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    Magnetic head
    1.
    发明授权
    Magnetic head 失效
    磁头

    公开(公告)号：US6120919A

    公开(公告)日：2000-09-19

    申请号：US114946

    申请日：1998-07-14

    申请人： Satoshi Shigematsu ,  Takao Imagawa ,  Koichi Nishioka ,  Hiroshi Kamio ,  Katsuhisa Usami

    发明人： Satoshi Shigematsu ,  Takao Imagawa ,  Koichi Nishioka ,  Hiroshi Kamio ,  Katsuhisa Usami

    IPC分类号： G11B5/012 ,  G11B5/39 ,  G11B5/66

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3903 ,  G11B2005/3996 ,  Y10S428/90 ,  Y10T428/1121 ,  Y10T428/115 ,  Y10T428/1193

    摘要： Magnetoresistive and spin valve heads have a layered structure. Common to each of the layered structures of these heads is the combination of a soft-magnetic layer of essentially NiFe near a spacer layer of essentially Ta, which is used for insuring (111) crystal orientation of the NiFe layer. An isolate layer is interposed between the spacer layer and the soft-magnetic layer to prevent a diffusion boundary from being created at the interface of these layers which tends to degrade the soft-magnetic property of the NiFe layer, especially when the thickness of the soft-magnetic layer is 10 and nm or less. The isolate layer is one of a composition in which the principal component is a magnetic element that is not solid soluble with Ta, a composition in which the principal component is a non-magnetic element that is not solid soluble with Ni and Fe, a composition in which the principal component is at least one of the elements of Co, Fe, Ti, V, Zr, Nb, Mo, Hf, W, Tc, Ru, Rh, Pd, Ag, Re, Os, Ir, Pt and Au; or a composition in which the principal component is of Co.sub.(100-x) Fe.sub.(x), where 20.gtoreq.X>O. The isolate layer has a structure that is amorphous, an fcc structure.

    摘要翻译： 磁阻和旋转阀头具有分层结构。 这些磁头的每个层状结构的共同之处在于用于确保NiFe层的（111）晶体取向的基本上Ta的间隔层附近的基本上NiFe的软磁性层的组合。 在间隔层和软磁性层之间插入隔离层，以防止在这些层的界面处产生扩散边界，这倾向于降低NiFe层的软磁特性，特别是当软质的厚度 磁性层为10nm以下。 隔离层是其中主要成分是与Ta不固溶的磁性元素的组合物之一，其中主要成分是不与Ni和Fe固溶的非磁性元素的组成，组成 其中主要成分是Co，Fe，Ti，V，Zr，Nb，Mo，Hf，W，Tc，Ru，Rh，Pd，Ag，Re，Os，Ir，Pt和Au中的至少一种元素 ; 或其中主成分为Co（100-x）Fe（x）的组合物，其中20> = X> O。 隔离层具有无定形，fcc结构的结构。

    Magnetic head
    2.
    发明授权
    Magnetic head 有权
    磁头

    公开(公告)号：US06319622B1

    公开(公告)日：2001-11-20

    申请号：US09633170

    申请日：2000-08-04

    申请人： Satoshi Shigematsu ,  Takao Imagawa ,  Koichi Nishioka ,  Hiroshi Kamio ,  Katsuhisa Usami

    发明人： Satoshi Shigematsu ,  Takao Imagawa ,  Koichi Nishioka ,  Hiroshi Kamio ,  Katsuhisa Usami

    IPC分类号： G11B566

    CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/012 ,  G11B5/3903 ,  G11B2005/3996 ,  Y10S428/90 ,  Y10T428/1121 ,  Y10T428/115 ,  Y10T428/1193

    摘要： Magnetoresistive and spin valve heads have a layered structure. Common to each of the layered structures of these heads is the combination of a soft-magnetic layer of essentially NiFe near a spacer layer of essentially Ta, which is used for insuring (111) crystal orientation of the NiFe layer. An isolate layer is interposed between the spacer layer and the soft-magnetic layer to prevent a diffusion boundary from being created at the interface of these layers which tends to degrade the soft-magnetic property of the NiFe layer, especially when the thickness of the soft-magnetic layer is 10 and nm or less. The isolate layer is one of a composition in which the principal component is a magnetic element that is not solid soluble with Ta, a composition in which the principal component is a non-magnetic element that is not solid soluble with Ni and Fe, a composition in which the principal component is at least one of the elements of Co, Fe, Ti, V, Zr, Nb, Mo, Hf, W, Tc, Ru, Rh, Pd, Ag, Re, Os, Ir, Pt and Au; or a composition in which the principal component is of Co(100−X)Fe(X), where 20≧X>O. The isolate layer has a structure that is amorphous, an fcc structure.

    摘要翻译： 磁阻和旋转阀头具有分层结构。 这些磁头的每个层状结构的共同之处在于用于确保NiFe层的（111）晶体取向的基本上Ta的间隔层附近的基本上NiFe的软磁性层的组合。 在间隔层和软磁性层之间插入隔离层，以防止在这些层的界面处产生扩散边界，这倾向于降低NiFe层的软磁特性，特别是当软质的厚度 磁性层为10nm以下。 隔离层是其中主要成分是与Ta不固溶的磁性元素的组合物之一，其中主要成分是不与Ni和Fe固溶的非磁性元素的组成，组成 其中主要成分是Co，Fe，Ti，V，Zr，Nb，Mo，Hf，W，Tc，Ru，Rh，Pd，Ag，Re，Os，Ir，Pt和Au中的至少一种元素 ; 或其中主成分为Co（100-X）Fe（X）的组合物，其中20> = X> O。 隔离层具有无定形，fcc结构的结构。

    Magnetic head of magnetoresistance effect type with high resistance to external stress
    7.
    发明申请
    Magnetic head of magnetoresistance effect type with high resistance to external stress 有权
    具有高耐外部应力的磁阻效应型磁头

    公开(公告)号：US20080074803A1

    公开(公告)日：2008-03-27

    申请号：US11900533

    申请日：2007-09-11

    申请人： Naoki Koyama ,  Koichi Nishioka ,  Kouji Okazaki ,  Shuichi Kojima ,  Azusa Hori ,  Satoshi Shigematsu ,  Yukimasa Okada

    发明人： Naoki Koyama ,  Koichi Nishioka ,  Kouji Okazaki ,  Shuichi Kojima ,  Azusa Hori ,  Satoshi Shigematsu ,  Yukimasa Okada

    IPC分类号： G11B5/33

    CPC分类号： G11B5/39

    摘要： Embodiments of the present invention prevent a pinned layer from suffering magnetization reversal by external stress in a magnetic head of magnetoresistance effect type which has a synthetic ferri-magnetic pinned layer structure with an antiferromagnetic layer of IrMnCr. According to one embodiment, a read element of a magnetoresistive head is made up of a antiferromagnetic layer, a first pinned layer, an antiferromagnetically coupled layer 4, a second pinned layer, and a free layer, which are stacked one over another. The first and second pinned layers and have a composition of Co75Fe25 and Co95Fe5, respectively, and a thickness of 18 Å (3.5 nm·T) and 21 Å (3.9 nm·T), respectively, so as to reduce the difference in anisotropic energy between the first pinned layer in contact with the antiferromagnetic layer and the second pinned layer in contact with the nonmagnetic conductive layer. In this way it is possible to reduce the difference |λ1−λ2| in magnetostriction constant between the first and second pinned layers and below 5.0×10−6. Thus it is possible to protect the pinned layer from external stress and magnetic field which rotate the direction of magnetization.

    摘要翻译： 本发明的实施例通过具有IrMnCr反铁磁性层的合成铁磁性固定层结构的磁阻效应型磁头防止被钉扎层受到外部应力的磁化反转。 根据一个实施例，磁阻头的读取元件由反铁磁层，第一被钉扎层，反铁磁耦合层4，第二钉扎层和自由层叠加而成。 第一和第二被钉扎层分别具有Co Fe 25 和 ，并且分别具有18（3.5nm.T）和21（3.9nm.T）的厚度，以便减少与反铁磁层接触的第一被钉扎层与第二被钉扎层之间的各向异性能的差异 与非磁性导电层接触。 以这种方式，可以减小| lambda1-lambda2 |的差异 在第一和第二被钉扎层之间的磁致伸缩常数以及5.0×10 -6以下。 因此，可以保护被钉扎层免受旋转磁化方向的外部应力和磁场。

    Magnetic head of magnetoresistance effect type with high resistance to external stress
    8.
    发明授权
    Magnetic head of magnetoresistance effect type with high resistance to external stress 有权
    具有高耐外部应力的磁阻效应型磁头

    公开(公告)号：US07957109B2

    公开(公告)日：2011-06-07

    申请号：US11900533

    申请日：2007-09-11

    申请人： Naoki Koyama ,  Koichi Nishioka ,  Kouji Okazaki ,  Shuichi Kojima ,  Azusa Hori ,  Satoshi Shigematsu ,  Yukimasa Okada

    发明人： Naoki Koyama ,  Koichi Nishioka ,  Kouji Okazaki ,  Shuichi Kojima ,  Azusa Hori ,  Satoshi Shigematsu ,  Yukimasa Okada

    IPC分类号： G11B5/39 ,  G11B5/127

    CPC分类号： G11B5/39

    摘要： A tunnel magnetoresistance effect magnetic head having between magnetic shield layers, an antiferromagnetic layer, a pinned layer which has the direction of magnetization pinned by exchange coupling with the antiferromagnetic layer, an insulating layer, and a free layer whose direction of magnetization rotates relatively to external magnetic fields, wherein the antiferromagnetic layer is of an antiferromagnetic substance composed mainly of IrMn, the pinned layer is made up of a first pinned layer of CoFe alloy in contact with the antiferromagnetic layer and a second pinned layer of CoFeB alloy which is antiferromagnetically coupled with the first pinned layer, and the first and second pinned layers have the amount of magnetization such that the difference M1−M2 is in the range of 0

    摘要翻译： 具有磁屏蔽层之间的隧道磁阻效应磁头，反铁磁层，具有通过与反铁磁层交换耦合固定的磁化方向的被钉扎层，绝缘层和磁化方向相对于外部的自由层 磁场，其中反铁磁层是主要由IrMn组成的反铁磁性物质，被钉扎层由与反铁磁层接触的第一CoFe合金层和与铁磁性合金反铁磁合金的第二被钉扎层组成 第一被钉扎层，并且第一和第二钉扎层具有磁化量，使得差值M1-M2在0

    Magnetoresistive head and manufacturing method thereof
    9.
    发明授权
    Magnetoresistive head and manufacturing method thereof 失效
    磁阻头及其制造方法

    公开(公告)号：US07209326B2

    公开(公告)日：2007-04-24

    申请号：US10804564

    申请日：2004-03-18

    申请人： Koichi Nishioka ,  Satoshi Shigematsu

    发明人： Koichi Nishioka ,  Satoshi Shigematsu

    IPC分类号： G11B5/39

    CPC分类号： G11B5/3903 ,  B82Y10/00 ,  G11B2005/0008 ,  Y10T29/49034

    摘要： A magnetoresistive head in which a pinned layer comprises two films, i.e., a ferromagnetic film A and a ferromagnetic B anti-ferromagnetically coupled to each other and a anti-ferromagnetic coupling film for separating the two ferromagnetic films A and B, where the coercivity of the ferromagnetic film alone is 200 (Oe) or more and the coercivity of the ferromagnetic film alone is 20 (Oe) or less. The compositions for the ferromagnetic film A and the ferromagnetic film B, when expressed by Co100-YFeY (at %) are: ferromagnetic film A: 80≧Y≧40, and ferromagnetic film B: 20≧Y≧0, where the material for the film in contact with the ferromagnetic film A is Ru, Ta, NiFeCr, Cu or NiFe.

    摘要翻译： 磁阻头，其中被钉扎层包括两个膜，即铁磁膜A和反铁磁性地彼此耦合的铁磁体B和用于分离两个铁磁膜A和B的反铁磁耦合膜，其中矫顽力 铁磁膜单独为200（Oe）以上，单独的铁磁膜的矫顽力为20（Oe）以下。 当由Co 100 Al Y Y Y（at％）表示时，铁磁膜A和铁磁膜B的组成为：铁磁膜A：80> = Y > 40，铁磁膜B：20> = Y> = 0，其中与铁磁膜A接触的膜的材料为Ru，Ta，NiFeCr，Cu或NiFe。

    Data conversion/output apparatus for digitalizing sensor data and outputting through a sensor array
    10.
    发明授权
    Data conversion/output apparatus for digitalizing sensor data and outputting through a sensor array 失效
    用于数字化传感器数据并通过传感器阵列输出的数据转换/输出装置

    公开(公告)号：US08432470B2

    公开(公告)日：2013-04-30

    申请号：US13032508

    申请日：2011-02-22

    申请人： Satoshi Shigematsu ,  Hiroki Morimura

    发明人： Satoshi Shigematsu ,  Hiroki Morimura

    IPC分类号： H04N3/14 ,  H04N5/335

    CPC分类号： H04N5/37455 ,  H04N5/355 ,  H04N5/376

    摘要： A data conversion/output device includes a number of sensors, voltage-time conversion circuits that are arranged adjacent to respective sensors and change output levels upon the lapse of times corresponding to output voltage values from the sensors after a conversion operation start point in order to convert for voltage outputs of the sensors into times. The device also includes sensed data generation circuits outputting, as digital data, lapse times until the output levels of the voltage-time conversion circuits change after a conversion start point. The sensed data generation circuits include a counter for counting a clock signal. An operation start of the voltage-time conversion circuits and a start of count operation of the counter are staggered.

    摘要翻译： 数据转换/输出装置包括多个传感器，电压 - 时间转换电路，其布置成与各个传感器相邻，并且在转换操作开始点之后根据传感器的输出电压值改变输出电平， 将传感器的电压输出转换为次数。 该装置还包括感测数据产生电路，作为数字数据输出经过时间，直到电压 - 时间转换电路的输出电平在转换开始点之后改变。 感测数据生成电路包括用于计数时钟信号的计数器。 电压 - 时间转换电路的操作开始和计数器的计数操作开始交错。