Dynamic magnetostrictive properties of magnetization-graded ferromagnetic material and application in magnetoelectric composite

摘要

This paper investigates the dynamic magnetostrictive properties in a laminate ferromagnetic material FeCuNbSiB/Ni (FN) consisting of a Nickel (Ni) plate and the Fe-based nanocrystalline alloy (FeCuNbSiB) foils. The resonant dynamic piezomagnetic coefficient (d_(33,m)) is studied particularly in experiments. The experimental results demonstrate that the d_(33,m) versus DC bias magnetic field data of FN show strong hysteretic and remanent behaviors. The zero-biased d_(33,m) ranges from 5.14 to 42.7 (nm/A), depending on the numbers of FeCuNbSiB layer L. The maximum zero-biased d_(33,m) of FN is 42.7 nm/A for FN with L = 4, which is ～24.1 times larger than that of Ni. By combining FN with piezoelectric Pb(Zr_(0.52),Ti_(0.48))O_3 (PZT), a giant zero-biased magnetoelectric voltage coefficient α_(ME) of ～89.2 (V/cm Oe) is observed in composite FN/PZT/FN. Thus, the laminate magnetostrictive layer FN can be used for obtaining a self-biased magnetoelectric composite.