CALCULATION OF THE MAGNETIZATION AND MAGNETOCALORIC EFFECT IN THE MnFeP0.45AS0.55 COMPOUND

金属学报(英文版), 2007, 20(4): 265-269.

^1, , ^2, , ^3, , ^4, , ^5,

1.Key Laboratory of Physics and Chemistry of Function Materials,Inner Mongolia Normal University, Huhhot 010022, China

2.Key Laboratory of Physics and Chemistry of Function Materials,Inner Mongolia Normal University, Huhhot 010022, China

3.Key Laboratory of Physics and Chemistry of Function Materials,Inner Mongolia Normal University, Huhhot 010022, China

4.College of Science and Technology, Inner Mongolia University,Huhhot 010021, China

5.Key Laboratory of Physics and Chemistry of Function Materials,Inner Mongolia Normal University, Huhhot 010022, China;Van der Waals-Zeeman Instituut, Universiteit van Amsterdam,Valckenierstraat 65, 1018 XE Amsterdam, The Netherlands

基金项目: the Dutch Technology Foundation (STW) Part of the work was performed within the Scientific Exchange Program between the Netherlands and China the Scientific Program of the Advanced School of Inner Mongolia(NJ05101) 国家自然科学基金(50261003)

CALCULATION OF THE MAGNETIZATION AND MAGNETOCALORIC EFFECT IN THE MnFeP0.45AS0.55 COMPOUND

Keywords： bean-rodbell model

A magnetic state equation of the MnFeP0.45As0.55 compound has been obtained by minimizing the Gibbs free energy with respect to the volume and the magnetization based on the Bean-Rodbell model. The isothermal magnetization of the compound has been calculated using this equation. The magnetic entropy change of the compound was determined from the surface area between the two adjacent isothermal magnetization curves divided by the average temperature. A comparison and an error analysis of the calculated magnetic entropy change and the one determined from the experimental data were given.

参考文献

[1]	K A Jr Gschneidner;V K Pecharsky;A O Tsokol .[J].Reports on Progress in Physics,2005,68:1479.
[2]	O Tegus;E Brück;K H J Buschow;F.R.de Boer .[J].Nature,2002,415:150.
[3]	D S Rodbell .[J].Physical Review Letters,1961,7:1.
[4]	C P Bean;D S Rodbell .[J].Physical Review,1962,126:104.
[5]	P.J. von Ranke;N.A. de Oliveira;S. Gama .Understanding the influence of the first-order magnetic phase transition on the magnetocaloric effect: application to Gd_5(Si_xGe_(1-x))_4[J].Journal of Magnetism and Magnetic Materials,2004(1/2):78-83.
[6]	P J von Ranke;N A de Oliveira;S Gama .[J].Physics Letters A,2004,320:302.
[7]	O. Tegus;G. X. Lin;W. Dagula .A model description of the first-order phase transition in MnFeP_(1-x)As_x[J].Journal of Magnetism and Magnetic Materials,2005(1):658-660.
[8]	R W de Blois;D S Rodbell .[J].Physical Review,1963,130:1347.

上一张下一张

计量

下载量()
访问量()

作者相关

在本站搜索
在百度学术搜索
在万方数据库搜索
在CNKI搜索

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网

CALCULATION OF THE MAGNETIZATION AND MAGNETOCALORIC EFFECT IN THE MnFeP0.45AS0.55 COMPOUND

参考文献