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1. 发明申请

US20080081219A1 Magnetoresistance effect element and method of producing the same 审中-公开
标题翻译：磁阻效应元件及其制造方法
公开(公告)号：US20080081219A1
公开(公告)日：2008-04-03
申请号：US11800566
申请日：2007-05-07
申请人： Kouji Hirano , Mitsuru Otagiri
发明人： Kouji Hirano , Mitsuru Otagiri
IPC分类号： G11B5/39 , G11B5/127 , G11B5/33
CPC分类号： G11B5/3909 , B82Y10/00 , B82Y25/00 , B82Y40/00 , G01R33/093 , G11B5/3906 , G11C11/16 , H01F10/3254 , H01F10/3272 , H01F41/307 , H01L43/08 , H01L43/12 , Y10T428/1107
摘要： The magnetoresistance effect element includes: a magnetization fixing layer; a barrier layer formed on the magnetization fixing layer; and a free layer formed on the barrier layer. The method of producing the magnetoresistance effect element comprises the steps of: forming the magnetization fixing layer on a substrate; forming a metal film as the barrier layer, wherein one part of the metal film on the magnetization fixing layer side is in an amorphous state or a refined crystal state and the other part thereof on the other side is in a crystal state; natural-oxidizing the metal film in an oxidizing atmosphere; forming the free layer on the oxidized metal layer.
摘要翻译：磁阻效应元件包括：磁化固定层; 形成在所述磁化固定层上的阻挡层; 和形成在阻挡层上的自由层。制造磁阻效应元件的方法包括以下步骤：在基板上形成磁化固定层; 形成金属膜作为阻挡层，其中，所述磁化固定层侧的所述金属膜的一部分处于非晶态或精晶状态，所述另一侧的另一部分为晶体状态; 在氧化气氛中对金属膜进行天然氧化; 在氧化金属层上形成自由层。

2. 发明授权

US5930085A Magnetoresistive head and magnetic recording/reproducing apparatus 失效
标题翻译：磁阻磁头和磁记录/重放装置
公开(公告)号：US5930085A
公开(公告)日：1999-07-27
申请号：US843831
申请日：1997-04-21
申请人： Yasuhiro Kitade , Kazuo Kobayashi , Hideyuki Kikuchi , Hitoshi Kishi , Mitsuru Otagiri
发明人： Yasuhiro Kitade , Kazuo Kobayashi , Hideyuki Kikuchi , Hitoshi Kishi , Mitsuru Otagiri
IPC分类号： G01R33/09 , G11B5/00 , G11B5/39 , H01F10/08 , H01F10/32 , H01L43/08 , H01L43/10 , G11B5/127
CPC分类号： B82Y25/00 , B82Y10/00 , G01R33/093 , G11B5/00 , G11B5/3903 , G11B5/3925 , G11B5/3967 , H01F10/3268 , H01L43/08 , H01L43/10 , G11B2005/3996 , Y10S428/90
摘要： The present invention relates to a magnetoresistive head having a spin valve MR film for use in a magnetic sensor, a magnetic head or the like. Of two ferromagnetic layers divided by a nonmagnetic metal film, at least ferromagnetic layer on the side being in contact with an antiferromagnetic layer is formed by a cobalt-nickel-iron alloy including at the rate of 5 to 40 atoms % of a nickel and 30 to 95 atoms % of cobalt.
摘要翻译：本发明涉及具有用于磁传感器，磁头等的自旋阀MR膜的磁阻头。在由非磁性金属膜分隔的两个铁磁层中，至少与反铁磁性层接触的一侧的铁磁层由钴 - 镍 - 铁合金形成，钴 - 镍 - 铁合金包括以5至40原子％的镍和30 至95原子％的钴。

3. 发明授权

US5661621A Magnetoresistive head 失效
标题翻译：磁阻头
公开(公告)号：US5661621A
公开(公告)日：1997-08-26
申请号：US509600
申请日：1995-07-31
申请人： Kazuo Kobayashi , Hideyuki Kikuchi , Hitoshi Kishi , Mitsuru Otagiri
发明人： Kazuo Kobayashi , Hideyuki Kikuchi , Hitoshi Kishi , Mitsuru Otagiri
IPC分类号： G11B5/39
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/3903 , G11B5/3925 , G11B5/3929 , G11B5/3967 , G11B2005/3996
摘要： A magnetoresistive head used for reading information signals from a magnetic recording medium using a spin valve magnetoresistance effect, comprises a first ferromagnetic layer and a second ferromagnetic layer both are separated by a first nonmagnetic metal layer, a hard magnetic layer formed so as to contact to the second ferromagnetic layer, and a third ferromagnetic layer formed on the hard magnetic layer via a second nonmagnetic metal layer for shutting off exchange coupling and coupled to the second ferromagnetic layer and the hard magnetic layer by static magnetic combination.
摘要翻译：用于使用自旋阀磁阻效应从磁记录介质读取信息信号的磁阻头包括第一铁磁层和第二铁磁层，它们都由第一非磁性金属层分离，形成为与第二铁磁层和通过第二非磁性金属层形成在硬磁性层上的第三铁磁层，用于切断交换耦合并通过静磁组合耦合到第二铁磁层和硬磁性层。

4. 发明申请

US20080171232A1 Magnetic head and method of producing the same 审中-公开
标题翻译：磁头及其制造方法
公开(公告)号：US20080171232A1
公开(公告)日：2008-07-17
申请号：US11977205
申请日：2007-10-24
申请人： Tomoka Aoki , Junichi Hashimoto , Mitsuru Otagiri , Hideyuki Akimoto
发明人： Tomoka Aoki , Junichi Hashimoto , Mitsuru Otagiri , Hideyuki Akimoto
IPC分类号： G11B5/39 , C25D5/10
CPC分类号： C25D5/10 , G11B5/112 , G11B5/3106 , G11B5/3967 , G11B5/40 , Y10T428/1121
摘要： In the magnetic head, a lower shielding layer and an upper shielding layer of a read-head and a lower magnetic pole of a write-head are electrically connected to a substrate so as to prevent damage of an MR element caused by static electricity and so as not to badly influence reading characteristics of a read-head. The magnetic head comprises: a read-head having a lower shielding layer and an upper shielding layer, which are electrically connected to a substrate via a shunt resistance; and a write-head having a lower magnetic pole, which is electrically connected to the substrate via the shunt resistance, wherein the lower shielding layer and the upper shielding layer are electrically connected to the substrate via a conductive layer, and the lower magnetic pole is electrically connected to the substrate via a conductive layer, which is formed as a base layer of the lower magnetic pole.
摘要翻译：在磁头中，写头的读头和下磁极的下屏蔽层和上屏蔽层电连接到基板，以防止由静电导致的MR元件的损坏等不会严重影响阅读器的阅读特性。磁头包括：具有下屏蔽层和上屏蔽层的读头，其通过分流电电连接到基板; 以及具有下磁极的写头，其经由分流电阻电连接到所述衬底，其中所述下屏蔽层和所述上屏蔽层经由导电层电连接到所述衬底，并且所述下磁极为通过形成为下磁极的基底层的导电层与基板电连接。

5. 发明申请

US20070211380A1 Perpendicular magnetic head 审中-公开
标题翻译：垂直磁头
公开(公告)号：US20070211380A1
公开(公告)日：2007-09-13
申请号：US11483318
申请日：2006-07-07
申请人： Hideyuki Akimoto , Mitsuru Otagiri , Hiroshi Shirataki
发明人： Hideyuki Akimoto , Mitsuru Otagiri , Hiroshi Shirataki
IPC分类号： G11B5/147
CPC分类号： G11B5/1278 , G11B5/1872 , G11B5/3116 , G11B5/3146
摘要： The perpendicular magnetic head is capable of solving the problems of side track erasing and pole erasing. The perpendicular magnetic head of the present invention comprises a write-head, which includes a main magnetic pole emitting magnetic fluxes toward a recording medium. An end face of a pole end is formed into a T-shape. A longitudinal pole section of the pole end is made of a low Bs magnetic thin film, whose end face is formed into a rectangle. A transverse pole section of the pole end is made of a high Bs magnetic thin film, whose end face is formed into a rectangle. The low Bs magnetic thin film and the high Bs magnetic thin film are determined by the formula: (area of the end face of the low Bs magnetic thin film)×(saturation magnetic flux density of the low Bs magnetic thin film)>(area of the end face of the high Bs magnetic thin film)×(saturation magnetic flux density of the high Bs magnetic thin film).
摘要翻译：垂直磁头能够解决侧轨擦除和磁极擦除的问题。本发明的垂直磁头包括一个写入头，它包括一个朝着记录介质发射磁通的主磁极。极端的端面形成为T字形。极端的纵极部由低Bs磁性薄膜制成，其端面形成为矩形。极端的横极部由高Bs磁性薄膜制成，其端面形成为矩形。低Bs磁性薄膜和高Bs磁性薄膜由以下公式确定：（低Bs磁性薄膜的端面的面积）×（低Bs磁性薄膜的饱和磁通密度）>（面积的高Bs磁性薄膜的端面）x（高Bs磁性薄膜的饱和磁通密度）。

6. 发明授权

US06376108B1 Magnetic material and magnetic head using the same and magnetic storage device having thereof 失效
标题翻译：磁性材料和使用该磁性材料的磁头以及具有该磁性材料的磁存储装置
公开(公告)号：US06376108B1
公开(公告)日：2002-04-23
申请号：US09460064
申请日：1999-12-14
申请人： Mitsuru Otagiri , Sanae Takefusa , Yuko Miyake
发明人： Mitsuru Otagiri , Sanae Takefusa , Yuko Miyake
IPC分类号： G11B566
CPC分类号： G11B5/3967 , G11B5/3109 , G11B5/3113 , H01F1/14708 , H01F10/14 , Y10S428/90 , Y10T428/11 , Y10T428/24942
摘要： This invention is to provide a magnetic head consisting of NiFeMo alloy which assures excellent high frequency characteristic and makes easy formation of magnetic domain structure without any heat treatment and thereby contributes to improvement of magnetic recording capability. Magnetic material for a magnetic head includes Ni, Fe and Mo. The composition ratio of NiFeMo is selected under the condition where Ni is 77 to 82 atom %, Fe is 15 to 21 atom %, Mo is under 6 atom %, and magnetic strain constant &lgr;s is in the range of −1×10−6≦&lgr;s ≦10−6.
摘要翻译：本发明提供一种由NiFeMo合金组成的磁头，其确保优异的高频特性，并且容易地形成磁畴结构而无需任何热处理，从而有助于提高磁记录能力。用于磁头的磁性材料包括Ni，Fe和Mo。NiFeMo的组成比在Ni为77至82原子％，Fe为15至21原子％，Mo为6原子％，磁应变恒定的羔羊在-1x10-6 <= lambds <= 10-6的范围内。

7. 发明授权

US06826013B2 Thin film magnetic head 失效
标题翻译：薄膜磁头
公开(公告)号：US06826013B2
公开(公告)日：2004-11-30
申请号：US09867822
申请日：2001-05-30
申请人： Mitsuru Otagiri , Yuko Miyake , Sanae Shimizu
发明人： Mitsuru Otagiri , Yuko Miyake , Sanae Shimizu
IPC分类号： G11B521
CPC分类号： G11B5/00 , G11B5/3109 , G11B5/3143 , G11B5/3146 , G11B5/3163
摘要： A thin film magnetic head comprising a substrate, a lower magnetic pole provided on the substrate, a write gap layer located on the lower magnetic pole, and an upper magnetic pole located on the gap layer, the upper magnetic pole including a plating base layer in contact with the gap layer, wherein the plating base layer of the upper magnetic pole is made of a magnetic film having a saturation magnetic flux density of 1.2 T or larger. The thin film magnetic head has an increased recording density, and is adapted to recording at an increased frequency.
摘要翻译：一种薄膜磁头，包括基板，设置在基板上的下磁极，位于下磁极上的写间隙层和位于间隙层上的上磁极，上磁极包括镀基底层与间隙层接触，其中上磁极的电镀基层由饱和磁通密度为1.2T或更大的磁膜制成。薄膜磁头具有增加的记录密度，并且适于以增加的频率进行记录。

8. 发明授权

US5729411A Magnetoresistive head and magnetoresistive recording/reproducing drive with an antiferromagnetic layer of high corrosion resistance 失效
标题翻译：磁阻磁头和具有高抗腐蚀性的反铁磁层的磁阻记录/再现驱动
公开(公告)号：US5729411A
公开(公告)日：1998-03-17
申请号：US677612
申请日：1996-07-09
申请人： Hitoshi Kishi , Kazuo Kobayashi , Atsushi Tanaka , Yasuhiro Kitade , Yuko Miyake , Mitsuru Otagiri
发明人： Hitoshi Kishi , Kazuo Kobayashi , Atsushi Tanaka , Yasuhiro Kitade , Yuko Miyake , Mitsuru Otagiri
IPC分类号： G11B5/31 , G11B5/39 , G11B5/40
CPC分类号： G11B5/39 , G11B5/3106 , G11B5/3163 , G11B5/40
摘要： A magnetoresistive head in which an antiferromagnetic material having superior corrosion resistance is used is disclosed. In the magnetoresistive head, a pair of anti-ferromagnetic layers 24a and 24b are formed while contacting with a soft magnetic layer 23, and the antiferromagnetic layers 24a and 24b are made of a PdMn film.
摘要翻译：公开了一种使用具有优异耐腐蚀性的反铁磁材料的磁阻头。在磁阻头中，与软磁性层23接触形成一对反铁磁性层24a，24b，反铁磁层24a，24b由PdMn膜构成。

9. 发明申请

US20080291571A1 MAGNETIC HEAD AND INFORMATION STORAGE DEVICE 审中-公开
标题翻译：磁头和信息存储设备
公开(公告)号：US20080291571A1
公开(公告)日：2008-11-27
申请号：US12112741
申请日：2008-04-30
申请人： Yuko Miyake , Masaaki Matsuoka , Mitsuru Otagiri
发明人： Yuko Miyake , Masaaki Matsuoka , Mitsuru Otagiri
IPC分类号： G11B5/17
CPC分类号： G11B5/1278 , G11B5/147 , G11B5/3116
摘要： A magnetic head of the present invention includes a magnetic pole that faces a surface of a recording medium, moves relative to the surface in a direction along the surface, and produces a line of magnetic force intersecting the surface of the recording medium; and a coil that excites the magnetic pole, wherein the magnetic pole includes a laminate with a coercivity of 800 A/m or less, the laminate including two or more layers stacked in a direction along the movement relative to the surface of the recording medium, the two or more layers including a first magnetic layer located at a frontmost position of the movement, and a second magnetic layer located at a rearmost position of the movement, the second magnetic layer having a saturation magnetic flux density higher than a saturation magnetic flux density of the first magnetic layer.
摘要翻译：本发明的磁头包括面向记录介质表面的磁极，沿着表面的方向相对于表面移动，并产生与记录介质的表面相交的磁力线; 励磁磁极的线圈，其中所述磁极包括矫顽力为800A / m以下的层压体，所述层压体包括沿着相对于所述记录介质的表面的移动方向上堆叠的两层或更多层，所述两层或多层包括位于所述运动的最前面位置处的第一磁性层和位于所述运动的最后位置的第二磁性层，所述第二磁性层具有高于饱和磁通密度的饱和磁通密度的第一磁性层。

10. 发明申请

US20080061773A1 Method of evaluating a magnetoresistance effect read head 审中-公开
标题翻译：评估磁阻效应读头的方法
公开(公告)号：US20080061773A1
公开(公告)日：2008-03-13
申请号：US11703516
申请日：2007-02-07
申请人： Mitsuru Otagiri , Masato Matsubara
发明人： Mitsuru Otagiri , Masato Matsubara
IPC分类号： G01R33/12
CPC分类号： G01R33/093 , B82Y25/00
摘要： A method of evaluating can evaluate the bias magnetic field strength of hard films that construct a magnetoresistance effect read head, the magnetic coercivity of the hard films, and variations in the magnetic domain of shield films from measurement results for the resistance-parallel magnetic field strength characteristics. A magnetizing magnetic field is applied in a direction parallel to the air bearing surface of a magnetoresistance effect read head equipped with hard films to magnetize the hard films in a direction of a horizontal bias magnetic field applied to a free layer of the read element. After this, the resistance of the read element is detected and the resistance-parallel magnetic field strength characteristics of the read head are measured while applying a test magnetic field with increasing and decreasing intensity in a direction parallel to the horizontal bias magnetic field. The bias magnetic field strength of the hard films is evaluated from peaks appearing in the resistance-parallel magnetic field strength characteristics.
摘要翻译：一种评估方法可以评估构成磁阻效应读取头的硬膜的偏磁场强度，硬膜的磁矫顽力和屏蔽膜的磁畴的变化与电阻 - 平行磁场强度的测量结果特点磁化磁场沿平行于装备有硬膜的磁阻效应读取头的空气轴承表面的方向施加，以在施加到读取元件的自由层的水平偏置磁场的方向上磁化硬膜。此后，检测读取元件的电阻，并且在平行于水平偏置磁场的方向上施加具有增加和减小的强度的测试磁场来测量读取磁头的电阻 - 并联磁场强度特性。由电阻 - 平行磁场强度特性出现的峰值评估硬膜的偏磁场强度。

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