DIFFUSION AND CONDUCTIVITY IN NA+-CD2+ BETA-ALUMINA

被引：28

作者：

SUTTER, PH

CRATTY, L

SALTZBERG, M

FARRINGTON, GC

机构：

[1] Univ of Pennsylvania, Dep of, Materials Science, Philadelphia, PA,, USA, Univ of Pennsylvania, Dep of Materials Science, Philadelphia, PA, USA

来源：

SOLID STATE IONICS | 1983年 / 9-10卷 / DEC期

关键词：

ALUMINA - Electric Conductivity - IONS - Diffusion;

D O I：

10.1016/0167-2738(83)90250-3

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：

The diffusion coefficient for Na** plus at 335 degree C in single crystals of beta alumina has been measured as a function of increasing divalent cadmium concentration. The conductivities of the same compositions were determined over the temperature range of 25-400 degree C. The results reveal that the conductivity in these mixed crystals actually increases when small ( less than 20%) concentrations of the sodium ions are exchanged for cadmium. The data are consistent with the expected interstitialcy mechanism for sodium ion diffusion when the concentration of ions is greater than 1/Beevers-Ross site and a vacancy mechanism when the concentration of ions is less than 1/Beevers-Ross site.

引用

页码：295 / 298

页数：4

共 4 条

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[J]. JOURNAL OF CHEMICAL PHYSICS, 1975, 63 (02) : 772 - 778
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WHITTINGHAM, MS
HUGGINS, RA
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 1971, 118 (01) : 1 - +
[4] MECHANISM OF DIFFUSION IN SODIUM BETA ALUMINA
WOLF, D
[J]. JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, 1979, 40 (10) : 757 - 773

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