Magnetization and magnetostriction in amorphous binary TbFe and DyFe and amorphous and polycrystalline, ternary (TbxDy1−x)yFe100−y thin films have been investigated. The measurements reflect the compositional dependence of the easy direction of magnetization in the films. In plane magnetostrictions of over 300×10−6 were measured for some of the amorphous TbFe and TbDyFe films and values greater than 750×10−6 were obtained in polycrystalline TbDyFe films near to the Terfenol composition.
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Grundy et al. (1994) studied this question.
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