Structural, electrical, and magnetic characterization of oxygen-deficient manganite La0.5Sr1.5Mn0.5Cr0.5O4-δ obtained by citrate precursor method

被引：0

作者：

Singh, Devinder ^{[1
]}

Sharma, Suman ^{[1
]}

Mahajan, Arun ^{[1
]}

Choudhary, Nisha ^{[1
]}

机构：

[1] Univ Jammu, Dept Chem, Jammu 180006, India

来源：

MONATSHEFTE FUR CHEMIE | 2014年 / 145卷 / 02期

关键词：

Citrate-gel method; Rietveld refinement; Double-exchange interaction; Mott's variable range hopping model; TRANSPORT-PROPERTIES; CR; CHARGE; MAGNETORESISTANCE; CRYSTAL; OXIDES; PHASE; LA1-XSR1+XMNO4; FERROMAGNETISM; K2NIF4;

D O I：

10.1007/s00706-013-1088-2

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The oxygen-deficient manganite La0.5Sr1.5Mn0.5Cr0.5O4-delta has been prepared by citrate gel route at 1,300 A degrees C. Rietveld profile analysis shows that the phase crystallizes with tetragonal unit cell in the space group I4/mmm with oxygen deficiency at the O(1) site. The magnetic studies suggest that the ferromagnetic interactions are dominant because of Mn3+-O-Mn4+ and Mn3+-O-Cr3+ double exchange interactions. On analyzing the electrical resistivity data, it has been concluded that Mott's variable range hopping model fits well.

引用

页码：253 / 259

页数：7