Abstract
The magnetomechanical behavior of single-crystal iron–gallium alloys with varying galliumcontent was found to be strongly dependent on the Ga content (Atulasimha 2006 PhD Thesis).An energy-based model (Atulasimha 2006 PhD Thesis, Armstrong and William 1997 J.Appl. Phys. 81 2321) is employed to simulate the strikingly different actuation behavior(λ–H and B–H curves under different compressive stresses) and validated against experimental data for19, 24.7 and 29 at.% Ga, [100] oriented, slow-cooled single-crystal FeGa alloys.The effect of gallium content on the model parameters, specifically the cubicmagnetocrystalline anisotropy constants and the Armstrong-smoothing factorΩ, their physical significance and ultimately their effect on the magnetomechanical behaviorare analyzed and explained.
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