MAGNETIC SENSOR HAVING HARD BIAS STRUCTURE FOR OPTIMIZED HARD BIAS FIELD AND HARD BIAS COERCIVITY
PROBLEM TO BE SOLVED: To provide a magnetic read sensor having a hard bias structure that extends beyond the back edge of a sensor stack by a controlled distance that is chosen to maximize both hard bias field and hard bias coercivity and anisotropy.SOLUTION: A hard bias structure 332, 334 has a bac...
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Main Authors | , , , , |
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Format | Patent |
Language | English |
Published |
08.07.2013
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Subjects | |
Online Access | Get full text |
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Summary: | PROBLEM TO BE SOLVED: To provide a magnetic read sensor having a hard bias structure that extends beyond the back edge of a sensor stack by a controlled distance that is chosen to maximize both hard bias field and hard bias coercivity and anisotropy.SOLUTION: A hard bias structure 332, 334 has a back edge that is well defined and that has a square corner at its innermost end adjacent to a sensor stack 302. The magnetic sensor can be constructed by a process that includes separate masking and milling processes that are dedicated to defining the back edge of the hard bias structure. |
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Bibliography: | Application Number: JP20120279517 |