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    Soft magnetic thin film, and magnetic head and magnetic recording device using the same
    5.
    发明授权
    Soft magnetic thin film, and magnetic head and magnetic recording device using the same 失效
    软磁薄膜，磁头及磁记录装置使用

    公开(公告)号：US5858548A

    公开(公告)日：1999-01-12

    申请号：US509584

    申请日：1995-07-31

    申请人： Fumiyoshi Kirino ,  Shigeharu Otomo ,  Nagatugu Koiso ,  Noriyuki Kumasaka ,  Takeshi Miura

    发明人： Fumiyoshi Kirino ,  Shigeharu Otomo ,  Nagatugu Koiso ,  Noriyuki Kumasaka ,  Takeshi Miura

    IPC分类号： G11B5/127 ,  G11B5/31 ,  H01F10/14

    CPC分类号： G11B5/127 ,  G11B5/31 ,  H01F10/14 ,  Y10S428/90 ,  Y10T428/115 ,  Y10T428/31678

    摘要： Corrosion resistance of a magnetic film composed mainly of Fe is maintained while keeping its magnetic properties. A magnetic head having a magnetic core is formed in part of the magnetic thin film, which contains not only an alloy of Fe-metalloid series but also (Al, Ru) or (Al, Rh) and which is thermally treated at a constant temperature to develop the soft magnetic properties. The deterioration of the saturation magnetization and the soft magnetic properties is suppressed by adding (Al, Ru) or (Al, Rh) together. The magnetic film has a high saturation magnetization and excellent soft magnetic properties and is excellent in corrosion resistance and hardness.

    摘要翻译： 主要由Fe组成的磁性膜的耐腐蚀性得到保持，同时保持其磁特性。 具有磁芯的磁头形成在磁性薄膜的一部分中，其不仅包含Fe-类金属系合金，而且包含（Al，Ru）或（Al，Rh），并且在恒温下进行热处理 开发软磁性能。 通过将（Al，Ru）或（Al，Rh）加入到一起来抑制饱和磁化强度和软磁性能的劣化。 磁性膜具有高的饱和磁化强度和优异的软磁性能，并且具有优异的耐腐蚀性和硬度。

    Soft magnetic thin film, and magnetic head and magnetic recording device using the same
    7.
    发明授权
    Soft magnetic thin film, and magnetic head and magnetic recording device using the same 失效
    软磁薄膜，磁头及磁记录装置使用

    公开(公告)号：US6033792A

    公开(公告)日：2000-03-07

    申请号：US174445

    申请日：1998-10-19

    申请人： Fumiyoshi Kirino ,  Shigekazu Otomo ,  Nagatugu Koiso ,  Noriyuki Kumasaka ,  Takeshi Miura

    发明人： Fumiyoshi Kirino ,  Shigekazu Otomo ,  Nagatugu Koiso ,  Noriyuki Kumasaka ,  Takeshi Miura

    IPC分类号： G11B5/147

    CPC分类号： G11B5/147 ,  Y10T428/115 ,  Y10T428/31678

    摘要： A recording head for recording data onto a recording medium is provided with a thin film formed of the following compound Fe.sub.100-a-b-c X.sub.a Y.sub.b Z.sub.c, wherein X is at least one element selected from the group consisting of Nb, Ta, Hf and Zr, Y is one or two elements selected from the group consisting of Cr, Ru, Al, Si, Ti and Rh, and Z is at least one element selected from the group consisting of C and N, and wherein 5.ltoreq.a.ltoreq.20, 0.5.ltoreq.b.ltoreq.15, 1.ltoreq.c.ltoreq.20, and 0.5.ltoreq.a/c.ltoreq.0.7, the carbide or the nitride of the element X having an average grain size of not larger than 3 nm. This way, increased corrosion resistance is provided without substantially reducing magnetic characteristics such as saturation and coercive force. A recording apparatus, such as a VTR, including such a recording head is disclosed as well as a recording medium formed using this thin film.

    摘要翻译： 在记录介质上记录数据的记录头设有由以下化合物Fe100-ab-cXaYbZc形成的薄膜，其中X是选自Nb，Ta，Hf和Zr中的至少一种元素，Y是 选自Cr，Ru，Al，Si，Ti和Rh中的一种或两种元素，Z是选自C和N中的至少一种元素，其中5≤A≤20 ，0.5≤b≤15，1≤c≤20,0.5≤a/c≤0.7，元素X的碳化物或氮化物的平均粒径不是 大于3nm。 这样，提供了增加的耐腐蚀性，而基本上不降低诸如饱和度和矫顽力之类的磁特性。 公开了包括这种记录头的诸如VTR的记录装置以及使用该薄膜形成的记录介质。

    Soft magnetic thin film, and magnetic head and magnetic recording apparatus using the film
    8.
    发明授权
    Soft magnetic thin film, and magnetic head and magnetic recording apparatus using the film 失效
    软磁薄膜，磁头和磁记录装置

    公开(公告)号：US5962153A

    公开(公告)日：1999-10-05

    申请号：US831537

    申请日：1997-04-08

    申请人： Fumiyoshi Kirino ,  Nagatugu Koiso

    发明人： Fumiyoshi Kirino ,  Nagatugu Koiso

    IPC分类号： G11B5/187 ,  G11B5/31 ,  H01F10/13 ,  G11B5/66

    CPC分类号： G11B5/3109 ,  G11B5/1878 ,  H01F10/131 ,  Y10S428/90 ,  Y10T428/115

    摘要： To obtain a soft magnetic thin film having improved soft magnetic characteristics, thermal stability and corrosion resistance, this invention uses a soft magnetic thin film comprising Fe as the principal component thereof and containing Ta and/or Hf and C and/or N, wherein the (110) plane of Fe is preferentially oriented, the size d.sub.1 of the Fe crystal particle is not greater than 15 nm and the size d.sub.2 of the Ta--C, Ta--N, Hf--C or Hf--N particle is not greater than 3 nm. The crystal particle size is controlled by causing first the Fe crystal particle to precipitate at the initial stage of the film formation and then causing the crystal particle of Ta--C, Ta--N, Hf--C or Hf--N to precipitate.

    摘要翻译： 为了获得具有改善的软磁特性，热稳定性和耐腐蚀性的软磁性薄膜，本发明使用包含Fe作为其主要成分并含有Ta和/或Hf和C和/或N的软磁薄膜，其中 Fe的（110）面优先取向，Fe结晶粒子的尺寸d1不大于15nm，Ta-C，Ta-N，Hf-C或Hf-N粒子的尺寸d2不大于 3nm。 通过首先在成膜的初始阶段首先使Fe晶体析出，然后使Ta-C，Ta-N，Hf-C或Hf-N的结晶粒子沉淀，来控制晶体粒径。