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1.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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公开(公告)号：US4937227A
公开(公告)日：1990-06-26
申请号：US218010
申请日：1988-07-12
IPC分类号： G11B5/31
CPC分类号： G11B5/3126 , Y10S505/701
摘要： Thin-film magnetic head including an inductive transducing element (15) and a face (3) for magnetic flux coupling of the transducing element with a magnetic recording medium. A first magnetically permeable layer (5) and a second similar layer (7) together constitute a transducing gap (11). To improve the transducing function a layer (21) of a superconducting material is provided between the layers (5) and (7).
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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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4.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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5.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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6.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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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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8.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：US5153798A
公开(公告)日：1992-10-06
申请号：US842794
申请日：1992-02-27
CPC分类号： G11B5/17 , G11B5/127 , Y10S505/826
摘要： Magnetic head including a core (1, 3) of soft magnetic material having a contact face (7) and a winding aperture (5) and a coil (14) wound around the core. A layer (13) of a superconducting material is present in the non-magnetic transducing gap (11) in the core and a layer (15) of a superconducting material is provided on at least a plurality of the outer faces, for example the side faces (17).
摘要翻译： 磁头包括具有接触面（7）和缠绕孔（5）的软磁材料芯（1）和缠绕在芯上的线圈（14）。 超导材料的层（13）存在于芯中的非磁性换能间隙（11）中，超导材料的层（15）设置在至少多个外表面上，例如侧面 面（17）。
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10.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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