The magnetoelectric effect in Ni-Fe alloy/ZnO nanorod array composites

Nanotechnology. 2008 Dec 3;19(48):485709. doi: 10.1088/0957-4484/19/48/485709. Epub 2008 Nov 12.

Abstract

Ni-Fe alloy/ZnO nanorod composites were fabricated and the magnetoelectric effect was demonstrated. The ZnO and Ni-Fe alloy serve as the piezoelectric phase and the magnetostrictive phase in the nanocomposite, respectively. Since the nanorod structure possesses the inherent nature of a large surface-to-volume ratio, it greatly enhances the interplay between the piezoelectric and magnetostrictive coupling. Besides, the substrate clamping effect can be avoided. Our newly devised composite therefore provides a different species for magnetoelectric applications. It is interesting that the magnetoelectric voltage coefficient determined by the direct measurement method can reach a value as high as 0.48 mV cm(-1) Oe(-1).