%0 Journal Article
%A Duc, N.H.
%A Danh, T.M.
%A Tuan, N. A.
%A Teillet, J.
%D 2001
%F SisLab:140
%J Applied Physics Letters
%K cobalt alloys;coercive force;ferromagnetic materials;heat treatment;iron alloys;magnetic multilayers;magnetostriction;soft magnetic materials;sputtered coatings;terbium alloys;7550Bb;7560Ej;7570Cn;7580+q;8140Gh;8140Rs
%N 23
%P 3648-3650
%T Large Magnetostrictive Susceptibility in Tb2013 FeCo/FeCo Multilayers
%U https://eprints.uet.vnu.edu.vn/eprints/id/eprint/140/
%V 78
%X Tb(Fe0.55Co0.45)1.5/Fen and Tb(Fe0.55Co0.45)1.5/(Fe0.5Co0.5n multilayers were fabricated by rf-magnetron sputtering from composite targets. Magnetostriction was measured using an optical deflectometer. The as-deposited films showed a soft magnetic and magnetostrictive character, with a coercive field μ0Hc=5 mT and a parallel magnetostrictive susceptibility χλ||=dλ||/d(μ0H)=1.4×10-2 T-1. This magnetostrictive softness was strongly improved by heat treatments: the magnetostrictive susceptibility attains the huge value of 5×10-2 T-1 in applied field of 6 mT. The low-field dependence of the magnetostrictive susceptibility and their technical characters are described in detail. © 2001 American Institute of Physics.