CHANGES IN THE PHASES AND ELECTRICAL-CONDUCTION PROPERTIES OF (LA1-XSRX)1-YMNO3-DELTA

被引：51

作者：

OTOSHI, S ^{[1
]}

SASAKI, H ^{[1
]}

OHNISHI, H ^{[1
]}

HASE, M ^{[1
]}

ISHIMARU, K ^{[1
]}

IPPOMMATSU, M ^{[1
]}

HIGUCHI, T ^{[1
]}

MIYAYAMA, M ^{[1
]}

YANAGIDA, H ^{[1
]}

机构：

[1] UNIV TOKYO,ADV SCI & TECHNOL RES CTR,MEGURO KU,TOKYO 153,JAPAN

来源：

JOURNAL OF THE ELECTROCHEMICAL SOCIETY | 1991年 / 138卷 / 05期

关键词：

D O I：

10.1149/1.2085819

中图分类号：

O646 [电化学、电解、磁化学];

学科分类号：

081704 ;

摘要：

Perovskite oxides (La(1-x)Sr(x))(1-y)MnO3-delta, [(La(1-x)Sr(x))0.94MnO3-delta (0.08 less-than-or-equal-to x less-than-or-equal-to 0.30) and (La0.89Sr0.11)(1-y)MnO3-delta, (0.06 < y < 0.11)] containing A site defects were studied by thermal analysis, measuring of the temperature dependence of electrical conductivity (373-1273 K) and x-ray diffraction. The results showed that (La(1-x)Sr(x))0.94MnO3-delta (0.08 less-than-or-equal-to x less-than-or-equal-to 0.21) underwent a phase transition accompanied by oxygen desorption at about 1000 K in air. The electrical conduction mechanism also changed from small-polaron conduction. The amount of oxygen desorption accompanying the phase transition decreased stoichiometrically with increasing Sr content.

引用

页码：1519 / 1523

页数：5

共 8 条

[1] HIGUCHI T, IN PRESS
[2] LOCALIZED LEVEL HOPPING TRANSPORT IN LA(SR)CRO3
KARIM, DP
ALDRED, AT
[J]. PHYSICAL REVIEW B, 1979, 20 (06): : 2255 - 2263
[3] KERTESZ M, 1989, J SOLID STATE CHEM, V42, P125
[4] OXIDATION-REDUCTION BEHAVIOR OF UNDOPED AND SR-DOPED LAMNO3 NONSTOICHIOMETRY AND DEFECT STRUCTURE
KUO, JH
ANDERSON, HU
SPARLIN, DM
[J]. JOURNAL OF SOLID STATE CHEMISTRY, 1989, 83 (01) : 52 - 60
[5] MIZUSAKI J, 1989, P SOFC NAGOYA, P65
[6] NAKANISHI T, 1990, CERAMICS JAPAN, V25, P614
[7] SHIMOYAMA J, 1988, 53TH P CHEM SOC JAP, pI263
[8] YOKOKAWA H, 1989, DENKI KAGAKU, V57, P829

← 1 →