respective thicknesses of 0.5 nm to 20 nm and respective body centered cubic lattice crystal structures. The other types of the plated magnetic films have respective thicknesses of 0.5 nm to 20 nm and respective face centered cubic lattice crystal structures. The two types of the plated magnetic films are alternately laminated with four or more layers. This can achieve the magnetic disk drive capable of reducing a possibility to erroneously delete a signal after the signal being written and preventing degradation of characteristics of a high frequency signal.
摘要翻译：本发明的实施例有助于提供一种能够在具有小宽度的轨迹中写入信号的垂直磁记录头。根据一个实施例，垂直磁记录头包括辅助极，主极，磁轭，线圈，第一软磁膜和第二软磁膜。轭与主极接触。线圈缠绕在由辅助和主极和轭构成的磁路上。第一软磁膜设置在主极的两侧，设置在第一软磁膜和主极之间的非磁性膜。第二软磁膜设置在主极的后侧，设置在第二软磁膜和主极之间的非磁性膜。第一和第二软磁膜是两种类型的镀覆磁性膜。一种类型的电镀磁性膜具有0.5nm至20nm的各自的厚度和相应的体心立方晶格结构。其他类型的镀膜磁性膜具有0.5nm至20nm的各自的厚度和各自的面心立方晶格结构。两种类型的镀覆磁性膜交替地层压有四层或更多层。这可以实现能够降低信号被写入之后错误地删除信号的可能性的磁盘驱动器，并且防止高频信号的特性的劣化。

5. 发明申请

US20090059427A1 Perpendicular magnetic recording head and method for manufacturing the same 有权
标题翻译：垂直磁记录头及其制造方法
公开(公告)号：US20090059427A1
公开(公告)日：2009-03-05
申请号：US12231246
申请日：2008-08-28
申请人： Kazue Kudo , Hiromi Shiina , Gen Oikawa , Yoji Maruyama , Noriyuki Saiki
发明人： Kazue Kudo , Hiromi Shiina , Gen Oikawa , Yoji Maruyama , Noriyuki Saiki
IPC分类号： G11B5/127
CPC分类号： G11B5/3146 , G11B5/1278 , G11B5/315 , G11B5/3163 , Y10T29/49044 , Y10T29/4906
摘要： Embodiments of the present invention help to provide a perpendicular magnetic recording head capable of writing a signal in a track having a small width. According to one embodiment, a perpendicular magnetic recording head includes an auxiliary pole, a main pole, a yoke, a coil, a first soft magnetic film and a second soft magnetic film. The yoke is in contact with the main pole. The coil is wound around a magnetic circuit composed of the auxiliary and main poles and the yoke. The first soft magnetic film is provided on both sides of the main pole with a non-magnetic film provided between the first soft magnetic film and the main pole. The second soft magnetic film is provided on the trailing side of the main pole with the non-magnetic film provided between the second soft magnetic film and the main pole. The first and second soft magnetic films are two types of plated magnetic films. One type of the plated magnetic films have respective thicknesses of 0.5 nm to 20 nm and respective body centered cubic lattice crystal structures. The other types of the plated magnetic films have respective thicknesses of 0.5 nm to 20 nm and respective face centered cubic lattice crystal structures. The two types of the plated magnetic films are alternately laminated with four or more layers. This can achieve the magnetic disk drive capable of reducing a possibility to erroneously delete a signal after the signal being written and preventing degradation of characteristics of a high frequency signal.
摘要翻译：本发明的实施例有助于提供一种能够在具有小宽度的轨迹中写入信号的垂直磁记录头。根据一个实施例，垂直磁记录头包括辅助极，主极，磁轭，线圈，第一软磁膜和第二软磁膜。轭与主极接触。线圈缠绕在由辅助和主极和轭构成的磁路上。第一软磁膜设置在主极的两侧，设置在第一软磁膜和主极之间的非磁性膜。第二软磁膜设置在主极的后侧，设置在第二软磁膜和主极之间的非磁性膜。第一和第二软磁膜是两种类型的镀覆磁性膜。一种类型的电镀磁性膜具有0.5nm至20nm的各自的厚度和相应的体心立方晶格结构。其他类型的镀膜磁性膜具有0.5nm至20nm的各自的厚度和各自的面心立方晶格结构。两种类型的镀覆磁性膜交替地层压有四层或更多层。这可以实现能够降低信号被写入之后错误地删除信号的可能性的磁盘驱动器，并且防止高频信号的特性的劣化。

6. 发明申请

US20080075977A1 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：US20080075977A1
公开(公告)日：2008-03-27
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，因此能够降低高频率下的磁导率μμ的降低。

7. 发明授权

US07679860B2 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：US07679860B2
公开(公告)日：2010-03-16
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 , G11B5/31
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
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

8. 发明授权

US07485378B2 Magnetic thin film head 失效
标题翻译：磁性薄膜头
公开(公告)号：US07485378B2
公开(公告)日：2009-02-03
申请号：US11084683
申请日：2005-03-18
申请人： Gen Oikawa , Kazue Kudo , Youji Maruyama , Hiromi Shiina
发明人： Gen Oikawa , Kazue Kudo , Youji Maruyama , Hiromi Shiina
IPC分类号： G11B5/127
CPC分类号： B32B15/01 , G11B5/21 , Y10T428/115 , Y10T428/1186
摘要： A magnetic film capable of generating strong magnetic fields even in a high frequency region, a manufacturing method therefore and a thin film magnetic head capable of recording even in a high frequency region are provided. In one embodiment, the magnetic film is manufactured by using a 88FeNi film of 200 nm thick having minimum Hk of 0.32 Oe (25.6 A/m) as a main magnetic film and selecting a 20 wt % FeNi film of a similar FeNi alloy plating film having low Hk and low Hc as an interlayer material. A stacked film comprising (88FeNi/20FeNi)×10 layers is prepared so that the total thickness of the main magnetic film is 2 μm. The 88FeNi film is prepared by application of a DC current in a 88FeNi plating bath, and the 20FeNi film is prepared by pulse plating successively in the same bath.
摘要翻译：提供了即使在高频区域也能够产生强磁场的磁性膜，因此制造方法以及即使在高频区域也能够进行记录的薄膜磁头。在一个实施例中，通过使用具有最小Hk为0.32Oe（25.6A / m）的200nm厚度的88FeNi膜作为主要磁性膜并选择类似的FeNi合金镀膜的20wt％FeNi膜来制造磁性膜具有低Hk和低Hc作为中间层材料。制备包含（88FeNi / 20FeNi）×10层的层叠膜，使得主磁性膜的总厚度为2μm。通过在88FeNi电镀浴中施加DC电流制备88FeNi膜，并通过在相同的浴中连续脉冲电镀制备20FeNi膜。

9. 发明授权

US07995311B2 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：US07995311B2
公开(公告)日：2011-08-09
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： G11B5/147
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，Ni2 +和5〜15（g / l）的金属离子浓度约为5〜25（g / 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）。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。

10. 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

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