公开(公告)号：US06404592B1

公开(公告)日：2002-06-11

申请号：US09626948

申请日：2000-07-27

申请人： Hidetoshi Saito ,  Tomoo Otsuka ,  Masahiro Iizuka

发明人： Hidetoshi Saito ,  Tomoo Otsuka ,  Masahiro Iizuka

IPC分类号： G11B560

CPC分类号： G11B21/21 ,  G11B5/4826 ,  G11B5/60 ,  Y10T29/49052

摘要： An improved magnetic head includes a slider and a thin film element, the later of which is provided on a trailing side of the slider. The slider has core layers. The surfaces of the core layers are abraded so that the thickness of an &agr; phase constituting the, surface structures of the core layers may be reduced to a very small value. In this way, even if a carbon film is directly formed on the core layers, it is still possible to ensure a desired diffusion between the carbon film and the &agr; phase, which effectively prevents the carbon film from separation (peeling) and avoiding the formation of any spot on the carbon film.

摘要翻译： 改进的磁头包括滑块和薄膜元件，其后面设置在滑块的后侧。 滑块具有核心层。 芯层的表面被磨损，使得构成芯层的表面结构的α相的厚度可以被减小到非常小的值。 以这种方式，即使在芯层上直接形成碳膜，也可以确保碳膜和α相之间的期望的扩散，有效地防止碳膜分离（剥离）并避免形成 在碳膜上的任何点。

公开(公告)号：US5948554A

公开(公告)日：1999-09-07

申请号：US978459

申请日：1997-11-25

申请人： Hiroshi Yamagami ,  Kazuichi Endo ,  Kazuhiro Kaneko ,  Masahiro Iizuka

发明人： Hiroshi Yamagami ,  Kazuichi Endo ,  Kazuhiro Kaneko ,  Masahiro Iizuka

IPC分类号： G11B5/127 ,  G11B5/187 ,  G11B5/66

CPC分类号： G11B5/1878 ,  G11B5/1276 ,  Y10S428/90 ,  Y10T428/115 ,  Y10T428/1193

摘要： The ZnO amount contained in the ferrite is lowered more than those of conventional ones to increase the mean coefficient of thermal expansion of the ferrite. Thus, a difference between the mean coefficient of thermal expansion of the ferrite and the mean coefficient of thermal expansion of the soft magnetic material is reduced. Further, the Fe.sub.2 O.sub.3 amount contained in the ferrite is suitably controlled to reduce the absolute value of the magnetocrystalline anisotropic energy K1 and the absolute value of the saturation magnetostriction .lambda.S. Thus, the absolute value of the apparent magnetic anisotropic energy is lowered, and the magnetic anisotropy is weakened. The magnetic permeability and the head output can be elevated in a high frequency region by lowering the magnetic anisotropy.

摘要翻译： 铁素体中所含的ZnO含量比常规的ZnO降低，以增加铁素体的平均热膨胀系数。 因此，铁素体的平均热膨胀系数与软磁性材料的平均热膨胀系数之间的差异减小。 此外，适当地控制铁素体中含有的Fe 2 O 3量以降低磁晶各向异性能K1的绝对值和饱和磁致伸缩λS的绝对值。因此，表观磁各向异性能的绝对值降低， 磁各向异性减弱。 通过降低磁各向异性，可以在高频区域提高导磁率和磁头输出。