Grain size dependent thermal and electrical behaviour of La0.6Sr0.4Co0.2Fe0.8O3-δ

被引：4

作者：

Rout, Sarat K. ^{[1
]}

Patra, H. ^{[2
]}

Bhattacharyya, Santanu ^{[3
]}

Pratihar, Swadesh K. ^{[3
]}

机构：

[1] CV Raman Coll Engn, Dept Phys, Bhubaneswar, Orissa, India

[2] UCP Engn Sch, Dept Chem Engn, Berhampur, Ganjam, India

[3] Natl Inst Technol, Dept Ceram Engn, Rourkela, India

来源：

INTEGRATED FERROELECTRICS | 2017年 / 185卷 / 01期

关键词：

LSCF; SOFC cathode; grain size; four probe DC conductivity; SINTERING TEMPERATURE; MAGNETIC-PROPERTIES;

D O I：

10.1080/10584587.2017.1370289

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

La0.6Sr0.4Co0.2Fe0.8O3-delta has been synthesized by an advanced combustion technique with step wise modifications by various combustion additives. The quantitative values of the grain sizes obtained from a programmed software has been compared and confirmed by the SEM images. From the grain growth kinetics it was confirmed that sintering mechanism was initiated by volumediffusion. The thermal expansion behaviour and electricalDC conductivity studied as function of temperature have significant dependence on the grain size and the grain size distribution. The conductivity has been observed to be due to electronic contributions only and has been co related to the defect reactions.

引用

页码：52 / 60

页数：9

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