发明授权
- 专利标题: Method of forming a thin film magnetic structure having ferromagnetic and antiferromagnetic layers
- 专利标题(中): 形成具有铁磁性和反铁磁性层的薄膜磁性结构的方法
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申请号: US696656申请日: 1996-08-14
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公开(公告)号: US5612098A公开(公告)日: 1997-03-18
- 发明人: Minshen Tan , Hua-Ching Tong , Francis H. Liu , Swie-In Tan
- 申请人: Minshen Tan , Hua-Ching Tong , Francis H. Liu , Swie-In Tan
- 申请人地址: CA Milpitas
- 专利权人: Read-Rite Corporation
- 当前专利权人: Read-Rite Corporation
- 当前专利权人地址: CA Milpitas
- 主分类号: C23C14/35
- IPC分类号: C23C14/35 ; G01R33/09 ; G11B5/31 ; G11B5/39 ; H01F10/32 ; H01F41/30 ; C23C14/08
摘要:
A method of forming a magnetic structure having layers with different magnetization orientations provided by a common magnetic bias layer includes the steps of depositing an antiferromagnetic layer between first and second ferromagnetic layers. During the deposition of the first and second ferromagnetic layers, magnetization fields of different orientations are employed separately to induce different directions of magnetization in the first and second layers. The different directions of magnetization in the first and second layers are sustained, through the process of exchange coupling, by the interposed antiferromagnetic layer which serves as the bias layer. A magnetic structure thus fabricated, can be used as a read transducer capable of generating differential signals with common mode noise rejection, and can be used as a magnetic pole for a magnetic head with reduced Barkhausen noise.
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