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公开(公告)号：US06486662B1
公开(公告)日：2002-11-26
申请号：US09179166
申请日：1998-10-26
IPC分类号： G11B539
CPC分类号： B82Y25/00 , G01R33/093 , G01R33/098 , G11B5/332 , G11B5/3903 , G11B5/3919 , G11B5/3922
摘要： A magnetic field sensor comprises a transducer element, which: transducer element is a Spin Tunnel Junction, comprising a first and second magnetic layer which are sandwiched about an interposed electrical insulator layer; the sensor comprises a yoke having two arms; and the first magnetic layer is in direct contact with a first portion of a first arm of the yoke.
摘要翻译： 磁场传感器包括换能器元件，换能器元件是旋转隧道结，包括被夹在电介质绝缘层之间的第一和第二磁性层; 传感器包括具有两个臂的轭; 并且第一磁性层与磁轭的第一臂的第一部分直接接触。
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公开(公告)号：US5984745A
公开(公告)日：1999-11-16
申请号：US103458
申请日：1998-06-24
CPC分类号： H01J29/703 , H01F13/003
摘要： An element of an apparatus is magnetized so as to generate a magnetic field pattern around the element. To achieve this, use is made of a magnetizing coil, and the element and the magnetizing coil are moved relative to each other, the magnetizing coil carrying an alternating current of substantially constant amplitude as well as a signal current. Preferably, there is a phase difference between the signal current and an intended magnetic field pattern.
摘要翻译： 对装置的元件进行磁化，以便在元件周围产生磁场图案。 为了实现这一点，使用磁化线圈，并且元件和磁化线圈相对于彼此移动，磁化线圈承载基本上恒定幅度的交流电流以及信号电流。 优选地，在信号电流和期望的磁场图案之间存在相位差。
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公开(公告)号：US5600297A
公开(公告)日：1997-02-04
申请号：US517156
申请日：1995-08-21
申请人： Jacobus J. M. Ruigrok , Martinus A. M. Gijs , Jacques C. S. Kools , Reinder Coehoorn , Wiepke Folkerts
发明人： Jacobus J. M. Ruigrok , Martinus A. M. Gijs , Jacques C. S. Kools , Reinder Coehoorn , Wiepke Folkerts
CPC分类号： B82Y25/00 , G01P3/488 , G01R33/093 , G11B5/3903 , H01F10/3268 , G11B5/3925 , G11B5/465
摘要： A device for detecting a magnetic field, which device comprises a magneto-resistive multilayer structure comprising a first magnetic layer (1) which is separated from a second magnetic layer by an interposed non-magnetic layer, the multilayer structure having a first in-plane reference axis (R.sub.1) coinciding with the direction in which magnetic flux is offered to the multilayer structure during operation, and a second in-plane reference axis (R.sub.2) which is perpendicular to the first reference axis (R.sub.1), whereby the magnetic easy axis (E.sub.1) of the first magnetic layer (1) is canted through an acute in-plane angle .alpha. with respect to the second reference axis (R.sub.2), and the magnetic easy axis (E.sub.2) of the second magnetic layer is canted in the opposite sense through an acute in-plane angle .beta. with respect to the second reference axis (R.sub.2). Such a device lends itself to application in a magnetic head, for sensitive retrieval of magnetically-encoded data from a carrier in the form of a tape, disc or card.
摘要翻译： 一种用于检测磁场的装置，该装置包括磁阻多层结构，该磁阻多层结构包括通过插入的非磁性层与第二磁性层分离的第一磁性层（1），所述多层结构具有第一平面 参考轴（R1）与在操作期间向多层结构提供磁通的方向一致，以及垂直于第一参考轴线（R1）的第二面内参考轴线（R2），由此磁性容易轴 第一磁性层（1）的第一磁性层（E1）通过相对于第二参考轴线（R2）的锐角的平面角α倾斜，并且第二磁性层的易磁化轴（E2）倾斜于相反的 通过相对于第二参考轴线（R2）的锐角平面角β来感测。 这种设备本身适用于磁头，用于以磁带，光盘或卡片形式从载体敏感地检索磁编码数据。
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公开(公告)号：US5531016A
公开(公告)日：1996-07-02
申请号：US216575
申请日：1994-03-22
申请人： Lambertus Postma , Henricus G. R. Maas , Jan Haisma , Jacobus J. M. Ruigrok , Gerardus H. J. Somers
发明人： Lambertus Postma , Henricus G. R. Maas , Jan Haisma , Jacobus J. M. Ruigrok , Gerardus H. J. Somers
CPC分类号： G11B5/3916 , G11B5/3919 , G11B5/3925 , Y10T29/49048
摘要： Method of manufacturing a thin-film magnetic head in which a main layer (5) of a non-magnetic material is formed on a support, which layer is recessed by removing material from a side remote from the support, said recess being subsequently filled up with a soft-magnetic material for forming a flux guide (17a, 17b), whereafter the main layer provided with the filled recess is mechanochemically polished for forming a main surface (19) at which subsequently a layer of a magnetoresistive material is provided for forming a magnetoresistive element (23).
摘要翻译： 一种制造薄膜磁头的方法，其中在支撑体上形成非磁性材料的主层（5），所述层通过从远离支撑体的一侧移除材料而凹陷，所述凹槽随后被填充 用于形成磁通引导件（17a，17b）的软磁性材料，然后将设置有填充凹部的主层机械化学研磨以形成主表面（19），随后提供用于形成的磁阻材料层 磁阻元件（23）。
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公开(公告)号：US5097243A
公开(公告)日：1992-03-17
申请号：US491393
申请日：1990-03-08
CPC分类号： H01F36/00 , G11B5/3126 , H01F27/24 , H01F27/36 , Y02E40/66 , Y10S336/01 , Y10S505/87
摘要： Thin-film transformer, for example suitable for use in a thin-film magnetic head, comprising a magnetic yoke composed of two magnetically permeable thin layers 3 and 5 and a primary turn constituted by an electrically conducting thin layer 13 and a secondary turn constituted by an electrically conducting thin layer 15. A thin layer 21 of a superconducting material is provided between the layer 3 and the said turns, or the turns are closely fitted together and made of a superconducting material themselves.
摘要翻译： 薄膜变压器，例如适用于薄膜磁头，包括由两个导磁薄层3和5组成的磁轭和由导电薄层13构成的初级匝和由 导电薄层15.超导材料的薄层21设置在层3和所述匝之间，或者匝紧密地配合在一起并且由超导材料本身制成。
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公开(公告)号：US06205007B1
公开(公告)日：2001-03-20
申请号：US08156146
申请日：1993-11-22
申请人： Jacobus J. M. Ruigrok , Pieter J. Van Der Zaag , Wiepke Folkerts , Lambertus Postma , Ronald M. Wolf , Johannes F. M. Cillessen
发明人： Jacobus J. M. Ruigrok , Pieter J. Van Der Zaag , Wiepke Folkerts , Lambertus Postma , Ronald M. Wolf , Johannes F. M. Cillessen
IPC分类号： G11B5127
CPC分类号： G11B5/3919 , G11B5/3922
摘要： Thin-film magnetic head having a head face (103) and comprising a magnetoresistive element (109) oriented transversely to the head face and a flux-guiding element (107) of a magnetically permeable material terminating in the head face. A peripheral area (109a) of the magnetoresistive element extending parallel to the head face is present opposite the flux-guiding element for forming a magnetic connection between the magnetoresistive element and the flux-guiding element. The flux-guiding element and the peripheral area of the magnetoresistive element constitute a common magnetic contact face (111), while the magnetically permeable material of the flux-guiding element is electrically insulating.
摘要翻译： 具有头表面（103）并且包括横向于头部表面定向的磁阻元件（109）的薄膜磁头和终止于头部表面的导磁材料的磁通引导元件（107）。 与磁头表面平行延伸的磁阻元件的周边区域（109a）与磁通元件相对地形成，用于在磁阻元件和磁通引导元件之间形成磁连接。 磁导元件和磁阻元件的周边区域构成公共磁性接触面（111），而导磁元件的导磁材料是电绝缘的。
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17.发明授权
公开(公告)号：US5973889A
公开(公告)日：1999-10-26
申请号：US8338
申请日：1998-01-16
CPC分类号： G11B5/00813 , B82Y10/00 , B82Y25/00 , G11B5/3903 , G11B5/3922 , G11B5/3967 , G11B2005/3996 , G11B25/063
摘要： Single-channel magnetic head having a head face (1) which extends in a first direction (I) in which a magnetic record carrier (3) is relatively movable with respect to the magnetic head, and in a second direction (II) transverse to the first direction. The magnetic head has a structure of layers which, viewed in the first direction, are situated one on top of the other and extend substantially in the second direction and a third direction (III) transverse to the first and the second direction. The structure is provided with a magnetoresistive measuring element (5), a first magnetic element (7) and a second magnetic element (9). Both magnetic elements are electrically conducting, while the measuring element is arranged electrically in series between the two magnetic elements for passing a measuring current (i) through the measuring element substantially in the third direction. Each magnetic element has an electric contact face (7a, 9a). To obtain a stable single-channel magnetic head having a narrow, well-defined scanning width, at least one magnetic element extending as far as the head face has an extensiveness which is larger in the second direction than in the third direction. This extensiveness in the second direction is also larger than the effective width (w) of the measuring element. In the third direction, the relevant magnetic element has a larger relative magnetic permeability (.mu..sub.rIII) than in the second direction.
摘要翻译： 单通道磁头具有头表面（1），其在第一方向（I）上延伸，其中磁记录载体（3）相对于磁头相对移动，并且沿第二方向（II）横向于 第一个方向。 磁头具有从第一方向观察的层的结构，其一个位于另一个的顶部并且基本上在第二方向上延伸，并且横向于第一和第二方向延伸的第三方向（III）。 该结构设置有磁阻测量元件（5），第一磁性元件（7）和第二磁性元件（9）。 两个磁性元件是导电的，而测量元件电连接地布置在两个磁性元件之间，用于使测量电流（i）基本上沿第三方向通过测量元件。 每个磁性元件具有电接触面（7a，9a）。 为了获得具有窄的，良好限定的扫描宽度的稳定的单通道磁头，至少一个延伸到头部面的磁性元件具有在第二方向上比在第三方向上更大的伸展性。 第二方向上的这种宽度也大于测量元件的有效宽度（w）。 在第三方向上，相对磁性元件的相对磁导率（μrIII）大于第二方向。
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18.发明授权Magnetic head with wear resistant layer having alignment mark, and magnetic head unit incorporating same 失效具有对准标记的耐磨层的磁头和与其结合的磁头单元
公开(公告)号：US5513057A
公开(公告)日：1996-04-30
申请号：US441712
申请日：1995-05-15
CPC分类号： G11B5/3903 , G11B5/10 , G11B5/255 , G11B5/3106 , G11B5/48
摘要： Magnetic head unit comprising a magnetic head secured in a housing and having a magnetic head structure provided with a head face and at least one transducing gap terminating in the head face. A wear- resistant layer (31 ) having at least one alignment mark (35, 36, 37) occupying a defined position with respect to the transducing gap is provided on the head face.
摘要翻译： 磁头单元包括固定在壳体中并具有设置有头部面的磁头结构的磁头和至少一个终止于头部表面的换能间隙的磁头。 具有至少一个对准标记（35,36,37）的耐磨层（31）在头面上设置有相对于换能间隙的限定位置。
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公开(公告)号：US5210668A
公开(公告)日：1993-05-11
申请号：US688016
申请日：1991-04-19
申请人： Cornelis W. M. P. Sillen , Franciscus W. A. Dirne , Jacobus J. M. Ruigrok , Wolfgang Binder-Krieglstein , Ulrich Traxlmayr
发明人： Cornelis W. M. P. Sillen , Franciscus W. A. Dirne , Jacobus J. M. Ruigrok , Wolfgang Binder-Krieglstein , Ulrich Traxlmayr
CPC分类号： G11B5/232 , G11B5/1878
摘要： Magnetic head comprising a magnetic core having two core limbs (1,3) formed from a ferrite, which core limbs constitute two core faces located opposite each other, at least one of said core faces having a cladding of a soft-magnetic material having a higher saturation magnetisation than the ferrite, and a non-magnetic transducing gap (11) present between the core faces and having at least one layer of a first metallic material (21) and bonded layers (23) of a second metallic material. The cladding comprises a first cladding layer (15) of an alloy based on Ni-Fe on which a second cladding layer (17) of an amorphous alloy based on Co-Ti and/or Zr and/or Hf-Nb and/or Ta is provided, while the first metallic material, chosen from the group of Mo, Ti, Cr and NiCr, is directly provided on the amorphous alloy of the cladding. (FIG. 2).
摘要翻译： 磁头包括具有由铁氧体形成的两个铁芯臂（1,3）的磁芯，所述铁芯臂构成彼此相对的两个芯面，所述芯面中的至少一个具有软磁材料的包层，所述软磁材料具有 存在比铁氧体高的饱和磁化，以及存在于芯面之间并且具有至少一层第一金属材料（21）和第二金属材料的接合层（23）的非磁性换能间隙（11）。 所述包层包括基于Ni-Fe的合金的第一包覆层（15），其上形成基于Co-Ti和/或Zr和/或Hf-Nb和/或Ta的非晶合金的第二包覆层（17） 提供了从Mo，Ti，Cr和NiCr组中选出的第一金属材料直接设置在包层的非晶态合金上。 （图2）。
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20.发明授权Superconducting device for reading information from a magnetic recording medium 失效用于从磁记录介质读取信息的超导装置
公开(公告)号：US4996621A
公开(公告)日：1991-02-26
申请号：US265362
申请日：1988-10-28
IPC分类号： G01R33/035 , G11B5/02 , G11B5/33
CPC分类号： G11B5/33 , G01R33/0358 , Y10S505/845
摘要： Device is provided for reading information from a magnetic recording medium, comprising a SQUID (15), a magnetic yoke formed from two flux guides (3 and 5) and a face (13) for magnetic flux coupling of the SQUID with the magnetic recording medium. The SQUID is provided with connection means (33) for a detection circuit (35).
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