公开(公告)号：US07009819B2

公开(公告)日：2006-03-07

申请号：US10267275

申请日：2002-10-09

申请人： Yutaka Soda ,  Yoshimi Takahashi ,  Susumu Sato ,  Seiji Onoe

发明人： Yutaka Soda ,  Yoshimi Takahashi ,  Susumu Sato ,  Seiji Onoe

IPC分类号： G11B5/39

CPC分类号： G11B5/10 ,  G11B5/3903 ,  G11B5/40 ,  G11B5/53

摘要： A head substrate and a protective substrate are formed of an electrostatic-discharge resistant conductive material having an electrical resistivity of 102 to 1010 Ωcm. These substrates are electrically connected to a base metal through the use of conductive paste and are set to a ground potential via the base metal and a rotating drum. This suppresses a discharge current flowing through an MR element when an electrostatically charged substance touches or approaches a magnetic reproducing head, a terminal, a conducting wire, etc. to generate an electrostatic discharge. The magnetic reproducing head including an MR element and the like is prevented against an electrostatic discharge damage. It is possible to provide the magnetic reproducing head, a head drum apparatus, and a magnetic recording-reproducing apparatus which can highly effectively prevent an electrostatic discharge damage.

摘要翻译： 头基板和保护基板由电阻率为10〜10Ω·cm的静电电阻导电材料形成。 这些基板通过使用导电膏电连接到基体金属，并且通过基底金属和旋转鼓被设置为接地电位。 当静电充电物质接触或接近磁性再现头，端子，导线等产生静电放电时，这抑制流过MR元件的放电电流。 包括MR元件等的磁性再现头被防止静电放电损坏。 可以提供可以高度有效地防止静电放电损坏的磁性再现头，磁头鼓装置和磁记录重放装置。

公开(公告)号：US06985336B2

公开(公告)日：2006-01-10

申请号：US11117207

申请日：2005-04-28

申请人： Yutaka Soda ,  Yoshimi Takahashi ,  Susumu Sato ,  Seiji Onoe

发明人： Yutaka Soda ,  Yoshimi Takahashi ,  Susumu Sato ,  Seiji Onoe

IPC分类号： G11B5/39

CPC分类号： G11B5/10 ,  G11B5/3903 ,  G11B5/40 ,  G11B5/53

摘要： A head substrate and a protective substrate are formed of an electrostatic-discharge resistant conductive material having an electrical resistivity of 102 to 1010 Ωcm. These substrates are electrically connected to a base metal through the use of conductive paste and are set to a ground potential via the base metal and a rotating drum. This suppresses a discharge current flowing through an MR element when an electrostatically charged substance touches or approaches a magnetic reproducing head, a terminal, a conducting wire, etc. to generate an electrostatic discharge. The magnetic reproducing head including an MR element and the like is prevented against an electrostatic discharge damage. It is possible to provide the magnetic reproducing head, a head drum apparatus, and a magnetic recording-reproducing apparatus which can highly effectively prevent an electrostatic discharge damage.

摘要翻译： 头基板和保护基板由电阻率为10〜10Ω·cm的静电电阻导电材料形成。 这些基板通过使用导电膏电连接到基体金属，并且通过基底金属和旋转鼓被设置为接地电位。 当静电充电物质接触或接近磁性再现头，端子，导线等产生静电放电时，这抑制流过MR元件的放电电流。 包括MR元件等的磁性再现头被防止静电放电损坏。 可以提供可以高度有效地防止静电放电损坏的磁性再现头，磁头鼓装置和磁记录重放装置。

公开(公告)号：US20050190506A1

公开(公告)日：2005-09-01

申请号：US11117207

申请日：2005-04-28

申请人： Yutaka Souda ,  Yoshimi Takahashi ,  Susumu Sato ,  Seiji Onoe

发明人： Yutaka Souda ,  Yoshimi Takahashi ,  Susumu Sato ,  Seiji Onoe

IPC分类号： G11B5/39 ,  G11B5/10 ,  G11B5/40 ,  G11B5/53 ,  G11B5/52

CPC分类号： G11B5/10 ,  G11B5/3903 ,  G11B5/40 ,  G11B5/53

摘要： A head substrate and a protective substrate are formed of an electrostatic-discharge resistant conductive material having an electrical resistivity of 102 to 1010 Ωcm. These substrates are electrically connected to a base metal through the use of conductive paste and are set to a ground potential via the base metal and a rotating drum. This suppresses a discharge current flowing through an MR element when an electrostatically charged substance touches or approaches a magnetic reproducing head, a terminal, a conducting wire, etc. to generate an electrostatic discharge. The magnetic reproducing head including an MR element and the like is prevented against an electrostatic discharge damage. It is possible to provide the magnetic reproducing head, a head drum apparatus, and a magnetic recording-reproducing apparatus which can highly effectively prevent an electrostatic discharge damage.

摘要翻译： 头基板和保护基板由电阻率为10〜10Ω·cm的静电电阻导电材料形成。 这些基板通过使用导电膏电连接到基体金属，并且通过基底金属和旋转鼓被设置为接地电位。 当静电充电物质接触或接近磁性再现头，端子，导线等产生静电放电时，这抑制流过MR元件的放电电流。 包括MR元件等的磁性再现头被防止静电放电损坏。 可以提供可以高度有效地防止静电放电损坏的磁性再现头，磁头鼓装置和磁记录重放装置。

公开(公告)号：US06909584B2

公开(公告)日：2005-06-21

申请号：US09897236

申请日：2001-07-02

申请人： Eiji Nakashio ,  Seiji Onoe ,  Junichi Sugawara

发明人： Eiji Nakashio ,  Seiji Onoe ,  Junichi Sugawara

IPC分类号： G01R33/09 ,  G11B5/39 ,  G11B5/40 ,  H01L43/08

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/40 ,  G11B2005/3996

摘要： In a magnetic tunnel effect type magnetic head (20) having a magnetic tunnel junction element (26) sandwiched with conductive gap layers (25) and (27) between a pair of magnetic shielding layers (24) and (28), the conductive gap layers (25) and (27) are formed from at least one nonmagnetic metal layer containing a metal element selected from Ta, Ti, Cr, W, Mo, V, Nb and Zr. Therefore, the magnetic head (20) can have an improved face opposite to a magnetic recording medium.

摘要翻译： 在具有夹在一对磁屏蔽层（24）和（28）之间的导电间隙层（25）和（27）的磁性隧道结元件（26）的磁隧道效应型磁头（20）中，导电间隙 层（25）和（27）由至少一个含有选自Ta，Ti，Cr，W，Mo，V，Nb和Zr的金属元素的非磁性金属层形成。 因此，磁头（20）可以具有与磁记录介质相对的改进面。

公开(公告)号：US06172857B2

公开(公告)日：2001-01-09

申请号：US09225913

申请日：1999-01-05

申请人： Teruo Inaguma ,  Seiji Onoe ,  Hiroshi Kano ,  Yoshito Ikeda ,  Seiichi Onodera

发明人： Teruo Inaguma ,  Seiji Onoe ,  Hiroshi Kano ,  Yoshito Ikeda ,  Seiichi Onodera

IPC分类号： G11B552

CPC分类号： G11B5/53 ,  G11B5/0086 ,  G11B5/23 ,  G11B5/4893

摘要： A magnetoresistive head includes a magnetoresistive element sandwiched between a pair of soft magnetic material-made shields to detect signal from a magnetic tape under a magnetoresistance effect, the magnetoresistive element having a magnetic sensor disposed obliquely, at a predetermined azimuth angle, to a direction perpendicular in which the magnetic tape is fed or moved; the magnetoresistive head being installed on a rotating drum to read signal on the magnetic tape by the helical scanning method. A recording/reproducing apparatus includes a rotating drum having installed thereon the magnetoresistive head as reading head and an inductive magnetic head as writing head, to write and/or read signal from the magnetic tape by the helical scanning method.

摘要翻译： 磁阻头包括夹在一对软磁材料制成的屏蔽之间以在磁阻效应下检测来自磁带的信号的磁阻元件，磁阻元件具有以预定的方位角倾斜地垂直于垂直方向 其中磁带被馈送或移动; 磁阻头安装在旋转鼓上，通过螺旋扫描方法读取磁带上的信号。一种记录/再现装置，包括：旋转鼓，其上安装有作为读取头的磁阻头和作为书写头的感应磁头， 通过螺旋扫描方法从磁带写入和/或读取信号。

公开(公告)号：US07092225B2

公开(公告)日：2006-08-15

申请号：US11091084

申请日：2005-03-28

申请人： Eiji Nakashio ,  Seiji Onoe ,  Junichi Sugawara ,  Toru Katakura

发明人： Eiji Nakashio ,  Seiji Onoe ,  Junichi Sugawara ,  Toru Katakura

IPC分类号： G11B5/127 ,  G11B5/33

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3909 ,  G11B2005/3996 ,  Y10T29/49041 ,  Y10T29/49043

摘要： A magnetic tunnel effect type magnetic head comprising a first soft magnetic conductive layer which is to provide a lower shielding layer 24, a metal oxide layer 25 and a first nonmagnetic conductive layer, formed on the first soft magnetic conductive layer, to provide a lower gap layer 26, a magnetic tunnel junction layer 34 formed on the first nonmagnetic conductive layer to provide a magnetic tunnel junction element 27, a second nonmagnetic conductive layer formed on the magnetic tunnel junction layer 34 to provide an upper gap layer 28; and a second soft magnetic conductive layer formed on the second nonmagnetic conductive layer to provide an upper shielding layer 29, the metal oxide layer 25 in the lower gap layer 26 being formed beneath at least the magnetic tunnel junction layer 27.

公开(公告)号：US20050237675A1

公开(公告)日：2005-10-27

申请号：US11158117

申请日：2005-06-20

申请人： Eiji Nakashio ,  Seiji Onoe ,  Junichi Sugawara

发明人： Eiji Nakashio ,  Seiji Onoe ,  Junichi Sugawara

IPC分类号： G01R33/09 ,  G11B5/39 ,  G11B5/40 ,  H01L43/08 ,  G11B5/33 ,  G11B5/127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/40 ,  G11B2005/3996

摘要： In a magnetic tunnel effect type magnetic head 20 having a magnetic tunnel junction element 26 sandwiched with conductive gap layers 25 and 27 between a pair of magnetic shielding layers 24 and 28, the conductive gap layers 25 and 27 are formed from at least one nonmagnetic metal layer containing a metal element selected from Ta, Ti, Cr, W, Mo, V, Nb and Zr. Therefore, the magnetic head 20 can have an improved face opposite to a magnetic recording medium.

摘要翻译： 在具有被导电间隙层25和27夹在一对磁屏蔽层24和28之间的磁性隧道结元件26的磁隧道效应型磁头20中，导电间隙层25和27由至少一个非磁性金属 含有选自Ta，Ti，Cr，W，Mo，V，Nb和Zr的金属元素的层。 因此，磁头20可以具有与磁记录介质相对的改进的面。

公开(公告)号：US06760201B2

公开(公告)日：2004-07-06

申请号：US10059906

申请日：2002-01-29

申请人： Eiji Nakashio ,  Seiji Onoe ,  Junichi Sugawara

发明人： Eiji Nakashio ,  Seiji Onoe ,  Junichi Sugawara

IPC分类号： G11B5127

CPC分类号： H01L43/08 ,  B82Y10/00 ,  B82Y25/00 ,  B82Y40/00 ,  G01R33/093 ,  G01R33/098 ,  G11B5/3903 ,  G11B5/3909 ,  H01F10/3254 ,  H01F41/302 ,  H01L27/224 ,  H01L27/228

摘要： A magnetic tunnel element (1) including a plurality of ferromagnetic films (5, 9) laminated across an insulating film (11) formed of metal oxide films (6, 7, 8) and in which asymmetric tunnel barriers are formed along the direction in which the ferromagnetic films (5, 9) are laminated by this insulating film (11) (6, 7, 8). There are also constructed a thin-film magnetic head, a magnetic memory and a magnetic sensor, each of which includes the magnetic tunnel element (1). Since a magnetoresistive ratio can be suppressed from being lowered by decreasing a bias voltage dependency, there are provided a highly-reliable magnetic tunnel element which can obtain a high output when the magnetic tunnel element is applied to a thin-film magnetic head and the like and a method of manufacturing such a magnetic tunnel element. When a magnetic head, a magnetic memory and a magnetic sensor include this magnetic tunnel element, they become highly reliable and also become able to obtain a high output.

摘要翻译： 一种磁隧道元件（1），包括层叠在由金属氧化物膜（6,7,8）形成的绝缘膜（11）上的多个铁磁膜（5,9），并且沿着所述方向形成非对称的隧道屏障 通过该绝缘膜（11）（6,7,8）层叠铁磁膜（5,9）。 还构造了薄膜磁头，磁存储器和磁传感器，每个磁头包括磁通元件（1）。 由于可以通过降低偏置电压依赖性来抑制磁阻比降低，所以提供了一种高可靠性的磁隧道元件，当将磁隧道元件施加到薄膜磁头等时可以获得高输出 以及制造这种磁性隧道元件的方法。 当磁头，磁存储器和磁传感器包括该磁通元件时，它们变得高度可靠，并且也能够获得高输出。

公开(公告)号：US07092224B2

公开(公告)日：2006-08-15

申请号：US11091040

申请日：2005-03-28

申请人： Eiji Nakashio ,  Seiji Onoe ,  Junichi Sugawara ,  Toru Katakura

发明人： Eiji Nakashio ,  Seiji Onoe ,  Junichi Sugawara ,  Toru Katakura

IPC分类号： G11B5/127 ,  G11B5/33

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3909 ,  G11B2005/3996 ,  Y10T29/49041 ,  Y10T29/49043

摘要： A magnetic tunnel effect type magnetic head comprising a first soft magnetic conductive layer which is to provide a lower shielding layer 24, a metal oxide layer 25 and a first nonmagnetic conductive layer, formed on the first soft magnetic conductive layer, to provide a lower gap layer 26, a magnetic tunnel junction layer 34 formed on the first nonmagnetic conductive layer to provide a magnetic tunnel junction element 27, a second nonmagnetic conductive layer formed on the magnetic tunnel junction layer 34 to provide an upper gap layer 28; and a second soft magnetic conductive layer formed on the second nonmagnetic conductive layer to provide an upper shielding layer 29, the metal oxide layer 25 in the lower gap layer 26 being formed beneath at least the magnetic tunnel junction layer 27.

摘要翻译： 一种磁隧道效应型磁头，包括形成在第一软磁性导电层上的第一软磁性导电层，该第一软磁性导电层提供下部屏蔽层24，金属氧化物层25和第一非磁性导电层，以提供较低的间隙 层26，形成在第一非磁性导电层上以提供磁性隧道结元件27的磁性隧道结层34，形成在磁性隧道结层34上以提供上间隙层28的第二非磁性导电层; 以及形成在第二非磁性导电层上以提供上屏蔽层29的第二软磁导电层，下间隙层26中的金属氧化物层25形成在至少磁性隧道结层27下面。

公开(公告)号：US20050168884A1

公开(公告)日：2005-08-04

申请号：US11091084

申请日：2005-03-28

申请人： Eiji Nakashio ,  Seiji Onoe ,  Junichi Sugawara ,  Toru Katakura

发明人： Eiji Nakashio ,  Seiji Onoe ,  Junichi Sugawara ,  Toru Katakura

IPC分类号： G01R33/09 ,  G11B5/39 ,  H01L43/08 ,  H01L43/12 ,  G11B5/33 ,  G11B5/127

CPC分类号： B82Y25/00 ,  B82Y10/00 ,  G11B5/3903 ,  G11B5/3909 ,  G11B2005/3996 ,  Y10T29/49041 ,  Y10T29/49043

摘要： A magnetic tunnel effect type magnetic head comprising a first soft magnetic conductive layer which is to provide a lower shielding layer 24, a metal oxide layer 25 and a first nonmagnetic conductive layer, formed on the first soft magnetic conductive layer, to provide a lower gap layer 26, a magnetic tunnel junction layer 34 formed on the first nonmagnetic conductive layer to provide a magnetic tunnel junction element 27, a second nonmagnetic conductive layer formed on the:magnetic tunnel junction layer 34 to provide an upper gap layer 28; and a second soft magnetic conductive layer formed on the second nonmagnetic conductive layer to provide an upper shielding layer 29, the metal oxide layer 25 in the lower gap layer 26 being formed beneath at least the magnetic tunnel junction layer 27.

摘要翻译： 一种磁隧道效应型磁头，包括形成在第一软磁性导电层上的第一软磁性导电层，该第一软磁性导电层提供下部屏蔽层24，金属氧化物层25和第一非磁性导电层，以提供较低的间隙 层26，形成在第一非磁性导电层上以提供磁性隧道结元件27的磁性隧道结层34，形成在磁性隧道结层34上以提供上间隙层28的第二非磁性导电层; 以及形成在第二非磁性导电层上以提供上屏蔽层29的第二软磁导电层，下间隙层26中的金属氧化物层25形成在至少磁性隧道结层27下面。