Origin of Fatigue in Ferroelectric Perovskite Oxides

スポンサーリンク

概要

• 論文の詳細を見る

• We calculated the electronic states of ferroelectric perovskite oxides, ATiO3, using the discrete variational Xα cluster method. The bond order of the π bonds between Ti 3d and O 2p as a function of titanium ion displacement in PbTiO3 shows a maximum. This result suggests that the magnitude of ferroelectricity is related to the magnitude of the π bonds. We also found that the occupancy of s electrons in A ions increases the strength of π bonds between a titanium ion and oxygen ions. This result also suggests that the magnitude of ferroelectricity is related to the magnitude of the π bonds. Therefore, we propose that the appearance of oxygen vacancies is one of the origins of fatigue in PZT because the π bonds between a titanium ion and oxygen ions are weakened by remaining electrons of oxygen vacancies.

• INSTITUTE OF PURE AND APPLIED PHYSICSの論文
• 1996-05-15

著者

• MIURA Kaoru

  Sony Corporation Research Center

• Tanaka Masahiro

  Sony Corporation Core Technology & Network Company

• Miura Kaoru

  Sony Corporation Research Center, 174 Fujitsuka-cho, Hodogaya-ku, Yokohama 240, Japan

関連論文

• Effect of La-Doping on Fatigue in Ferroelectric Perovskite Oxides
• Effect of Nb Doping on Fatigue in Lead Zirconate Titanate
• Charge Properties of Bi-Rich Strontium Bismuth Tantalate Thin Films
• Origin of Fatigue in Ferroelectric Perovskite Oxides
• Dependence of Critical Thickness on Particle-Size for Ferroelectricity in BaTiO3 by Ab Initio Calculations
• Origin of Fatigue in Ferroelectric Perovskite Oxides

スポンサーリンク