Magnetoelectric (ME) voltage coefficient of plate layered magnetostrictive-piezoelectric composites was always considered independent of the in-plane size due to the oversimplification in ME theoretical models. Here w...Magnetoelectric (ME) voltage coefficient of plate layered magnetostrictive-piezoelectric composites was always considered independent of the in-plane size due to the oversimplification in ME theoretical models. Here we report that the ME voltage coefficient depends on the in-plane size owing to shape demagnetization effect on magnetostriction. Both theoretical analysis and experimental results indicate that ME voltage coefficient of layered ME composites changes with the variation in in-plane sizes (length and width). ME coefficient increases with a rise in in-plane sizes, and different aspect ratio also results in different ME coefficients. Proper design of in-plane shape will greatly promote the develop- ment of ME devices.展开更多
基金Supported by the National Natural Science Foundation of China (Grant No. 50572006)the Program for Changjiang Scholars and Innovative Research Team in University (Grant No. IRT 0509)
文摘Magnetoelectric (ME) voltage coefficient of plate layered magnetostrictive-piezoelectric composites was always considered independent of the in-plane size due to the oversimplification in ME theoretical models. Here we report that the ME voltage coefficient depends on the in-plane size owing to shape demagnetization effect on magnetostriction. Both theoretical analysis and experimental results indicate that ME voltage coefficient of layered ME composites changes with the variation in in-plane sizes (length and width). ME coefficient increases with a rise in in-plane sizes, and different aspect ratio also results in different ME coefficients. Proper design of in-plane shape will greatly promote the develop- ment of ME devices.
