Magnetostriction of Fe-Ti Alloys

Longitudinal and transverse magnetostriction measurements were performed on polycrystalline Fe$_{100 - {\rm x}}$Ti$_{\rm x}$ alloys, for a large Ti concentration range, from ${\rm x} = $ 8.8 to 34.7 at.%. Our results showed that substituting Fe by Ti does not significantly enhance the magnetostriction. For all Ti concentrations in the magnetically saturated state, the longitudinal magnetostriction values vary from ${-}2 \times 10^{- 6}$ to $6 \times 10^{- 6}$. On the other hand, Fe$_{100 - {\rm x}}$Ti$_{\rm x}$ alloys exhibit a large forced volume magnetostriction, which increases with increasing Ti-concentration. The magnetostriction behavior could be explained considering investigations of the hyteresis loops and the microstructure .