%0 Journal Article
%A Danh, T.M.
%A Duc, N.H.
%A Thanh, H. N.
%A Teillet, J.
%D 2000
%F SisLab:143
%J Journal of Applied Physics
%K Mossbauer effect;X-ray diffraction;amorphous magnetic materials;annealing;cobalt alloys;hyperfine interactions;iron alloys;magnetic moments;magnetic thin films;magnetostriction;metallic thin films;noncrystalline structure;perpendicular magnetic anisotropy;sputtered coatings;terbium alloys;6143Dq;6855-a;7170Jp;7530Cr;7530Gw;7550Kj;7570Ak;7580+q;7680+y;8105Bx;8140Gh;8140Rs
%N 10
%P 7208-7212
%T Magnetic, Mossbauer and magnetostrictive studies of amorphous Tb(Fe0.55Co0.45)1.5 films
%U https://eprints.uet.vnu.edu.vn/eprints/id/eprint/143/
%V 87
%X The Tb(Fe0.55Co0.45)1.5 films were fabricated by rf magnetron sputtering from a composite target. Samples were investigated by means of x-ray diffraction, vibrating sample magnetometer, conversion electron Mössbauer spectra, and magnetostriction measurements. The as-deposited film is an amorphous alloy with a perpendicular magnetic anisotropy and an intrinsic magnetostriction λ=1080×10-6 in an applied field of 0.7 T. In this state, it was determined that the hyperfine field Bhf=23.5 T and the cone-angle between the Fe moment direction and the film-normal direction β=12°. After annealing in the temperature range of TA=250–450 °C the amorphous structure still remained, however the anisotropy was changed to a parallel one. The soft magnetostrictive behavior has also been improved by these heat treatments: the parallel magnetostriction λ||=465×10-6 was almost developed in low applied fields of less than 0.1 T and, especially, a huge magnetostrictive susceptibility χλ=dλ||/d(μ0H)=1.8×10-2 T-1 was obtained at μ0H=15 mT. © 2000 American Institute of Physics.