| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetic conversion element and a thin film magnetic head having a large resistance change rate, a large resistance change amount and excellent characteristic stability. SOLUTION: A layered product 20 of an MR element is constituted of an anti-ferromagnetic layer 22, a ferromagnetic layer 23, a first non-magnetic layer 24, a first soft magnetic layer 25, a second soft magnetic layer 26, a second non-magnetic layer 27 and a high resistance layer 28 which are successively layered on a base layer 21. The direction of magnetization of the ferromagnetic layer 23 is fixed by the switched connection with the anti-ferromagnetic layer 22 and the directions of magnetization of the first soft magnetic layer 25 and the second soft magnetic layer 26 are changed by an external magnetic field and the electric resistance of the layered product 20 is changed in accordance with their relative angle. The high resistance layer 28 has a higher electric resistance value than that of the second non-magnetic layer 27. The resistance change rate and the resistance change amount can be increased and further the stability of characteristics can be enhanced by providing the second non-magnetic layer 27 and the high resistance layer 28 on the side opposite to the first non-magnetic layer of the second soft magnetic layer 26.
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