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1. 发明申请

US20090207531A1 MAGNETIC RECORDING AND REPRODUCING HEAD AND MAGNETIC RECORDING AND REPRODUCING DEVICE 失效
标题翻译：磁记录和再现磁头和磁记录和再现装置
公开(公告)号：US20090207531A1
公开(公告)日：2009-08-20
申请号：US12365195
申请日：2009-02-04
申请人： Masato SHIIMOTO , Takeshi Nakagawa , Hiroyuki Katada , Naoto Ito , Kenichi Meguro
发明人： Masato SHIIMOTO , Takeshi Nakagawa , Hiroyuki Katada , Naoto Ito , Kenichi Meguro
IPC分类号： G11B5/33
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/3912 , G11B5/3967 , G11B2005/3996
摘要： A magnetic recording read head is provided capable of achieving high reproduction output, resolution, and SNR, even at a high linear density. There is also provided a magnetic recording and reproducing device capable of achieving sufficient error bit rate. The magnetic recording read head includes a differential read head and a write head. The differential read head has a multilayer structure formed by laminating a first magnetoresistive sensor having a first free layer, a differential gap layer, and a second magnetoresistive sensor having a second free layer. Outside the multilayer structure, a pair of electrodes and a pair of magnetic shields are provided respectively. A ratio (Gl/bl) of an inside distance (Gl) between the first and second free layers to a bit length (bl) is set to 0.6 or more and 1.6 or less.
摘要翻译：提供了能够实现高再现输出，分辨率和SNR的磁记录读取头，即使在高线性密度下也是如此。还提供了能够实现足够的错误比特率的磁记录和再现装置。磁记录读取头包括差分读取头和写入头。差分读取头具有层叠具有第一自由层，差分间隙层的第一磁阻传感器和具有第二自由层的第二磁阻传感器形成的多层结构。在多层结构之外，分别设置一对电极和一对磁屏蔽。将第一自由层与第二自由层之间的内部距离（G1）与比特长度（b1）的比（G1 / b1）设定为0.6以上且1.6以下。

2. 发明授权

US08270122B2 Magnetic recording and reproducing device including a differential read head 失效
标题翻译：磁记录和再现装置包括差分读头
公开(公告)号：US08270122B2
公开(公告)日：2012-09-18
申请号：US12365195
申请日：2009-02-04
申请人： Masato Shiimoto , Takeshi Nakagawa , Hiroyuki Katada , Naoto Ito , Kenichi Meguro
发明人： Masato Shiimoto , Takeshi Nakagawa , Hiroyuki Katada , Naoto Ito , Kenichi Meguro
IPC分类号： G11B5/39
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , G11B5/3912 , G11B5/3967 , G11B2005/3996
摘要： A magnetic recording read head is provided capable of achieving high reproduction output, resolution, and SNR, even at a high linear density. There is also provided a magnetic recording and reproducing device capable of achieving sufficient error bit rate. The magnetic recording read head includes a differential read head and a write head. The differential read head has a multilayer structure formed by laminating a first magnetoresistive sensor having a first free layer, a differential gap layer, and a second magnetoresistive sensor having a second free layer. Outside the multilayer structure, a pair of electrodes and a pair of magnetic shields are provided respectively. A ratio (Gl/bl) of an inside distance (Gl) between the first and second free layers to a bit length (bl) is set to 0.6 or more and 1.6 or less.
摘要翻译：提供了能够实现高再现输出，分辨率和SNR的磁记录读取头，即使在高线性密度下也是如此。还提供了能够实现足够的错误比特率的磁记录和再现装置。磁记录读取头包括差分读取头和写入头。差分读取头具有层叠具有第一自由层，差分间隙层的第一磁阻传感器和具有第二自由层的第二磁阻传感器形成的多层结构。在多层结构之外，分别设置一对电极和一对磁屏蔽。将第一自由层与第二自由层之间的内部距离（G1）与比特长度（b1）的比（G1 / b1）设定为0.6以上且1.6以下。

3. 发明申请

US20070091511A1 CPP-GMR magnetic head having GMR-screen layer 有权
标题翻译：具有GMR屏幕层的CPP-GMR磁头
公开(公告)号：US20070091511A1
公开(公告)日：2007-04-26
申请号：US11584397
申请日：2006-10-19
申请人： Hiroyuki Hoshiya , Katsumi Hoshino , Kenichi Meguro , Yo Sato , Hiroyuki Katada
发明人： Hiroyuki Hoshiya , Katsumi Hoshino , Kenichi Meguro , Yo Sato , Hiroyuki Katada
IPC分类号： G11B5/127 , G11B5/33
CPC分类号： G11B5/3929 , B82Y10/00 , B82Y25/00 , G11B2005/3996
摘要： A spin-valve type magnetic head which has sufficiently high output is provided. In one embodiment, a structure in which high output coexists with high stability is achieved by letting a GMR-effect and a current-path-confinement effect manifest themselves at the same time in a GMR-screen layer consisting of a ferromagnetic metal spike-like part and a half-covering oxide layer.
摘要翻译：提供具有足够高输出的自旋阀式磁头。在一个实施例中，通过在由铁磁性金属尖状形成的GMR屏幕层中同时显现GMR效应和电流路径限制效应来实现高输出共存高稳定性的结构半覆盖氧化层。

4. 发明授权

US07733614B2 Magneto-resistive head having a stable response property without longitudinal biasing and method for manufacturing the same 失效
标题翻译：具有稳定的响应特性而不具有纵向偏置的磁阻头及其制造方法
公开(公告)号：US07733614B2
公开(公告)日：2010-06-08
申请号：US11698251
申请日：2007-01-24
申请人： Kenichi Meguro , Hiroyuki Katada , Katsumi Hoshino , Hiroyuki Hoshiya
发明人： Kenichi Meguro , Hiroyuki Katada , Katsumi Hoshino , Hiroyuki Hoshiya
IPC分类号： G11B5/127
CPC分类号： G11B5/399 , B82Y25/00 , G01R33/093 , G11B5/3906 , H01L43/08 , H01L43/12
摘要： Embodiments in accordance with the present invention provide a method of manufacturing a magneto-resistive head which can realize high sensitivity and good linear response characteristics with low noise even if a track width becomes narrower. A uniaxial anisotropy unaffected by annealing which is due to the orientation of the crystal grain growth direction, is induced in a magnetic layer. The free magnetic layer has the synthetic antiferromagnetic construction: first magnetic layer/interlayer antiferromagnetic coupling layer/second magnetic layer, the magnitude of the antiferromagnetic coupling is adjusted, and linear response characteristics are obtained even if a longitudinal biasing field applying mechanism is not provided.
摘要翻译：根据本发明的实施例提供一种制造磁阻头的方法，即使轨道宽度变窄，其也可以实现具有低噪声的高灵敏度和良好的线性响应特性。在磁性层中诱发不受退火影响的单轴各向异性，这是由于晶粒生长方向的取向引起的。自由磁性层具有合成的反铁磁结构：第一磁性层/层间反铁磁耦合层/第二磁性层，调整反铁磁耦合的大小，并且即使没有提供纵向偏置场施加机构也可获得线性响应特性。

5. 发明申请

US20090034135A1 Differential magnetoresistive magnetic head 有权
标题翻译：差分磁阻磁头
公开(公告)号：US20090034135A1
公开(公告)日：2009-02-05
申请号：US12218860
申请日：2008-07-17
申请人： Hiroyuki Hoshiya , Kenichi Meguro , Katsumi Hoshino , Yo Sato , Hiroyuki Katada , Kazuhiro Nakamoto
发明人： Hiroyuki Hoshiya , Kenichi Meguro , Katsumi Hoshino , Yo Sato , Hiroyuki Katada , Kazuhiro Nakamoto
IPC分类号： G11B5/33
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3929 , G11B2005/3996
摘要： Embodiments of the present invention help to provide a single element type differential magnetoresistive magnetic head capable of achieving high resolution and high manufacturing stability. According to one embodiment, a magnetoresistive layered film is formed by stacking an underlayer film, an antiferromagnetic film, a ferromagnetic pinned layer, a non-magnetic intermediate layer, a soft magnetic free layer, a long distance antiparallel coupling layered film, and a differential soft magnetic free layer. The long distance antiparallel coupling layered film exchange-couples the soft magnetic free layer and the differential soft magnetic free layer in an antiparallel state with a distance of about 3 nanometers through 20 nanometers. By manufacturing the single element type differential magnetoresistive magnetic head using the magnetoresistive layered film, it becomes possible to achieve the high resolution and the high manufacturing stability without spoiling the GMR effect.
摘要翻译：本发明的实施例有助于提供能够实现高分辨率和高制造稳定性的单元型差分磁阻磁头。根据一个实施例，通过堆叠下层膜，反铁磁性膜，铁磁性钉扎层，非磁性中间层，软磁性自由层，长距离反向平行耦合层叠膜和差动层叠膜形成磁阻层叠膜软磁自由层。长距离反平行耦合分层膜将软磁自由层和差分软磁自由层以约3纳米至20纳米的距离反平行状态进行交换耦合。通过使用磁阻层叠膜制造单元型差分磁阻磁头，可以实现高分辨率和高制造稳定性而不破坏GMR效应。

6. 发明授权

US08174799B2 Differential magnetoresistive magnetic head 有权
标题翻译：差分磁阻磁头
公开(公告)号：US08174799B2
公开(公告)日：2012-05-08
申请号：US12218860
申请日：2008-07-17
申请人： Hiroyuki Hoshiya , Kenichi Meguro , Katsumi Hoshino , You Sato , Hiroyuki Katada , Kazuhiro Nakamoto
发明人： Hiroyuki Hoshiya , Kenichi Meguro , Katsumi Hoshino , You Sato , Hiroyuki Katada , Kazuhiro Nakamoto
IPC分类号： G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3929 , G11B2005/3996
摘要： Embodiments of the present invention help to provide a single element type differential magnetoresistive magnetic head capable of achieving high resolution and high manufacturing stability. According to one embodiment, a magnetoresistive layered film is formed by stacking an underlayer film, an antiferromagnetic film, a ferromagnetic pinned layer, a non-magnetic intermediate layer, a soft magnetic free layer, a long distance antiparallel coupling layered film, and a differential soft magnetic free layer. The long distance antiparallel coupling layered film exchange-couples the soft magnetic free layer and the differential soft magnetic free layer in an antiparallel state with a distance of about 3 nanometers through 20 nanometers. By manufacturing the single element type differential magnetoresistive magnetic head using the magnetoresistive layered film, it becomes possible to achieve the high resolution and the high manufacturing stability without spoiling the GMR effect.
摘要翻译：本发明的实施例有助于提供能够实现高分辨率和高制造稳定性的单元型差分磁阻磁头。根据一个实施例，通过堆叠下层膜，反铁磁性膜，铁磁性钉扎层，非磁性中间层，软磁性自由层，长距离反向平行耦合层叠膜和差动层叠膜形成磁阻层叠膜软磁自由层。长距离反平行耦合分层膜将软磁自由层和差分软磁自由层以约3纳米至20纳米的距离反平行状态进行交换耦合。通过使用磁阻层叠膜制造单元型差分磁阻磁头，可以实现高分辨率和高制造稳定性而不破坏GMR效应。

7. 发明申请

US20070188934A1 Magneto-resistive head having a stable response property without longitudinal biasing and method for manufacturing the same 失效
标题翻译：具有稳定的响应特性而不具有纵向偏置的磁阻头及其制造方法
公开(公告)号：US20070188934A1
公开(公告)日：2007-08-16
申请号：US11698251
申请日：2007-01-24
申请人： Kenichi Meguro , Hiroyuki Katada , Katsumi Hoshino , Hiroyuki Hoshiya
发明人： Kenichi Meguro , Hiroyuki Katada , Katsumi Hoshino , Hiroyuki Hoshiya
IPC分类号： G11B5/33
CPC分类号： G11B5/399 , B82Y25/00 , G01R33/093 , G11B5/3906 , H01L43/08 , H01L43/12
摘要： Embodiments in accordance with the present invention provide a method of manufacturing a magneto-resistive head which can realize high sensitivity and good linear response characteristics with low noise even if a track width becomes narrower. A uniaxial anisotropy unaffected by annealing which is due to the orientation of the crystal grain growth direction, is induced in a magnetic layer. The free magnetic layer has the synthetic antiferromagnetic construction: first magnetic layer/interlayer antiferromagnetic coupling layer/second magnetic layer, the magnitude of the antiferromagnetic coupling is adjusted, and linear response characteristics are obtained even if a longitudinal biasing field applying mechanism is not provided.
摘要翻译：根据本发明的实施例提供一种制造磁阻头的方法，即使轨道宽度变窄，其也可以实现具有低噪声的高灵敏度和良好的线性响应特性。在磁性层中诱发不受退火影响的单轴各向异性，这是由于晶粒生长方向的取向引起的。自由磁性层具有合成的反铁磁结构：第一磁性层/层间反铁磁耦合层/第二磁性层，调整反铁磁耦合的大小，并且即使没有提供纵向偏置场施加机构也可获得线性响应特性。

8. 发明授权

US07697245B2 CPP-GMR magnetic head having GMR-screen layer 有权
标题翻译：具有GMR屏幕层的CPP-GMR磁头
公开(公告)号：US07697245B2
公开(公告)日：2010-04-13
申请号：US11584397
申请日：2006-10-19
申请人： Hiroyuki Hoshiya , Katsumi Hoshino , Kenichi Meguro , Yo Sato , Hiroyuki Katada
发明人： Hiroyuki Hoshiya , Katsumi Hoshino , Kenichi Meguro , Yo Sato , Hiroyuki Katada
IPC分类号： G11B5/39
CPC分类号： G11B5/3929 , B82Y10/00 , B82Y25/00 , G11B2005/3996
摘要： A spin-valve type magnetic head which has sufficiently high output is provided. In one embodiment, a structure in which high output coexists with high stability is achieved by letting a GMR-effect and a current-path-confinement effect manifest themselves at the same time in a GMR-screen layer consisting of a ferromagnetic metal spike-like part and a half-covering oxide layer.
摘要翻译：提供具有足够高输出的自旋阀式磁头。在一个实施例中，通过在由铁磁性金属尖状形成的GMR屏幕层中同时显现GMR效应和电流路径限制效应来实现高输出共存高稳定性的结构半覆盖氧化层。

9. 发明授权

US07440241B2 Magnetoresistive head using longitudinal biasing method with 90-degree magnetic interlayer coupling and manufacturing method thereof 失效
标题翻译：磁阻头使用90度磁性层间耦合的纵向偏置方法及其制造方法
公开(公告)号：US07440241B2
公开(公告)日：2008-10-21
申请号：US11243298
申请日：2005-10-03
申请人： Katsumi Hoshino , Hiroyuki Hoshiya , Hiroyuki Katada , Kenichi Meguro
发明人： Katsumi Hoshino , Hiroyuki Hoshiya , Hiroyuki Katada , Kenichi Meguro
IPC分类号： G11B5/39
CPC分类号： G11B5/39
摘要： A magnetoresistive head and a fabricating method thereof accomplishing high read sensitivity and excellent linear response with low noise even if track width narrowing makes progress are provided. In one embodiment, using a magnetoresistive film having a laminated body of a pinned layer/an intermediate layer/a free layer/a separate layer/a first ferromagnetic layer/a 90-degree magnetic interlayer coupling layer/a second ferromagnetic layer, and the magnetizations of both the pinned layer and the second ferromagnetic layer are fixed nearly in the direction along the sensor height. On the other hand, the magnetizations of the first ferromagnetic layer and the second ferromagnetic layer have an interlayer interaction being directed in nearly orthogonal directions to each other through the 90-degree magnetic interlayer coupling layer, and the first ferromagnetic layer has a magnetization directed nearly in the direction along the track width in zero external magnetic field. According to this, the first ferromagnetic layer applies a longitudinal biasing field to the free layer nearly in the direction along the track width.
摘要翻译：磁阻头及其制造方法即使进行轨道宽度变窄也能实现高读取灵敏度和低噪音的良好线性响应。在一个实施例中，使用具有钉扎层/中间层/自由层/分离层/第一铁磁层/ 90度磁性层间结合层/第二铁磁层的层叠体的磁阻膜，被钉扎层和第二铁磁层两者的磁化几乎沿着传感器高度的方向固定。另一方面，第一铁磁层和第二铁磁层的磁化通过90度的磁性层间结合层彼此在几乎正交的方向上相互作用，并且第一铁磁层的磁化强度几近沿着磁道宽度方向在零外部磁场中。据此，第一铁磁层几乎沿着轨道宽度的方向向自由层施加纵向偏置场。

10. 发明申请

US20060103991A1 Magnetoresistive head using longitudinal biasing method with 90-degree magnetic interlayer coupling and manufacturing method thereof 失效
标题翻译：磁阻头使用90度磁性层间耦合的纵向偏置方法及其制造方法
公开(公告)号：US20060103991A1
公开(公告)日：2006-05-18
申请号：US11243298
申请日：2005-10-03
申请人： Katsumi Hoshino , Hiroyuki Hoshiya , Hiroyuki Katada , Kenichi Meguro
发明人： Katsumi Hoshino , Hiroyuki Hoshiya , Hiroyuki Katada , Kenichi Meguro
IPC分类号： G11B5/127 , G11B5/33
CPC分类号： G11B5/39
摘要： A magnetoresistive head and a fabricating method thereof accomplishing high read sensitivity and excellent linear response with low noise even if track width narrowing makes progress are provided. In one embodiment, using a magnetoresistive film having a laminated body of a pinned layer/an intermediate layer/a free layer/a separate layer/a first ferromagnetic layer/a 90-degree magnetic interlayer coupling layer/a second ferromagnetic layer, and the magnetizations of both the pinned layer and the second ferromagnetic layer are fixed nearly in the direction along the sensor height. On the other hand, the magnetizations of the first ferromagnetic layer and the second ferromagnetic layer have an interlayer interaction being directed in nearly orthogonal directions to each other through the 90-degree magnetic interlayer coupling layer, and the first ferromagnetic layer has a magnetization directed nearly in the direction along the track width in zero external magnetic field. According to this, the first ferromagnetic layer applies a longitudinal biasing field to the free layer nearly in the direction along the track width.
摘要翻译：磁阻头及其制造方法即使进行轨道宽度变窄也能实现高读取灵敏度和低噪音的良好线性响应。在一个实施例中，使用具有钉扎层/中间层/自由层/分离层/第一铁磁层/ 90度磁性层间结合层/第二铁磁层的层叠体的磁阻膜，被钉扎层和第二铁磁层两者的磁化几乎沿着传感器高度的方向固定。另一方面，第一铁磁层和第二铁磁层的磁化通过90度的磁性层间结合层彼此在几乎正交的方向上相互作用，并且第一铁磁层的磁化强度几近沿着磁道宽度方向在零外部磁场中。据此，第一铁磁层几乎沿着轨道宽度的方向向自由层施加纵向偏置场。

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