Comprehensive three dimensional hysteretic magnetomechanical model and its validation with experimental ⟨110⟩ single-crystal iron-gallium behavior

A unique modeling approach is introduced, which can track the hysteretic evolution of volume fractions of magnetic moments in several directions and has the potential to predict the magnetomechanical behavior accurately along several important crystallographic directions. The model is benchmarked against the [110] oriented single-crystal Fe(82)Ga(18) experimental magnetomechanical behavior. The different physical effects such as flipping of moments between easy directions versus gradual rotation of moments from easy toward the noneasy directions can be captured by this model. The ability of this model to capture these effects along with hysteresis, some of which are lacking in the previous models, are explained. (C) 2008 American Institute of Physics.