High-pressure energy dispersive X-ray diffraction investigation of lithium-manganese spinel

被引：4
|
作者：
Piszora, Pawel [1 ]
机构：
[1] Adam Mickiewicz Univ, Fac Chem, Lab Magnetochem, Grunwaldzka 6, PL-60780 Poznan, Poland
来源：
APPLIED CRYSTALLOGRAPHY XX | 2007年 / 130卷
关键词：
LiMn2O4; phase transition; high-pressure structure;
D O I：
10.4028/www.scientific.net/SSP.130.69
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The formation of the tetragonal high-pressure structure, attributed to the Jahn-Teller distortion, was proved. The c/a axial ratio shows an increasing trend towards a stronger tetragonal distortion at high pressure. Rietveld refinement after the pressure relaxation demonstrates the presence of tetragonal artefacts of the high-pressure structure only for the LiMn2O4 sample compressed in hexagonal boron nitride (h-BN), whereas the sample compressed in silicone reveals the pure cubic phase. Confrontation with the result of the first angle-dispersive diamond-anvil-cell experiment is presented.
引用
收藏
页码：69 / +
页数：2
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