| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an excellent soft magnetic characteristic even when a high coersive force material is used by permitting first and second ferromagnetic conductors to contain first and second ferromagnetic films which have different directions of axis of easy magnetization. SOLUTION: On a substrate 1, a free layer 2, nonmagnetic conductor layer 3 and a pin layer 4 are formed. Magnetization of the pin layer is fixed, for instance, by a diamagnetic film such as FeMn. A pair of electrodes are provided on the laminated film. The free layer 2 is composed of first and second ferromagnetic films 2-1 and 2-2. For instance, the side which makes contact with the nonmagnetic conductor layer 3 is permitted to be the first ferromagnetic film 2-1. As for a spin valve type magnetoresistance effect element, soft magnetic characteristics are not specially demanded, since magnetization of the pin layer 4 is fixed. Soft magnetic characteristic is demanded only for the free layer 2. Therefore, the conditions of multilayer and competitive magnetization are provided so as to improve the soft magnetic characteristic of only the free layer 2.</p> |
