LiMn2-xTixO4 spinel-type compounds (x ≤ 1):: Structural, electrical and magnetic properties

被引：29

作者：

Krins, N ^{[1
]}

Hatert, F

Traina, K

Dusoulier, L

Molenberg, I

Fagnard, JF

Vanderbemden, P

Rulmont, A

Cloots, R

Vertruyen, B

机构：

[1] Univ Liege, Chem Inst B6, SUPRATECS, LCIS, B-4000 Liege, Belgium

[2] Univ Liege, Lab Mineral, Geol Inst B18, B-4000 Liege, Belgium

[3] Univ Liege, Montefiore Inst B28, SUPRATECS, B-4000 Liege, Belgium

来源：

SOLID STATE IONICS | 2006年 / 177卷 / 11-12期

关键词：

Ti-doped LiMn2O4; crystal structure; magnetic properties; impedance spectroscopy; charge-discharge test;

D O I：

10.1016/j.ssi.2006.04.001

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

LiMn2-xTixO4 compounds with 0:5 x:! I were prepared by solid state reaction and Pechini technique. Powder X-ray diffraction showed that all samples crystallize with the spinel crystal structure (S.G. Fd3m). The cubic unit-cell parameter increases with the Ti content. The influence of the Ti content and cationic distribution on the magnetic properties of the compounds was studied by measuring the temperature and magnetic field dependences of the magnetization: substitution by non-magnetic d(0) Ti4+ ions appeared to weaken the magnetic interactions between the manganese ions. The electrical properties of LiMnTiO4 were studied by AC impedance spectroscopy and DC polarisation measurements, which revealed the electronic character of the conduction process. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：1033 / 1040

页数：8

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