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Room temperature magnetic response of sputter deposited TbDyFe films as a function of the deposition parameters

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Resumo:Magnetostrictive thin films of the ternary compound (TbyDy1-y)xFe1-x have been prepared by magnetron sputtering from a Terfenol D target onto both room-temperature and high-temperature substrates (TS<550 ºC). The aim is to select the deposition parameters of this highly magnetostrictive material in order to optimize its magnetic response. Films prepared on room-temperature substrates were amorphous and those deposited at high temperatures have a microstructure consisting of small grains of RFe2 compound and some RE oxide phases. Deposition temperatures around 550 ºC promotes in-plane orientation of (220) and (311) planes of RFe2 phase. The magnetization measurements performed at room temperature showed that depending on the processing conditions the material changes from a soft magnetic behavior with perpendicular anisotropy to a two phase system with both hard and soft magnetic phases.
Autores principais:Rebouta, L.
Outros Autores:Martins, P.; Lanceros-Méndez, S.; Barandiaran, J. M.; Gutierrez, J.; Alves, L. C.
Assunto:Terfenol D magnetization magnetostriction sputtering
Ano:2012
País:Portugal
Tipo de documento:artigo
Tipo de acesso:acesso restrito
Instituição associada:Universidade do Minho
Idioma:inglês
Origem:RepositóriUM - Universidade do Minho

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