公开(公告)号：US08000063B2

公开(公告)日：2011-08-16

申请号：US11623493

申请日：2007-01-16

申请人： Atsushi Yamaguchi ,  Kei Hirata ,  Satoshi Miura ,  Yoshihiro Tsuchiya ,  Kiyoshi Noguchi

发明人： Atsushi Yamaguchi ,  Kei Hirata ,  Satoshi Miura ,  Yoshihiro Tsuchiya ,  Kiyoshi Noguchi

IPC分类号： G11B5/39

CPC分类号： G11B5/3967 ,  G11B5/11 ,  G11B5/3912

摘要： A magneto-resistive element includes a lower magnetic shield film and a magneto-resistive film disposed above the lower magnetic shield film. The lower magnetic shield film includes a lower shield layer and an upper shield layer. The upper shield layer is amorphous or microcrystalline, made of a NiFe or CoFe composition containing B or P, and deposited on the lower shield layer. The lower shield layer is a magnetic conductive layer which is amorphous or microcrystalline with a crystal grain size equal to or less than 20 nm.

摘要翻译： 磁阻元件包括下磁屏蔽膜和设置在下磁屏蔽膜上方的磁阻膜。 下磁屏蔽膜包括下屏蔽层和上屏蔽层。 上屏蔽层是无定形或微晶的，由含有B或P的NiFe或CoFe组合物制成并沉积在下屏蔽层上。 下屏蔽层是晶体尺寸等于或小于20nm的非晶或微晶的导电层。

公开(公告)号：US20070242391A1

公开(公告)日：2007-10-18

申请号：US11623493

申请日：2007-01-16

申请人： Atsushi YAMAGUCHI ,  Kei Hirata ,  Satoshi Miura ,  Yoshihiro Tsuchiya ,  Kiyoshi Noguchi

发明人： Atsushi YAMAGUCHI ,  Kei Hirata ,  Satoshi Miura ,  Yoshihiro Tsuchiya ,  Kiyoshi Noguchi

IPC分类号： G11B5/33 ,  G11B5/127

CPC分类号： G11B5/3967 ,  G11B5/11 ,  G11B5/3912

摘要： A magneto-resistive element includes a lower magnetic shield film and a magneto-resistive film disposed above the lower magnetic shield film. The lower magnetic shield film includes a lower shield layer and an upper shield layer. The upper shield layer is amorphous or microcrystalline, made of a NiFe or CoFe composition containing B or P, and deposited on the lower shield layer. The lower shield layer is a magnetic conductive layer which is amorphous or microcrystalline with a crystal grain size equal to or less than 20 nm.

摘要翻译： 磁阻元件包括下磁屏蔽膜和设置在下磁屏蔽膜上方的磁阻膜。 下磁屏蔽膜包括下屏蔽层和上屏蔽层。 上屏蔽层是无定形或微晶的，由含有B或P的NiFe或CoFe组合物制成并沉积在下屏蔽层上。 下屏蔽层是晶体尺寸等于或小于20nm的非晶或微晶的导电层。

公开(公告)号：US07663845B2

公开(公告)日：2010-02-16

申请号：US11616503

申请日：2006-12-27

申请人： Kei Hirata ,  Koji Shimazawa ,  Atsushi Yamaguchi ,  Kiyoshi Noguchi

发明人： Kei Hirata ,  Koji Shimazawa ,  Atsushi Yamaguchi ,  Kiyoshi Noguchi

IPC分类号： G11B5/11 ,  G11B5/39

CPC分类号： G11B5/3912

摘要： A current-perpendicular-to-plane magneto-resistive element includes a magneto-resistive film and a pair of upper and lower magnetic shielding films holding the magneto-resistive film therebetween for current feeding. The lower magnetic shielding film has an at least two-layer structure including a crystalline material layer and an amorphous material layer disposed below the crystalline material layer.

摘要翻译： 电流 - 垂直于平面的磁阻元件包括磁阻膜和一对上下磁屏蔽膜，其在其间保持用于电流馈送的磁阻膜。 下磁屏蔽膜具有至少两层结构，包括结晶材料层和设置在结晶材料层下方的无定形材料层。

公开(公告)号：US20070211391A1

公开(公告)日：2007-09-13

申请号：US11616503

申请日：2006-12-27

申请人： Kei HIRATA ,  Koji Shimazawa ,  Atsushi Yamaguchi ,  Kiyoshi Noguchi

发明人： Kei HIRATA ,  Koji Shimazawa ,  Atsushi Yamaguchi ,  Kiyoshi Noguchi

IPC分类号： G11B5/33

CPC分类号： G11B5/3912

摘要： A current-perpendicular-to-plane magneto-resistive element includes a magneto-resistive film and a pair of upper and lower magnetic shielding films holding the magneto-resistive film therebetween for current feeding. The lower magnetic shielding film has an at least two-layer structure including a crystalline material layer and an amorphous material layer disposed below the crystalline material layer.

摘要翻译： 电流 - 垂直于平面的磁阻元件包括磁阻膜和一对上下磁屏蔽膜，其在其间保持用于电流馈送的磁阻膜。 下磁屏蔽膜具有至少两层结构，包括结晶材料层和设置在结晶材料层下方的无定形材料层。

公开(公告)号：US20070165330A1

公开(公告)日：2007-07-19

申请号：US11647493

申请日：2006-12-29

申请人： Atsushi Yamaguchi ,  Kiyoshi Noguchi ,  Kei Hirata

发明人： Atsushi Yamaguchi ,  Kiyoshi Noguchi ,  Kei Hirata

IPC分类号： G11B5/147

CPC分类号： G11B5/3113 ,  G11B5/3163

摘要： A pole layer of a magnetic head incorporates a soft magnetic film made of an iron-cobalt-nickel-base alloy. When the total of the iron, cobalt and nickel contents of the soft magnetic film is assumed as 100 weight percent, the iron content of the soft magnetic film is within a range of 42 to 90 weight percent inclusive, the cobalt content thereof is within a range of 0 to 48 weight percent inclusive, and the nickel content thereof is within a range of 10 to 20 weight percent inclusive. The soft magnetic film has a crystal structure that is a mixed crystal of a body-centered cubic structure phase and a face-centered cubic structure phase. The soft magnetic film is manufactured by performing electroplating using a plating current whose direction is alternately switched.

摘要翻译： 磁头的极层包含由铁 - 钴 - 镍基合金制成的软磁膜。 当软磁性膜的铁，钴和镍含量的总和为100重量％时，软磁性膜的铁含量在42〜90重量％的范围内，其钴含量在 范围为0〜48重量％，其含量在10〜20重量％的范围内。 软磁性膜具有作为体心立方结构相和面心立方结构相的混晶的晶体结构。 通过使用交替切换方向的电镀电流进行电镀来制造软磁性膜。

公开(公告)号：US20060262454A1

公开(公告)日：2006-11-23

申请号：US11410043

申请日：2006-04-25

申请人： Kei Hirata ,  Kiyoshi Noguchi ,  Atsushi Yamaguchi

发明人： Kei Hirata ,  Kiyoshi Noguchi ,  Atsushi Yamaguchi

IPC分类号： G11B5/147 ,  H04R31/00

CPC分类号： G11B5/3163 ,  G11B5/3143 ,  Y10T29/49021 ,  Y10T29/49048

摘要： The present invention provides a thin film magnetic head capable of satisfying both assurance of recording performance and assurance of reproduction performance. In the case where a lower magnetic layer is formed of an iron cobalt alloy (for example, Fe65Co35) which contains iron in a range of 60 at % to 80 at % and has extremely high saturation magnetic flux density of 2.4 T or higher, a head isolation layer formed of ruthenium (Ru) is provided between the lower magnetic layer and an upper read shield layer portion. As compared with the case where the head isolation layer is not provided between the lower magnetic layer and the upper read shield layer portion, the strength of a recording magnetic field increases and a reproduction output of an MR element is stabilized.

摘要翻译： 本发明提供了能够满足记录性能的保证和再现性能的保证的薄膜磁头。 在下面的磁性层由铁含量在60％至80％范围内的铁钴合金（例如，Fe 65 N 3+ 35）形成的情况下 at％，并且具有2.4T以上的极高饱和磁通密度，在下磁性层和上部读屏蔽层部分之间设置由钌（Ru）形成的磁头隔离层。 与在下部磁性层和上部读取屏蔽层部分之间没有设置磁头隔离层的情况相比，记录磁场的强度增加，MR元件的再现输出稳定。

公开(公告)号：US07684151B2

公开(公告)日：2010-03-23

申请号：US11647493

申请日：2006-12-29

申请人： Atsushi Yamaguchi ,  Kiyoshi Noguchi ,  Kei Hirata

发明人： Atsushi Yamaguchi ,  Kiyoshi Noguchi ,  Kei Hirata

IPC分类号： G11B5/31

CPC分类号： G11B5/3113 ,  G11B5/3163

摘要： A pole layer of a magnetic head incorporates a soft magnetic film made of an iron-cobalt-nickel-base alloy. When the total of the iron, cobalt and nickel contents of the soft magnetic film is assumed as 100 weight percent, the iron content of the soft magnetic film is within a range of 42 to 90 weight percent inclusive, the cobalt content thereof is within a range of 0 to 48 weight percent inclusive, and the nickel content thereof is within a range of 10 to 20 weight percent inclusive. The soft magnetic film has a crystal structure that is a mixed crystal of a body-centered cubic structure phase and a face-centered cubic structure phase. The soft magnetic film is manufactured by performing electroplating using a plating current whose direction is alternately switched.

摘要翻译： 磁头的极层包含由铁 - 钴 - 镍基合金制成的软磁膜。 当软磁性膜的铁，钴和镍含量的总和为100重量％时，软磁性膜的铁含量在42〜90重量％的范围内，其钴含量在 范围为0〜48重量％，其含量在10〜20重量％的范围内。 软磁性膜具有作为体心立方结构相和面心立方结构相的混晶的晶体结构。 通过使用交替切换方向的电镀电流进行电镀来制造软磁性膜。

公开(公告)号：US07463449B2

公开(公告)日：2008-12-09

申请号：US11266289

申请日：2005-11-04

申请人： Kei Hirata ,  Atsushi Yamaguchi ,  Tetsuya Roppongi ,  Kiyoshi Noguchi

发明人： Kei Hirata ,  Atsushi Yamaguchi ,  Tetsuya Roppongi ,  Kiyoshi Noguchi

IPC分类号： G11B5/31 ,  G11B5/127

CPC分类号： G11B5/1278 ,  G11B5/3113 ,  G11B5/3116

摘要： A pole layer incorporate a track width defining and a wide portion. A material forming the pole layer is an alloy whose major elements are iron and nickel. In the alloy, where the proportions of iron and nickel with respect to the total of iron and nickel are indicated as (100−M) weight % and M weight %, respectively, M is greater than 0 and smaller than or equal to 10. The internal stress of the pole layer is a tensile stress. The magnetostriction constant of the material forming the pole layer is positive. Where the anisotropy field of the pole layer is Hk (A/m), the magnetostriction constant of the material forming the pole layer is λ(×10−6), and the internal stress of the pole layer is σ (MPa), the value of Hk/(λ×σ) is greater than 0.01 and smaller than 0.2.

摘要翻译： 极层包含限定的轨道宽度和宽的部分。 形成极层的材料是其主要元素是铁和镍的合金。 在合金中，铁和镍相对于铁和镍总量的比例分别表示为（100-M）重量％和M重量％，M大于0且小于或等于10。 极层的内应力是拉伸应力。 形成极层的材料的磁致伸缩常数为正。 在极层的各向异性场为Hk（A / m）的情况下，形成极层的材料的磁致伸缩常数为λ（x10-6），极层的内应力为σ（MPa） 的Hk /（lambdaxsigma）大于0.01且小于0.2。

公开(公告)号：US07440238B2

公开(公告)日：2008-10-21

申请号：US11410043

申请日：2006-04-25

申请人： Kei Hirata ,  Kiyoshi Noguchi ,  Atsushi Yamaguchi

发明人： Kei Hirata ,  Kiyoshi Noguchi ,  Atsushi Yamaguchi

IPC分类号： G11B5/127

CPC分类号： G11B5/3163 ,  G11B5/3143 ,  Y10T29/49021 ,  Y10T29/49048

摘要： The present invention provides a thin film magnetic head capable of satisfying both assurance of recording performance and assurance of reproduction performance. In the case where a lower magnetic layer is formed of an iron cobalt alloy (for example, Fe65Co35) which contains iron in a range of 60 at % to 80 at % and has extremely high saturation magnetic flux density of 2.4 T or higher, a head isolation layer formed of ruthenium (Ru) is provided between the lower magnetic layer and an upper read shield layer portion. As compared with the case where the head isolation layer is not provided between the lower magnetic layer and the upper read shield layer portion, the strength of a recording magnetic field increases and a reproduction output of an MR element is stabilized.

摘要翻译： 本发明提供了能够满足记录性能的保证和再现性能的保证的薄膜磁头。 在下面的磁性层由铁含量在60％至80％范围内的铁钴合金（例如，Fe 65 N 3+ 35）形成的情况下 at％，并且具有2.4T以上的极高饱和磁通密度，在下磁性层和上部读屏蔽层部分之间设置由钌（Ru）形成的磁头隔离层。 与在下部磁性层和上部读取屏蔽层部分之间没有设置磁头隔离层的情况相比，记录磁场的强度增加，MR元件的再现输出稳定。

公开(公告)号：US07312951B2

公开(公告)日：2007-12-25

申请号：US11038390

申请日：2005-01-21

申请人： Kei Hirata ,  Kiyoshi Noguchi ,  Tetsuya Roppongi ,  Atsushi Yamaguchi

发明人： Kei Hirata ,  Kiyoshi Noguchi ,  Tetsuya Roppongi ,  Atsushi Yamaguchi

IPC分类号： G11B5/127 ,  G11B5/147 ,  G11B5/133 ,  G11B5/33

CPC分类号： G11B5/1278 ,  Y10T428/115 ,  Y10T428/1186

摘要： The invention provides a magnetic head for perpendicular magnetic recording having an air bearing surface positioned facing the recording surface of a recording medium, which records magnetic information on the recording medium by generating magnetic flux toward the recording surface of the recording medium, and comprises a magnetic pole which generates magnetic flux toward the recording surface of the recording medium and a return yoke having one end connected to the magnetic pole and the other end positioned facing the recording surface of the recording medium, wherein the material composing the magnetic pole has a magnetostriction constant λ of at least 0 and less than 10×10−6, with a parameter P represented by the formula: P=Hk/(λ×σ) (where Hk represents the magnetic anisotropic field (A/m), σ represents the stress (MPa) and λ represents the magnetostriction constant) of larger than 0.1 and less than 200.

摘要翻译： 本发明提供了一种用于垂直磁记录的磁头，其具有面向记录介质的记录表面的空气轴承表面，其通过向记录介质的记录表面产生磁通量而将磁信息记录在记录介质上，并且包括磁 向记录介质的记录表面产生磁通的磁极和一个与磁极相连的一端的返回磁轭和面对记录介质的记录表面的另一端，其中构成磁极的材料具有磁致伸缩常数 λ至少为0且小于10×10 -6，具有由以下公式表示的参数P：P = Hk /（lambdaxsigma）（其中Hk表示磁各向异性场（A / m），σ 表示应力（MPa），λ表示磁致伸缩常数）大于0.1且小于200。