Microstructure And Magnetostriction Of Sm-Fe Gmfs
VACUUM TECHNOLOGY AND SURFACE ENGINEERING - PROCEEDINGS OF THE 9TH VACUUM METALLURGY AND SURFACE ENGINEERING CONFERENCE(2009)
摘要
In this paper, both technologies of ion beam sputtering deposition (IBSD) and vacuum casting alloy target were used to fabricate Sm-Fe giant magnetostrictive thin films (Sm-Fe GMFs). The films were annealed at different temperatures under vacuum condition. The results showed that under the fixed fabrication procedure of IBSD, compact amorphous Sm-Fe GMFs with smooth surface and high interfacial adhesion had been deposited. With post-annealing temperature rising, the microstructure of the films had been changed as following order: amorphous amorphous -> microcrystalline+nano-polycrystalline (crystallization temperature was about 400 degrees C), and magnetostriction of films had changed as well. It was note that after properly annealing, the magnetostriction of Sm-Fe GMFs could be drastically improved (lambda could reach about -350x10(-6) at an applied magnetic field of 50KA.m(-1)).
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关键词
Sm-Fe GMFs, Microstructure, Magnetostriction
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