Effect of sintering temperature and grain size on the electrical transport properties of La0.67Sr0.33MnO3 manganite

被引：39

作者：

Baaziz, H. ^{[1
]}

Maaloul, N. K. ^{[2
]}

Tozri, A. ^{[1
]}

Rahmouni, H. ^{[2
]}

Mizouri, S. ^{[2
]}

Khirouni, K. ^{[2
]}

Dhahri, E. ^{[1
]}

机构：

[1] Univ Sfax, Fac Sci, Appl Phys Lab, Sfax 3000, Tunisia

[2] Univ Gabes, Fac Sci Gabes, Lab Phys Mat & Nanomat Appl Environm, Cite Erriadh 6079, Gabes, Tunisia

来源：

CHEMICAL PHYSICS LETTERS | 2015年 / 640卷

关键词：

Strontium - Strontium compounds - Grain size and shape - Grain boundaries - Lanthanum - Metal analysis - Transport properties - Lanthanum compounds - Sintering;

D O I：

10.1016/j.cplett.2015.10.012

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of sintering temperature and grain size on the electrical transport properties of lanthanum-based manganite, La0.67Sr0.33MnO3, was investigated by impedance spectroscopy technique. The sintering temperature was varied from 600 degrees C to 1000 degrees C. From dc-conductivity analysis, it is found that increasing sintering temperature improved the electrical conductivity and does not change the value of the temperature of metal-semiconductor transition. Such results have been explained in terms of core-shell model. The presence of relaxation phenomenon in the material was detected by complex impedance analysis. Also, such analysis confirms the contribution of grain boundary in the electrical properties of the lanthanum-manganite. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：77 / 81

页数：5

共 27 条

[1] REVIEW OF P-TYPE DOPED PEROVSKITE MATERIALS FOR SOFC AND OTHER APPLICATIONS [J].