| 摘要 |
Magnetization of the free magnetic layer can be induced along the X-direction (the track direction) shown in the drawing due to the inverse magnetostriction effect even when a tensile stress is applied along the Y-direction (the height direction) of the free magnetic layer 4 shown in the drawing, because the saturation magnetostriction constant lambda s of the free magnetic layer 4 is adjusted to within the range of -2x10-6</= lambda s</=0, more preferably -1x10-6</= lambda s</=0, thereby allowing magnetization of the free magnetic layer to be favorably reversed to approach asymmetry to zero (improve asymmetry). |
