Magnetostriction properties of FePd thin films: Dependence on microstructure

Abnormal temperature dependence of the coercive field in FePt thin films

“…The saturation magnetostriction constant of FePt disordered films was reported by Aboaf et al [33] (λ ¼ 70 Â 10 À6 ), and more recently by Spada et al [34] (λ ¼ 34 Â 10 À6 ). There are also reported values in FePd films by Shima et al [35] (λ ¼ 65 Â 10 À6 ) and Wunderlich et al [36] (λ ¼ 250 Â 10 À6 , in films prepared at 423 K). Note that in all cases the reported magnetostriction is positive.…”

Thickness and temperature dependence of the dynamic magnetic behavior in disordered FePt films

“…These two measurements are consistent with a stress induced anisotropy that tends to disappear after a relatively low temperature annealing. There is a recent work [24] on disordered FePd thin films (which have the same crystalline structure) that shows a positive in-plane magnetostriction constant of disordered films deposited at 150 and 300 C. As the stress induced anisotropy is proportional to the product of the magnetostriction and the stress, the observation of a small in-plane anisotropy in our films is consistent with the presence of some degree of tensile stress.…”

Tunable stress induced magnetic domain configuration in FePt thin films

“…In FePd films magnetostriction values range from [45] λ = 65 × 10 −6 to λ = 250 × 10 −6 . [46] The value of K M E was estimated using a constant average value < λ >∼ 100 × 10 −6 , which has a considerable uncertainty. In any case, this is only a scale factor and does not affect the dependence of K M E with P Ar .…”