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Erschienen in:
2001 | OriginalPaper | Buchkapitel
Magnetic Properties of Rare Earth-Fe Amorphous Films Under Applied Stress
verfasst von : Massimo Pasquale, Anna Infortuna, Sang Ho Lim
Erschienen in: Smart Materials
Verlag: Springer Berlin Heidelberg
Enthalten in: Professional Book Archive
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The magnetic properties of TbFe and SmFeB giant magnetostrictive films are measured under applied stress in a cantilever configuration. The 1μm thick films are produced on 200 μm thick Si (100) substrates by magnetron sputtering in Ar atmosphere. Magnetic characterization is obtained with complementary fluxmetric and magneto-optic Kerr effect methods. The role of stress-induced anisotropy is discussed, with reference to the intrinsic and thermally induced anisotropy which can lie in-plane or out-of-plane depending on composition and preparation conditions. Optimal film compositions are determined for sensors and actuators requiring magnetic softness and large stress sensitivity.