A NEW ASSESSMENT OF IONIC-CONDUCTIVITY OF YBA2CU3OX VIA AC-IMPEDANCE SPECTROSCOPY COMBINED WITH DC RELAXATION

被引：12

作者：

LEE, JS

YOO, HI

机构：

[1] Department of Inorganic Materials Engineering, Seoul National University

[2] Korea Institute of Science and Technology, 130-650 Cheongryang, Seoul

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1995年 / 142卷 / 04期

关键词：

D O I：

10.1149/1.2044147

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

The ionic conductivity of YBa2Cu3Ox has been determined from the Warburg impedance at the lowest end of a full impedance spectrum which was constructed by combining a partial spectrum directly measured by ac impedance spectroscopy and the Fourier-Laplace transform of de relaxation. In the tetragonal. regime, the ionic conductivity has been found to be essentially independent of oxygen partial pressure with an activation energy of 2.46 +/- 0.05 eV. It is also suggested that the conductivity in the orthorhombic regime is Little dependent on oxygen partial pressure but with an activation energy of 1.58 +/- 0.03 eV. The reported data on ionic transport are exhaustively reviewed in comparison with the present result.

引用

页码：1169 / 1176

页数：8

共 37 条

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