发明授权
US5612098A Method of forming a thin film magnetic structure having ferromagnetic and antiferromagnetic layers 失效
形成具有铁磁性和反铁磁性层的薄膜磁性结构的方法

Method of forming a thin film magnetic structure having ferromagnetic
and antiferromagnetic layers
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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