| 摘要 |
PROBLEM TO BE SOLVED: To provide a magnetoresistance effect film which uses a vertical magnetization film and has a greater change rate of magnetoresistance. SOLUTION: In the magnetoresistance effect film including first and second magnetic layers 52, 56, and a non-magnetic layer 54 held between the first and second magnetic layers 52, 56, at least one of the first and second magnetic layers 52, 56 is constructed as a ferrimagnetic layer which uses rare earth metals Fe and Co as chief components, and high spin polarizability magnetic layers 53, 55 are formed between the non-magnetic layer 54 and the ferrimagnetic layers 52, 56, which comprises Fe and Co, and exchange-couples with the ferrimagnetic layers 52, 56.
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