公开(公告)号：US5270893A

公开(公告)日：1993-12-14

申请号：US783166

申请日：1991-10-28

申请人： Mamoru Sasaki ,  Hideo Suyama ,  Takuji Shibata ,  Kenichiro Tsunewaki

发明人： Mamoru Sasaki ,  Hideo Suyama ,  Takuji Shibata ,  Kenichiro Tsunewaki

IPC分类号： G11B5/39 ,  C11B5/39 ,  C11B5/147

CPC分类号： G11B5/3903 ,  G11B5/3967

摘要： A magneto-resistance effect type thin film magnetic head which does not produce significant Barkhausen noises and has stabilized characteristics even where the track width is smaller than, for example, 10 .mu.m. The magnetic head comprises a base member, a lower layer thin film magnetic core and an upper layer thin film magnetic core layered on the base member in such a manner that a magnetic gap is formed between front ends thereof, the gap being open to an opposing face of the magnetic head which is in contact with or opposed to a magnetic record medium, and a magneto-resistance effect magnetic sensing section disposed in the magnetic gap between the lower and upper layer thin film magnetic cores. The front end of the lower layer thin film magnetic core which defines the magnetic gap has a width selected to be smaller than the width of the front end of the upper layer thin film magnetic core which defines the magnetic gap so as to define a track width of the magnetic gap.

摘要翻译： 磁阻效应型薄膜磁头不产生明显的巴克豪森噪声，并且即使在轨道宽度小于例如10μm的情况下也具有稳定的特性。 磁头包括基底部件，下层薄膜磁芯和层叠在基底部件上的上层薄膜磁芯，使得在其前端之间形成磁隙，间隙开放到相对的位置 与磁记录介质接触或相对的磁头的表面，以及设置在下层和上层薄膜磁芯之间的磁隙中的磁阻效应磁感应部分。 限定磁隙的下层薄膜磁芯的前端的宽度被选择为小于限定磁隙的上层薄膜磁芯的前端的宽度，以便限定磁道宽度 的磁隙。