Invention Grant
- Patent Title: Method of forming a thin film magnetic structure having ferromagnetic and antiferromagnetic layers
- Patent Title (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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Application No.: US696656Application Date: 1996-08-14
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Publication No.: US5612098APublication Date: 1997-03-18
- Inventor: Minshen Tan , Hua-Ching Tong , Francis H. Liu , Swie-In Tan
- Applicant: Minshen Tan , Hua-Ching Tong , Francis H. Liu , Swie-In Tan
- Applicant Address: CA Milpitas
- Assignee: Read-Rite Corporation
- Current Assignee: Read-Rite Corporation
- Current Assignee Address: CA Milpitas
- Main IPC: C23C14/35
- IPC: C23C14/35 ; G01R33/09 ; G11B5/31 ; G11B5/39 ; H01F10/32 ; H01F41/30 ; C23C14/08
Abstract:
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.
Public/Granted literature
- US5168074A Active matrix liquid crystal display fabrication for grayscale Public/Granted day:1992-12-01
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