High-temperature structural phase transition in the LiCu2O2 multiferroic

被引：8

作者：

Kamentsev, K. E. ^{[1
]}

Bush, A. A. ^{[1
]}

Tishchenko, E. A. ^{[2
]}

Ivanov, S. A. ^{[3
,4
]}

Ottoson, M. ^{[5
]}

Mathieu, R. ^{[4
]}

Nordblad, P. ^{[4
]}

机构：

[1] Tech Univ, Moscow State Inst Radio Engn Elect & Automat, Moscow 119454, Russia

[2] Russian Acad Sci, Kapitza Inst Phys Problems, Moscow 119334, Russia

[3] LY Karpov Phys Chem Res Inst, Moscow 105064, Russia

[4] Uppsala Univ, Dept Engn Sci, SE-75121 Uppsala, Sweden

[5] Uppsala Univ, Dept Chem, SE-75121 Uppsala, Sweden

来源：

JOURNAL OF EXPERIMENTAL AND THEORETICAL PHYSICS | 2013年 / 117卷 / 02期

基金：

俄罗斯基础研究基金会;

关键词：

COMPOUND LICU2O2; COPPER; CRYSTALS; CHAINS;

D O I：

10.1134/S1063776113100026

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The results of thermogravimetric, X-ray diffraction, and electrical studies of LiCu2O2 single crystals in the temperature range 300-1100 K are presented. A reversible first-order phase transition between the orthorhombic and tetragonal phases is found to occur in these single crystals at T = 993 K. A pronounced peak on a differential thermal analysis curve and jumps in the unit cell parameters and the electrical resistivity are detected at the phase-transition temperature. The data on the crystal structure of LiCu2O2 and the phase transition-induced change in the entropy determined in this work are used to conclude that the revealed phase transition is caused by the ordering-disordering of Li+ and Cu2+ cations in their structural positions.

引用

页码：320 / 326

页数：7

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