TRANSPORT-PROPERTIES OF POLYCRYSTALLINE SAMPLES OF CALCIUM AND MAGNESIUM OXIDES - EXPERIMENTAL AND THEORETICAL APPROACHES

被引：2

作者：

DEROIDE, B ^{[1
]}

BERTHEVILLE, B ^{[1
]}

ZANCHETTA, JV ^{[1
]}

机构：

[1] UNIV MONTPELLIER 2,PHYSICOCHIM MAT SOLIDES LAB,CNRS,URA DO407,F-34095 MONTPELLIER 5,FRANCE

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 1995年 / 56卷 / 07期

关键词：

OXIDES; TRANSPORT PROPERTIES;

D O I：

10.1016/0022-3697(95)00018-6

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Alternating- and direct-current experiments have been carried out on polycrystalline CaO and MgO. As these solids are very poor conductors the study was made at high temperatures (up to 1000 degrees C) and as a function of compactness. Alternating-current conductivity shows the appearance of a polarization component. A simple electronic model cannot fully explain the results, but one based on a typical double-well potential is more satisfactory. It is assumed that ionic species are responsible for a large part of the conductivity. The number of carriers and the height of the potential barrier are evaluated.

引用

页码：989 / 994

页数：6

共 28 条

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