Comparison study of magnetic ordering for Fe-free and Fe-doped LiMn2O4 spinel oxide

被引：3
|
作者：
Li, Yang [1 ,2 ]
Ma, Boyu [2 ]
Wang, Aihua [3 ]
Chen, Ning [4 ]
Liu, Lihua [1 ]
Liu, Yang [4 ]
Wang, Weipeng [2 ]
Li, Xiaoxiang [2 ]
Cao, Guohui [2 ]
Ma, Xingqiao [2 ]
Lu, Jun [5 ]
机构：
[1] Univ Puerto Rico, Dept Engn Sci & Mat, Mayaguez, PR 00681 USA
[2] Univ Sci & Technol Beijing, Dept Phys, Beijing 100083, Peoples R China
[3] Capital Normal Univ, Dept Phys, Beijing 100037, Peoples R China
[4] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
[5] Florida State Univ, Natl High Magnet Field Lab, Tallahassee, FL 32310 USA
来源：
INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2010) | 2011年 / 273卷
基金：
美国国家科学基金会;
关键词：
TRANSITION; CATHODE;
D O I：
10.1088/1742-6596/273/1/012117
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
The structural and physical properties of LiMn2-xFexO4 (x = 0 to 0.5) were investigated. Contrasting LiMn2O4 with LiMn1.5Fe0.5O4, we observed a remarkable difference in the magnetic frustration. The LiMn2O4 sample has a magnetic ordering transition at 61 K while Fe-doped LiMn1.5Fe0.5O4 has an antiferromagnetic ordering transition with a Neel temperature at T-N = 34 K. Our result showed a larger value of the frustration index (f=vertical bar w vertical bar/T-C) for pure LiMn2O4 than for LiMn1.5Fe0.5O4. Fe-doping results in a decrease in the degree of frustration. Fe dopants occupying positions of Mn ion can break the original moment equilibrium so as to suppress the magnetic frustration in LiMn2O4.
引用
收藏
页数：4
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