| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetoresistance effect element which suppresses spin injection magnetization inversion and can be manufactured in stable yield; and to provide a magnetic head, a magnetic recording and reproducing device, and a magnetic memory that use the same. SOLUTION: A perpendicularly energized magnetoresistance effect element has a magnetoresistance effect film having a magnetization fixed layer, a magnetization free layer, and a nonmagnetic intermediate layer; and a longitudinal bias function part for applying a longitudinal bias magnetic field to the magnetization free layer almost in parallel to a film surface of the magnetoresistance effect film, and almost perpendicularly to magnetization of the magnetization fixed layer. In such strucure as described above, the relation 1.2≤MRH/MRT is satisfied for a width MRT of the magnetization free layer in a direction nearly parallel to the longitudinal bias magnetic field, and a width MRH in a direction almost perpendicular to the longitudinal bias magnetic field and nearly parallel to the direction of a signal magnetic field. COPYRIGHT: (C)2008,JPO&INPIT
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