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
收藏
页码：253 / 259
页数：7
相关论文
共 50 条
12345