Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Patent
1997-02-03
1999-03-02
Pianalto, Bernard
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
20419211, 2041922, 427129, 427130, 427131, 427132, 427529, 427530, 427531, 427598, 428469, 428693, B05D 512
Patent
active
058768483
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.
REFERENCES:
patent: 5612098 (1997-03-01), Tan et al.
Liu Francis H.
Tan Minshen
Tan Swie-In
Tong Hua-Ching
Kallman Nathan N.
Pianalto Bernard
Read-Rite Corporation
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