Abstract
A model is set up to investigate the magnetostrictive performance and spin response in soft/hard magnetostrictive coupled bilayers. Direct coupling between soft ferromagnet and hard TbFe2 at the interface is assumed. The magnetostriction results from the rotation of ferromagnetic vector and TbFe2 vectors from the easy axis driven by applied magnetic field. Dependence of magnetostriction on TbFe2 layer thickness and interfacial exchange interaction is studied. The simulated results reveal the compromise between interfacial exchange interaction and anisotropy of TbFe2 hard layer.
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