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    • 2. 发明授权
    • Magneto-resistive effect magnetic head
    • 磁阻效应磁头
    • US6120920A
    • 2000-09-19
    • US196562
    • 1998-11-20
    • Akio TakadaMoriaki AbeTadayuki HondaHiroaki NarisawaTakuji Shibata
    • Akio TakadaMoriaki AbeTadayuki HondaHiroaki NarisawaTakuji Shibata
    • G11B5/39B32B9/00
    • B82Y25/00B82Y10/00G11B5/3903G11B2005/3996Y10S428/90Y10T428/1121
    • A magneto-resistive effect type magnetic head employing a spin valve film in which the direction of magnetization of a free layer is constant even in the absence of an external magnetic field to assure magnetic stability. The magneto-resistive effect type magnetic head includes a magneto-resistive effect film of a planar substantially rectangular configuration, having its longitudinal direction substantially perpendicular to a magnetic recording medium sliding surface, a first electrode connected to a longitudinal end of the magneto-resistive effect film, a second electrode connected to the other longitudinal end of the magneto-resistive effect film and hard magnetic films arranged on both ends along the width of the magneto-resistive effect film. The magneto-resistive effect film is made up of at least a first ferromagnetic layer, a non-magnetic layer, a second ferromagnetic layer and an anti-ferromagnetic layer, layered together. The hard magnetic films has an electrical resistance larger than that of the magneto-resistive effect film.
    • 使用自旋阀膜的磁阻效应型磁头,其中自由层的磁化方向即使在没有外部磁场的情况下也是恒定的,以确保磁稳定性。 磁阻效应型磁头包括平面大致矩形构造的磁阻效应膜,其纵向基本上垂直于磁记录介质滑动表面,第一电极连接到磁阻效应的纵向端 薄膜,连接到磁阻效应膜的另一纵向端的第二电极和沿着磁阻效应膜的宽度布置在两端的硬磁膜。 磁阻效应膜由至少第一铁磁层,非磁性层,第二铁磁层和反铁磁层构成,层叠在一起。 硬磁膜的电阻​​大于磁阻效应膜的电阻。
    • 3. 发明授权
    • Thin-film magnetic head having magnetic resistance effect stabilizing
layer
    • 具有磁阻效应稳定层的薄膜磁头
    • US5828527A
    • 1998-10-27
    • US820343
    • 1997-03-12
    • Akio TakadaTadayuki HondaTakuji ShibataMoriaki Abe
    • Akio TakadaTadayuki HondaTakuji ShibataMoriaki Abe
    • G11B5/39
    • G11B5/3932G11B5/3903G11B5/3935
    • A thin-film magnetic head improves magnetic stability of a magnetoresistance effect film 13 for further stabilizing the playback output. The thin-film magnetic head has a magnetoresistance effect stabilizing layer 11, a non-magnetic layer 12 and a magnetoresistance effect layer 13 exhibiting the magnetoresistance effect. The magnetoresistance effect stabilizing layer 11 has a hard magnetic film and a soft magnetic film. The magnetoresistance effect stabilizing layer 11 has a non-magnetic film 11c of a non-magnetic material in at least a partial area between a hard magnetic film 11b and a soft magnetic film 11d. In the thin-film magnetic head, there is produced a stable magnetostatic coupling action between the magnetoresistance effect stabilizing layer 11 and the magnetoresistance effect layer 13 for increasing the magnetic stability of the magnetoresistance effect layer 13 operating as a magnetically sensitive portion.
    • 薄膜磁头提高了磁阻效应膜13的磁稳定性,以进一步稳定重放输出。 薄膜磁头具有表现出磁阻效应的磁阻效应稳定层11,非磁性层12和磁阻效应层13。 磁阻效应稳定层11具有硬磁性膜和软磁性膜。 磁阻效应稳定层11在硬磁膜11b和软磁膜11d之间的至少局部区域中具有非磁性材料的非磁性膜11c。 在薄膜磁头中,在磁阻效应稳定层11和磁阻效应层13之间产生稳定的静磁耦合作用,用于增加作为磁敏部分工作的磁阻效应层13的磁稳定性。
    • 6. 发明授权
    • Thin-film magnetic head
    • 薄膜磁头
    • US5708542A
    • 1998-01-13
    • US685611
    • 1996-07-24
    • Akio TakadaTakuji ShibataTadayuki Honda
    • Akio TakadaTakuji ShibataTadayuki Honda
    • G11B5/31G11B5/39
    • G11B5/3903G11B5/3932G11B5/3941G11B5/3113
    • A magnetoresistance effect thin-film magnetic head superior in magnetic stability and capable of developing a high playback power. The thin-film magnetic head has a magnetoresistance effect stabilizing layer 11 inclusive a diamagnetic film or a hard magnetic film, a non-magnetic insulating layer 12 and a magnetoresistance effect layer 13 inclusive of a magnetoresistance effect film, layered together to form a magnetoresistance effect element 3. The thin-film magnetic head also has a non-magnetic insulating layer 4 arranged on a lateral surface of the magnetoresistance effect element 3 and a pair of electrodes connected to the magnetoresistance effect layer 13 on both ends of the upper surface of the magneto-resistance effect element 3. The playback signals are detected by the magnetoresistance effect of the magnetoresistance effect layer 13.
    • 具有优异的磁稳定性和能够发展高回放功率的磁阻效应薄膜磁头。 薄膜磁头具有磁阻效应稳定层11,包括抗磁性膜或硬磁性膜,非磁性绝缘层12和包含磁阻效应膜的磁阻效应层13,层叠在一起以形成磁阻效应 薄膜磁头还具有布置在磁阻效应元件3的侧表面上的非磁性绝缘层4和连接到磁阻效应层13的上表面两端的磁阻效应层13的一对电极 磁阻效应元件3.再现信号由磁阻效应层13的磁阻效应检测。