TY - JOUR
T1 - Effect of rare earth additives on the microstructure and dielectric properties of 0.67Pb(Mg1/3Nb2/3)O3-0. 33PbTiO3 ceramics
AU - Zhong, Ni
AU - Xiang, Ping Hua
AU - Sun, Da Zhi
AU - Dong, Xian Lin
PY - 2005/1/25
Y1 - 2005/1/25
N2 - Microstructure and dielectric properties of relaxor ferroelectrics in the solid solution, formulated 0.67Pb(Mg1/3Nb2/3) O 3-0.33PbTiO3 + 2 mol% RE (RE = Sm, Nd, Yb or Ce), have been investigated. The effects of these dopants on microstructure, maximum dielectric constant (Kmax) and degree of ordering, etc. have been studied. It was found that doping of Sm, Nd and Ce reduced Kmax from 23924 to 14921, 13466 and 12511 respectively, while the doping of Yb increased Kmax to 27759. The variation of Kmax is analyzed according to grain size, domain structure and order-disorder behavior. Diffuseness of the phase transition is calculated to indicate order-disorder behavior, which is roughly opposite to that of Kmax. The present results show that order-disorder behavior is the key factor on Kmax of PMN-PT ceramics near morphotropic phase boundary.
AB - Microstructure and dielectric properties of relaxor ferroelectrics in the solid solution, formulated 0.67Pb(Mg1/3Nb2/3) O 3-0.33PbTiO3 + 2 mol% RE (RE = Sm, Nd, Yb or Ce), have been investigated. The effects of these dopants on microstructure, maximum dielectric constant (Kmax) and degree of ordering, etc. have been studied. It was found that doping of Sm, Nd and Ce reduced Kmax from 23924 to 14921, 13466 and 12511 respectively, while the doping of Yb increased Kmax to 27759. The variation of Kmax is analyzed according to grain size, domain structure and order-disorder behavior. Diffuseness of the phase transition is calculated to indicate order-disorder behavior, which is roughly opposite to that of Kmax. The present results show that order-disorder behavior is the key factor on Kmax of PMN-PT ceramics near morphotropic phase boundary.
KW - Dielectric properties
KW - Diffuseness of the phase transition
KW - Grain size
UR - https://www.scopus.com/pages/publications/20444391476
U2 - 10.1016/j.mseb.2004.09.030
DO - 10.1016/j.mseb.2004.09.030
M3 - 文章
AN - SCOPUS:20444391476
SN - 0921-5107
VL - 116
SP - 140
EP - 145
JO - Materials Science and Engineering: B
JF - Materials Science and Engineering: B
IS - 2
ER -