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公开(公告)号：US4803581A
公开(公告)日：1989-02-07
申请号：US27088
申请日：1987-03-16
CPC分类号： G11B5/3925
摘要： A thin film magnetic head including a lower yoke made of magnetic material having a high permeability, a magnetoresistive element and an upper yoke for transmitting magnetic flux to the magnetoresistive element. The upper yoke overlaps, at its rear end portion, a front end portion of the magnetoresistive element, while the lower yoke is formed, at its portion confronting the magnetoresistive element, with a groove such that the magnetoresistive element overlaps, at its rear end portion, the lower yoke.
摘要翻译： 一种薄膜磁头，包括由具有高磁导率的磁性材料制成的下磁轭，磁阻元件和用于将磁通传递到磁阻元件的上磁轭。 上磁轭在其后端部分与磁阻元件的前端部分重叠，而在其磁阻元件面对的部分形成下磁轭，使得磁阻元件在其后端部分重叠， ，下轭。
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公开(公告)号：US4699702A
公开(公告)日：1987-10-13
申请号：US906459
申请日：1986-09-12
申请人： Ryoji Minakata , Toru Kira , Mitsuhiko Yoshikawa
发明人： Ryoji Minakata , Toru Kira , Mitsuhiko Yoshikawa
CPC分类号： C23C14/355 , H01F41/18
摘要： A process for preparing a soft magnetic film of Permalloy on a rugged substrate in an inert gas atmosphere by a multielectrode sputtering method wherein the target voltage and the target current are independently controllable, the Permalloy film being prepared by:(a) setting the inert gas pressure and the target voltage at values below the critical values where the coercive force of the Permalloy film abruptly increases when the film is formed on a flat substrate, and(b) applying to the rugged substrate during film formation a negative bias voltage not lower than a specific value determined by an angle of inclination formed by a stepped portion in the rugged substrate.
摘要翻译： 一种通过多电极溅射法在惰性气体环境中制备坡莫合金软磁膜的方法，其中目标电压和目标电流是独立可控的，该坡莫合金膜通过以下步骤制备：（a）将惰性气体 压力和目标电压值低于在平坦基板上形成薄膜时，坡莫合金薄膜的矫顽力突然增加的临界值，（b）在成膜期间向坚固的基板施加不低于 由凹凸基板中的阶梯部分形成的倾斜角确定的具体值。
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公开(公告)号：US4816946A
公开(公告)日：1989-03-28
申请号：US110102
申请日：1987-10-15
CPC分类号： G11B5/3163
摘要： An improved method of manufacturing a thin film magnetic head, which includes the steps of forming an electrically conductive material coil layer on a substrate of a magnetic material, applying onto the electrically conductive material coil layer, an insulation layer of SiO.sub.2, Si.sub.3 N.sub.4, Al.sub.2 O.sub.3 and the like by sputtering, plasma chemical vapor deposition process, etc., and further forming a coating layer of SiO.sub.2 on the insulation layer by spin-coating process for flattening the upper surface of the insulation layer.
摘要翻译： 一种制造薄膜磁头的改进方法，其包括以下步骤：在磁性材料的基底上形成导电材料线圈层，将其施加到导电材料线圈层上，将SiO 2，Si 3 N 4，Al 2 O 3的绝缘层和 通过溅射等离子体化学气相沉积工艺等，并且通过旋涂法在绝缘层上进一步形成SiO 2涂层，以使绝缘层的上表面变平。
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4.发明授权Thin film magnetic head having a magnetized ferromagnetic film on the MR element 失效在MR元件上具有磁化铁磁膜的薄膜磁头
公开(公告)号：US4639806A
公开(公告)日：1987-01-27
申请号：US577389
申请日：1984-02-06
申请人： Toru Kira , Teiichi Miyauchi , Mitsuhiko Yoshikawa
发明人： Toru Kira , Teiichi Miyauchi , Mitsuhiko Yoshikawa
CPC分类号： G11B5/3903 , Y10S430/165
摘要： A thin film magnetic head for detecting, as a change in electric resistance, a change in signal magnetic field to be applied along the magnetization-hard-axis direction of a metal ferromagnetic thin film (MR element) having unit-axis anisotropy, which comprises a ferromagnetic film, which is sufficiently larger in coercive force than the metal ferromagnetic thin film, the ferromagnetic film being disposed on a superposed portion between a lead conductor portion and the metal ferromagnetic thin film (MR element), the metal ferromagnetic thin film (MR element) being coupled in ferromagnetic exchange (MR element) to the ferromagnetic film which is larger in coercive force. The ferromagnetic film is magnetized in a direction longitudinally of the MR element.
摘要翻译： 一种用于检测沿着具有单位轴各向异性的金属铁磁薄膜（MR元件）的磁化 - 硬轴方向施加的信号磁场的变化作为电阻的变化的薄膜磁头，其包括 强磁性膜的矫顽力比金属铁磁薄膜足够大，铁磁膜设置在引导导体部分和金属铁磁薄膜（MR元件）之间的叠置部分上，金属铁磁性薄膜（MR 元件）以铁磁交换（MR元件）耦合到矫顽力较大的铁磁膜。 铁磁膜沿着MR元件的纵向被磁化。
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