|
Z. Naturforsch. 66a, 489 – 494
(2011)
doi:10.5560/ZNA.2011-0012
The Effect of Substrate Clamping on Laminated Magnetoelectric Composite
College of Materials Science and Engineering, Sichuan University, Chengdu 610064, China
Received November 26, 2010 / revised March 21, 2011
Reprint requests to: J.-G. Z.; E-mail:
guohongli@scu.edu.cn
A theory model was established to calculate the magnetoelectric voltage coefficient of piezoelectric/piezomagnetic laminated composites on silicon or magnesium oxide substrates. The magnetoelectric voltage coefficient is calculated as function of interface coupling factor k, volume ratio of piezoelectrics to piezomagnetic, and volume ratio of substrates to composite. It was found that the magnetoelectric voltage coefficient decreases as the interface coupling factor k weakens, while the volume ratio of piezoelectrics to piezomagnetic v max shifts to lead-rich compositions. The magnetoelectric voltage coefficient of laminated composites decreases sharply with increasing substrates thickness ratio, which shows strong substrate clamping effect to the magnetoelectric composite.
Key words: Magnetoelectric; ME Voltage Coefficient; Clamping.