Thermally stimulated depolarization current measurements in cubic and tetragonal yttria-stabilized zirconia

被引：9

作者：

Horiuchi, Naohiro ^{[1
]}

Tsuchiya, Yu ^{[1
]}

Nozaki, Kosuke ^{[1
]}

Nakamura, Miho ^{[1
]}

Nagai, Akiko ^{[1
]}

Yamashita, Kimihiro ^{[1
]}

机构：

[1] Tokyo Med & Dent Univ, Inst Biomat & Bioengn, Dept Inorgan Biomat, Chiyoda Ku, Tokyo 1010062, Japan

来源：

SOLID STATE IONICS | 2014年 / 262卷

关键词：

YSZ; Defect structure; Thermally stimulated current; ELECTRICAL-CONDUCTIVITY; ELEVATED-TEMPERATURES; ELECTRONIC-PROPERTIES; NEUTRON-SCATTERING; IONIC-CONDUCTIVITY; OXYGEN DIFFUSION; SINGLE-CRYSTALS; PHASE-STABILITY; SIMULATION; SYSTEMS;

D O I：

10.1016/j.ssi.2013.12.034

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Thermally stimulated depolarization current (TSDC) measurements were performed on 3 mol% and 8 mol% yttria stabilized zirconia ceramics (3YSZ and 8YSZ), in order to observe defect associations. Several TSDC peaks were observed, and the characteristics suggested that the peaks were attributed to space charge polarization due to long range migration of oxygen vacancies and electric dipole polarization due to trimeric defect association of Y at Zr site (Y-Zr') and oxygen vacancy (Vo). The activation energies for the dipole polarizations were different between 3YSZ and SYSZ. The difference was caused by the difference of the structure of defect association. In addition, in 3YSZ, peaks with high activation energy of 124 eV were observed. The high activation energy suggests the presence of oxygen migration across Y-Y edges, in other word, indicating that Y-Y pairs exist in 3YSZ (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：500 / 503

页数：4

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