%0 Journal Article
%J Ieee Transactions on Magnetics
%D 2009
%T Magnetoelasticity of Fe100-xGex(5 < x < 18) Single Crystals From 81 K to 300 K
%A Petculescu, G.
%A LeBlanc, J. B.
%A Wun-Fogle, M.
%A Restorff, J. B.
%A Burton, W. C.
%A Cao, J. X.
%A Wu, R. Q.
%A Yuhasz, W. M.
%A Lograsso, T. A.
%A Clark, A. E.
%K alloys
%K constants
%K elastic constants
%K gallium alloys
%K germanium alloys
%K iron alloys
%K magnetoelasticity
%K magnetostriction
%K surfaces
%M ISI:000270149700190
%P 4149-4152
%R 10.1109/Tmag.2009.2025969
%U ://000270149700190
%V 45
%X Temperature dependent magnetoelastic properties of Fe100-xGex(5 < x < 18) single crystals have been measured. Tetragonal magnetostriction (3/2)lambda(100) measurements at x = 5.7, 12.1, 14.9, and 17.7 were performed between 78 K and 426 K and resonant ultrasound spectroscopy measurements were used to determine the shear elastic constant c' from 5 K to 300 K for x = 6.4, 7.2, 10.8, 14.6, 17.7, and 17.9. A clear distinction was observed between the temperature dependencies of lambda(100) for the A2 and D0(3) phases of Fe100-xGex. The elastic constant c' displays a monotonic decrease with concentration through the different phases (6 < x < 18) and at all temperatures. Experimental values of the tetragonal magnetoelastic coupling constant -b(1) at 81 K were remarkably consistent with theoretical values determined by density functional calculations at 0 K.
%Z Sp. Iss. SI498OATimes Cited:0Cited References Count:13
%8 10/01
%@ 0018-9464