The influence of high pressure on the crystal and magnetic structures of the La0.7Sr0.3CoO3 cobaltite

被引：20

作者：

Golosova, NO

Kozlenko, DP

Voronin, VI

Glazkov, VP

Savenko, BN

机构：

[1] Joint Inst Nucl Res, Dubna 141980, Moscow Oblast, Russia

[2] Russian Acad Sci, Inst Met Phys, Ural Div, Ekaterinburg 620219, Russia

[3] Russian Res Ctr Kurchatov Inst, Moscow 123182, Russia

来源：

PHYSICS OF THE SOLID STATE | 2006年 / 48卷 / 01期

基金：

俄罗斯基础研究基金会;

关键词：

D O I：

10.1134/S1063783406010197

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The atomic and magnetic structures of the La0.7Sr0.3CoO3 cobaltite are investigated using neutron diffraction at high pressures up to 4.2 GPa in the temperature range 16-300 K. The structural parameters are determined as functions of the pressure. It is revealed that the effect of high pressure leads to a decrease in the Curie temperature: dT(C)/dP = -8.3(8) K/GPa. It is established that, under high pressure, the decrease in the Curie temperature T (C) is associated with the transition of a number of Co3+ ions from the intermediate-spin state (t(2g)(5)e(g)(1), S = 1) to the low-spin state (t(2g)(6) , S = 0).

引用

页码：96 / 101

页数：6

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