Magnetostriction of FM/TbFe (FM=Fe, Py-permalloy, FeCo) coupled bilayer

► Choosing TbFe as magnetostrictive layer and with soft ferromagnetic material (FM=Fe, Py-permalloy, FeCo) as inductive layer. ► We report the magnetization and magnetostriction of the S/FM(10 nm)/TbFe(10 nm) coupled bilayer (S-glass substrate). ► The magnetization of coupled bilayer is attributed to soft ferromagnetic layer and there is no contribution from TbFe layer. ► Interfacial exchange interaction plays an important role in determining the magnetostriction of the coupled bilayer.