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.
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收藏
页数：4
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