PHASE-TRANSITIONS IN ND1-XCAXMNO3 PEROVSKITES

被引：8

作者：

TROYANCHUK, IO

PASTUSHONOK, SN

NOVITSKII, OA

PAVLOV, VI

机构：

[1] Institute of Physics of Solids and Semiconductors, Minsk

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 1993年 / 124卷 / 1-2期

关键词：

12;

D O I：

10.1016/0304-8853(93)90069-E

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A study is made of Nd1-xCaxMnO3 perovskites by the dilatometry, IR spectroscopy and X-ray methods, and their magnetic and electrical properties are investigated. It is established that the removal of the cooperative Jahn-Teller distortions occurs via the first-order phase transition with a considerable reduction in the unit cell volume. No correlation between magnetic and electrical properties is found. The magnetic properties are interpreted in terms of the mechanism of superexchange interactions through anions.

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页码：55 / 61

页数：7

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