DC ELECTRICAL-RESISTIVITY OF NB-DOPED BATIO3 AND EPR MEASUREMENTS

被引：55

作者：

GILLOT, C ^{[1
]}

MICHENAUD, JP ^{[1
]}

MAGLIONE, M ^{[1
]}

JANNOT, B ^{[1
]}

机构：

[1] UNIV BOURGOGNE,PHYS SOLIDE LAB,F-21004 DIJON,FRANCE

来源：

SOLID STATE COMMUNICATIONS | 1992年 / 84卷 / 11期

关键词：

D O I：

10.1016/0038-1098(92)90434-B

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

DC electrical resistivity measurements along the c-axis of Nb-doped BaTiO3 single crystals are presented in a wide range of temperature, covering the four phases, with special attention to the rhomboedral one. The temperature dependence of the conductivity leads to convincing arguments in favour of a polaronic mechanism. Below the orthorhombic-rhomboedral transition point, a strong increase of the resistivity is observed. The correlation of this behavior with EPR analysis in the same temperature range, is consistent with a sharp trapping of the ''free'' electrons, when the temperature decreases.

引用

页码：1033 / 1038

页数：6