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1. 发明授权

US6101068A MR composite-type thin-film magnetic head having an upper pole with a high saturation magnetic flux density and an intermediate pole with a high resistivity 有权
标题翻译： MR复合型薄膜磁头
公开(公告)号：US6101068A
公开(公告)日：2000-08-08
申请号：US157958
申请日：1998-09-22
申请人： Shigekazu Ohtomo , Shuji Sudo , Yuji Ueda , Kuniaki Yoshimura , Hideji Takahashi
发明人： Shigekazu Ohtomo , Shuji Sudo , Yuji Ueda , Kuniaki Yoshimura , Hideji Takahashi
IPC分类号： G11B5/31 , G11B5/39 , G11B5/21
CPC分类号： G11B5/3967 , G11B5/313 , G11B5/3146 , G11B5/3153 , G11B5/3103
摘要： A thin-film magnetic head includes an MR element serving as a reproducing element and a recording induction coil. The MR element is disposed between a lower magnetic pole and an intermediate magnetic pole. The recording induction coil is disposed between the intermediate magnetic pole and an upper magnetic pole. At least a portion of the upper magnetic pole in the vicinity of a recording gap is formed of a material having a high saturation magnetic flux density of 1.4 T or higher. The intermediate magnetic pole is formed of a material having a high resistivity of 80 .mu..OMEGA..multidot.cm or higher.
摘要翻译：薄膜磁头包括用作再现元件的MR元件和记录感应线圈。 MR元件设置在下磁极和中间磁极之间。记录感应线圈设置在中间磁极和上磁极之间。记录间隙附近的上磁极的至少一部分由具有1.4T以上的高饱和磁通密度的材料形成。中间磁极由具有80μm欧姆/厘米或更高的高电阻率的材料形成。

2. 发明授权

US5126902A Floating type magnetic head 失效
标题翻译：浮动式磁头
公开(公告)号：US5126902A
公开(公告)日：1992-06-30
申请号：US595415
申请日：1990-10-11
申请人： Hideji Takahashi , Ryo Goto , Manabu Toyoda
发明人： Hideji Takahashi , Ryo Goto , Manabu Toyoda
IPC分类号： G11B5/23 , G11B5/187
CPC分类号： G11B5/1878
摘要： A floating type magnetic head using a magnetic core comprising a main magnetic circuit constituted with an oxide magnetic material and a thin metallic magnetic film constituting an auxiliary magnetic circuit formed at least on the side of the magnetic gap portion and having the track width of not greater than 16 .mu.m, wherein the hard axis of magnetization for the metallic magnetic film is directed to the direction of the gap depth.
摘要翻译：一种浮动式磁头，其使用包括由氧化物磁性材料构成的主磁路和构成辅助磁路的薄金属磁性膜的磁芯，所述磁性磁体至少形成在所述磁隙部分的侧面上，并且所述磁道宽度不大超过16μm，其中金属磁性膜的硬磁化轴指向间隙深度的方向。

3. 发明授权

US5162961A Composite magnetic head 失效
标题翻译：复合磁头
公开(公告)号：US5162961A
公开(公告)日：1992-11-10
申请号：US692556
申请日：1991-04-29
申请人： Hideji Takahashi , Ryo Goto
发明人： Hideji Takahashi , Ryo Goto
IPC分类号： G11B5/187 , G11B5/31
CPC分类号： G11B5/31
摘要： A composite magnetic head comprises a pair of magnetic core pieces made of an oxide-type magnetic material and bonded to each other for constituting a main magnetic circuit via a magnetic gap therebetween, and a thin, magnetic metal layer formed on a magnetic gap-opposing surface of at least one of the pair of magnetic core pieces for constituting an auxiliary magnetic circuit. The thin, magnetic metal layer has a columnar crystal structure in which the orientations of columnar crystals are substantially in perpendicular to the magnetic gap-opposing surface, and a ratio of diameter to length of each columnar crystal is substantially 0.5 or less. The reverse taper angles of the columnar crystals are preferably 0.degree.-10.degree. to suppress noises, reverse taper angles of the columnar crystals being 0.degree.-10.degree..
摘要翻译：复合磁头包括由氧化物型磁性材料制成的一对磁芯片，并且通过它们之间的磁隙彼此结合以构成主磁路，以及形成在磁隙相对的薄磁性金属层所述一对磁芯片中的至少一个的表面构成辅助磁路。薄的磁性金属层具有柱状晶体结构，其中柱状晶体的取向基本上垂直于磁隙相对表面，并且每个柱状晶体的直径与长度的比率基本上为0.5以下。柱状晶体的倒锥角优选为0°-10°以抑制噪声，柱状晶体的倒锥度为0°-10°。

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