Thermodynamics of the ferromagnetic phase transition in nearly half metallic CoS2 at high pressures

被引：8

作者：

Elkin, F. S. ^{[1
]}

Zibrov, I. P. ^{[1
]}

Novikov, A. P. ^{[1
]}

Khasanov, S. S. ^{[2
]}

Sidorov, V. A. ^{[1
]}

Petrova, A. E. ^{[1
]}

Lograsso, T. A. ^{[3
]}

Thompson, J. D. ^{[4
]}

Stishov, S. M. ^{[1
]}

机构：

[1] Russian Acad Sci, Inst High Pressure Phys Russian, Troitsk, Russia

[2] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow Region, Russia

[3] Iowa State Univ, Ames Lab, Ames, IA 50011 USA

[4] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

来源：

SOLID STATE COMMUNICATIONS | 2014年 / 181卷

基金：

俄罗斯基础研究基金会;

关键词：

Half-metal; Phase transition; X-ray; Specific heat; ELECTRICAL-RESISTIVITY; PYRITE STRUCTURE;

D O I：

10.1016/j.ssc.2013.12.001

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The volume change and heat capacity at the ferromagnetic phase transition in COS2 were measured at high pressures using X-rays generated by the Argonne synchrotron light source and by ac-calorimetry, respectively. The transition entropy, calculated on the basis of these experimental data, drops along the transition line due to quantum degradation, as required by Nernst's law. The volume change increases strongly along the transition line, which is explained by specifics of the compressibility difference of coexisting phases that results from nearly half metallic nature of the ferromagnetic phase of COS2. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：41 / 45

页数：5

共 25 条

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