화학공학소재연구정보센터
Journal of the American Ceramic Society, Vol.103, No.11, 6149-6156, 2020
Templated grain growth of high coercive field CuO-doped textured PYN-PMN-PT ceramics
This paper explores the templated grain growth and texturing of Pb(Yb1/2Nb1/2)O-3-Pb(Mg1/3Nb2/3)O-3-PbTiO3(PYN-PMN-PT) ceramics. A PbO-CuO liquid phase was determined to substantially increase the growth of PYN-PMN-PT on barium titanate template particles. Texturing resulted in an 83% enhancement in strain behavior (754 pm/V) compared with random PYN-PMN-PT ceramics (413 pm/V). The increased Pb(Yb1/2Nb1/2)O-3(PYN) content of textured 21PYN-41PMN-38PT resulted in a high coercive field of 13.9 kV/cm. Residual barium titanate templates reduced the polarization from 33.7 to 26.2 mu C/cm(2)and slightly decreased the Curie temperature (236-224 degrees C). These results show that textured PYN-PMN-PT is a promising material for high strain and coercive field transducers.