Symmetry of High-Piezoelectric Pb Based Complex Perovskites at the Morphotropic Phase Boundary: II. Theoretical Treatment

Yasusada Yamada; Yoshiaki Uesu; Masaaki Matsuda; Kouji Fujishiro; Dave E. Cox; Beatriz Noheda; Gen Shirane

doi:10.1143/jpsj.71.966

Yasusada Yamada, Yoshiaki Uesu, Masaaki Matsuda, Kouji Fujishiro, Dave E. Cox, Beatriz Noheda, Gen Shirane

著者情報

Yasusada Yamada
Advanced Research Institute, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555
Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195
Yoshiaki Uesu
Advanced Research Institute, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555
Department of Physics, Waseda University, 3-4-1 Okubo, Shinjuku-ku, Tokyo 169-8555
Masaaki Matsuda
Advanced Science Research Center, Japan Atomic Energy Research Institute, Tokai, Ibaraki 319-1195
Kouji Fujishiro
Materials and Structures Laboratory, Tokyo Institute of Technology, 4259 Nagatsuda, Midori-ku, Yokohama 226-8503
Dave E. Cox
Department of Physics, Brookhaven National Laboratory, Upton, New York 11973
Beatriz Noheda
Department of Physics, Brookhaven National Laboratory, Upton, New York 11973
Gen Shirane
Department of Physics, Brookhaven National Laboratory, Upton, New York 11973

キーワード: Piezoelectricity, morthotropic phase boundary, neutron diffraction, Pb(Zn_1/3Nb_2/3)O₃/9% PbTiO₃

ジャーナル認証あり

2002 年 71 巻 3 号 p. 966-970

DOI https://doi.org/10.1143/jpsj.71.966

詳細

抄録

The structural characteristics of the perovskite-based ferroelectric Pb(Zn_1/3Nb_2/3)_1-xTi_xO₃ at the morphotropic phase boundary (MPB) region (x∼eq 0.09) have been analyzed. The analysis is based on the symmetry adapted free energy functions under the assumption that the total polarization and the unit cell volume are conserved during the transformations between various morphotropic phases. Overall features of the relationships between the observed lattice constants at various conditions have been consistently explained. The origin of the anomalous physical properties at MPB is discussed.

責任著者(Corresponding author)

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