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1.发明授权
公开(公告)号：US5270895A
公开(公告)日：1993-12-14
申请号：US761585
申请日：1991-09-18
CPC分类号： G11B5/3925 , G11B5/31 , G11B5/3967 , Y10T29/49039
摘要： Combined read/write thin-film magnetic head comprising a read portion including a magneto-resistive element, a write portion including an inductive element, and a shared flux guide between the read and write portions. Improved separation of the read and write functions is achieved by providing the shared flux guide as a sandwich structure of two soft magnetic layers separated by an insulating layer, except that the soft-magnetic layers are interconnected in a magnetically conducting manner proximate to the head face.
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2.发明授权公开(公告)号：US06233126B1
公开(公告)日：2001-05-15
申请号：US08698193
申请日：1996-08-15
IPC分类号： G11B539
CPC分类号： G11B5/3922
摘要： Thin film magnetic head has magnetoresistive element (23) and flux-guiding elements (117a,117b) of a material having a relatively high magnetic permeability, and an intermediate layer between the magnetoresistive element and the flux-guiding elements, the intermediate layer (21) being electrically insulating, and having a relatively low magnetic permeability of between 1.1 and 25. The low permeability intermediate layer increases the magnetic flux between the magnetoresistive element and the flux-guiding elements, and thereby improves the efficiency of the magnetic head.
摘要翻译： 薄膜磁头具有磁阻元件（23）和具有较高磁导率的材料的磁通导向元件（117a，117b）和磁阻元件与磁通引导元件之间的中间层，中间层（21 ）电绝缘，并且具有介于1.1和25之间的相对低的磁导率。低磁导率中间层增加了磁阻元件和导磁元件之间的磁通量，从而提高了磁头的效率。
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3.发明授权Magnetic head with magnetoresistive sensor, and scanning device provided with the magnetic head 失效具有磁阻传感器的磁头和配有磁头的扫描装置
公开(公告)号：US5914838A
公开(公告)日：1999-06-22
申请号：US792316
申请日：1997-01-31
CPC分类号： G11B5/3916 , G11B5/3925 , G11B5/3932
摘要： Magnetic head having a head face (1) and comprising a multilayer structure with a flux guide (7a, 7b), a magnetoresistive sensor (9) and an intermediate layer (13) present between the flux guide and said sensor. The intermediate layer comprises an anti-ferromagnetic oxide which insulates the sensor from the flux guide and also magnetically biases the sensor.
摘要翻译： 具有磁头表面（1）并且包括具有通量引导件（7a，7b）的多层结构，磁阻传感器（9）和存在于所述磁通引导件和所述传感器之间的中间层（13）的磁头。 中间层包括使传感器与磁通引导件绝缘的反铁磁氧化物，并且还使传感器发生磁偏置。
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公开(公告)号：US4764832A
公开(公告)日：1988-08-16
申请号：US53163
申请日：1987-05-21
CPC分类号： G11B5/1878 , G11B5/1874
摘要： Magnetic transducing head comprising a magnetic core having two core limbs (1, 3) formed from a ferrite, a non-magnetizable gap (11) extending between two core faces (1B, 3B) of the core limbs and an electric coil (7) passing through a winding aperture (5). A cladding consisting of a first layer (13) of an Ni-Fe-based alloy is provided on at least one of the core faces, and a second layer (15) of an Fe-Si-Al-based alloy which is provided on the first layer.
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公开(公告)号：US06747854B1
公开(公告)日：2004-06-08
申请号：US09006014
申请日：1998-01-12
IPC分类号： G11B5127
CPC分类号： B82Y25/00 , B82Y10/00 , G11B5/11 , G11B5/3903 , G11B5/3925 , G11B5/3945 , G11B5/3951 , G11B5/40 , G11B2005/3996
摘要： Multi-channel magnetic head having a high channel density, provided with a head face (1) which extends in a first direction (I) in which a record carrier is relatively movable with respect to said 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 in a third direction (III) transverse to the first and the second direction. Viewed in the second direction, adjacent magnetoresistive sensors (S1, S2, S3) are distinguishable in the structure, each comprising a magnetoresistive measuring element (5), a first magnetic element (7) and a second magnetic element (9). The magnetic elements of adjacent sensors are electrically conducting and have electric connection faces (70a, 9a), while the measuring element in each sensor is electrically arranged in series between the first and the second magnetic element for passing a measuring current (i) through the measuring element substantially in the third direction.
摘要翻译： 具有高通道密度的多通道磁头，其具有在第一方向（I）上延伸的头部面（1），其中记录载体相对于所述磁头相对移动，并且在第二方向（II ）横向于第一方向。 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上，并且基本上沿第二方向延伸，并且在横向于第一和第二方向的第三方向（III）上延伸。 在第二方向上观察，相邻的磁阻传感器（S1，S2，S3）在结构上是可区分的，每个包括磁阻测量元件（5），第一磁性元件（7）和第二磁性元件（9）。 相邻传感器的磁性元件是导电的并且具有电连接面（70a，9a），而每个传感器中的测量元件串联地电排列在第一和第二磁性元件之间，用于使测量电流（i）通过 测量元件基本上在第三方向上。
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6.发明授权Magnetic head having an anti-ferromagnetic oxide layer between a flux guide and a magneto-resistive sensor 失效在磁通导向器和磁阻传感器之间具有反铁磁氧化物层的磁头公开(公告)号：US06266217B1
公开(公告)日：2001-07-24
申请号：US09259955
申请日：1999-03-01
IPC分类号： G11B539
CPC分类号： G11B5/3916 , G11B5/3925 , G11B5/3932
摘要： a magnetic head with a head face includes a multilayer structure with a flux guide, a magnetoresistive sensor, and an intermediate layer present between the flux guide and the sensor. The intermediate layer includes an anti-ferromagnetic oxide which insulates the sensor from the flux guide and also magnetically biases the sensor.
摘要翻译： 具有头部面的磁头包括具有磁通引导件的多层结构，磁阻传感器以及存在于磁通引导件和传感器之间的中间层。 中间层包括使传感器与磁通引导件绝缘的反铁磁氧化物，并且还使传感器发生磁偏置。
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7.发明授权
公开(公告)号：US5241439A
公开(公告)日：1993-08-31
申请号：US725094
申请日：1991-07-02
CPC分类号： G11B5/3967
摘要： Thin-film magnetic head comprising a substrate (2), an inductive element (23) and a magnetoresistive element (7), and substantially parallel extending flux guides of a magnetic conducting material for magnetic cooperation with said elements. The flux guides are mutually arranged in such a way that two pairs of flux guides (3A, 3B; 5A, 5B) mutually separated by an insulation layer (19) of a non-magnetic material are present, a first pair constituting a first magnetic circuit, provided with a write gap (27), for the inductive element and a second pair constituting a second magnetic circuit, provided with a read gap (17), for the magnetoresistive element.
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8.发明授权
公开(公告)号：US4927804A
公开(公告)日：1990-05-22
申请号：US218013
申请日：1988-07-12
CPC分类号： G11B5/3126 , H01F27/24 , H01F27/36 , H01F36/00 , Y02E40/66
摘要： Thin-film transformer suitable for use in a thin-film magnetic head has two magnetically permeable thin layers 3 and 5 primary turn constituted by an electrically conducting which form a magnetic yoke. A layer 13 and a secondary turn constituted by an electrically conducting layer 15 are located in the yoke. A layer 21 of a superconducting material is provided between the layer 3 and the turns, or the turns are closely fitted together and made of a superconducting material themselves.
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9.发明授权
公开(公告)号：US4907115A
公开(公告)日：1990-03-06
申请号：US218009
申请日：1988-07-12
CPC分类号： G11B5/3925 , G11B2005/0037 , G11B5/11 , Y10S505/872
摘要： Thin-film magnetic head including a magnetoresistive element (1) and a face (9) for magnetically coupling the element with a magnetic recording medium. A magnetic yoke constituted by three layers (3, 5, 7) of a magnetically permeable material has a gap (13) which is bridged by the magnetoresistive element. A layer (15) of a superconducting material for improving the efficiency of the magnetic head is provided between the layers (3) and (5) and the element (1) on the one hand and the layer (7) on the other hand. For protection from external disturbing magnetic fields and reduction of stray flux a layer (43A, 43B, respectively) of a superconducting material is provided on the layers (3) and (5) and under the layer (7).
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10.发明授权Magnetic sensor having closely spaced and electrically parallel magnetoresistive layers of different widths 失效磁传感器具有不同宽度的紧密间隔和电平行的磁阻层
公开(公告)号：US4686472A
公开(公告)日：1987-08-11
申请号：US828582
申请日：1986-02-10
CPC分类号： B82Y25/00 , G01R33/093 , G11B5/3925 , G11B5/3954
摘要： A magnetic sensor for sensing magnetic fields including two flat layers of electrically conductive ferromagnetic material (11, 16) each having an in-plane easy axis of magnetization (EA.sub.1, EA.sub.2) and each producing a resistance variation under the influence of a magnetic field Ha which originates from a source at an edge of the layer, which layers are situated a small distance apart parallel with respect to each other. In order to increase the sensor's sensitivity to small magnetic fields, in operation the layers (11, 16) convey currents flowing in the same direction and are connected in parallel to the input terminals of a detection circuit (2, 9).
摘要翻译： 一种磁传感器，用于感测磁场，包括两个平坦的导电铁磁材料层（11,16），每个平面层具有面内容易的磁化轴（EA1，EA2），并且在磁场Ha的影响下产生电阻变化 其来源于层的边缘处的源，哪个层位于相对于彼此平行的小距离处。 为了提高传感器对小磁场的灵敏度，在操作中，层（11,16）传送沿相同方向流动的电流并且并联连接到检测电路（2,9）的输入端。
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