Abstract
The Fe0.7Co0.3 alloy has a large magnetostriction value and a high saturation magnetization. We have investigated the magnetostriction and magnetic properties of bcc Fe-Co-RE (RE: rare earth elements). These films were prepared by DC triode sputtering method. An addition of the RE elements Pr and Tb Were found to increase the magnetostriction value, while the addition of RE elements Ce, Nd, Sm and Er decreased it. These alloy films all exhibited a high saturation magnetization value, greater than 200 emu/g. This occured upon an addition of a small percentage of the RE element. These films may be useful as soft magnetic materials.
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