Magnetostriction of ternary Fe–Ga–X (X=C,V,Cr,Mn,Co,Rh) alloys
作者： A. E. Clark , J. B. Restorff , M. Wun-Fogle , K. B. Hathaway , T. A. Lograsso
DOI: 10.1063/1.2670376
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摘要: Binary iron-gallium (Galfenol) alloys have large magnetostrictions over a wide temperature range. Single crystal measurements show that additions of 2at.% or greater 3d and 4d transition elements with fewer (V, Cr, Mo, Mn) more (Co, Ni, Rh) valence electrons than Fe, all reduce the saturation magnetostriction. Kawamiya Adachi [J. Magn. Mater. 31–34, 145 (1983)] reported D03 structure is stabilized by electron∕atom ratios both less iron iron. If ordering decreases magnetostriction, maximum magnetostriction should be largest for (more disordered) binary Fe–Ga as observed. Notably, addition small amounts C (0.07, 0.08, 0.14at.%) increases slow cooled alloy to values comparable rapidly quenched alloy. We assume atom (C, B, N) enter interstitially inhibit ordering, thus maximizing without quenching.
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