Effect of Microstructure on Magnetoelectric Properties of 0.9Pb(Zr0.52Ti0.48)O3--0.1Pb(Zn1/3Nb2/3)O3 and Ni0.8Zn0.2Fe2O4 Particulate Composites

概要

論文の詳細を見る
The effects of magnetostrictive particle distribution on magnetoelectric (ME) properties were investigated in a 3--0 ME composite made of piezoelectric [0.9Pb(Zr0.52Ti0.48)O3--0.1Pb(Zn1/3Nb2/3)O3 + 0.005Mn; PZT--PZN] and 20 wt % magnetostrictive (Ni0.8Zn0.2Fe2O4; NZF) materials. X-ray diffraction (XRD) analysis and energy dispersive X-ray spectroscopy (EDS) results showed that PZT--PZN and NZF did not react with each other and coexisted without severe inter-diffusion. The larger interface area due to the smaller particle size offered greater Fe3+ diffusion into the piezoelectric PZT--PZN, which increased the piezoelectric mechanical quality factor of the 3--0 composite. In addition, the ME property (dE/dH) was also enhanced by the smaller NZF particle size, and this enhancement was attributed to the magnetically induced, homogeneous stress field exerted by NZF onto PZT--PZN.
2011-11-25