PHASE RELATION IN THE SYSTEM - (LA1-XSRX)1-YMNO3+Z AND (LA1-XCAX)1-YMNO3+Z

被引：128

作者：

TAKEDA, Y ^{[1
]}

NAKAI, S ^{[1
]}

KOJIMA, T ^{[1
]}

KANNO, R ^{[1
]}

IMANISHI, N ^{[1
]}

SHEN, GQ ^{[1
]}

YAMAMOTO, O ^{[1
]}

MORI, M ^{[1
]}

ASAKAWA, C ^{[1
]}

ABE, T ^{[1
]}

机构：

[1] CENT RES INST ELECT POWER IND,YOKOSUKA 20401,JAPAN

来源：

MATERIALS RESEARCH BULLETIN | 1991年 / 26卷 / 2-3期

关键词：

LANTHANUM; CALCIUM; STRONTIUM; MANGANESE; OXIDES;

D O I：

10.1016/0025-5408(91)90005-7

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The phase relation in the system, (La(1-x)A(x))(1-y)MnO3+z (A = Sr and Ca), has been investigated by XRD method. The system showed the A site deficiency in ABO3 perovskite structure, and the range, y, was less than 0.1 when x = 0, which decreased with increasing alkaline earth content, x. Three single phases with different structure were observed in this system; two orthorhombic structures based on the orthoferrite GdFeO3 type and a rhombohedral structure based on the LaAlO3 type. The latter has more oxygen in the structure than the former two. The electrical conductivity was measured for Sr doped samples up to 1000-degrees-C. In spite of the large composition dependent conductivity at room temperature, all the samples showed the almost same values of 60-90 Scm-1 at 1000-degrees-C.

引用

页码：153 / 162

页数：10

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