Magnetocaloric Effect in MnCo_(1-x)Al

材料科学技术（英文）, 2009, 25(6): 781-784.

^1, , ^2, , ^3, , ^4, , ^5, , ^6,

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

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

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

4.Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, Inner Mongolia Normal University, Huhhot 010022, China

5.Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, Inner Mongolia Normal University, Huhhot 010022, China

6.Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, Inner Mongolia Normal University, Huhhot 010022, China

基金项目: partly sup-ported by the Scientific Program of Inner Mongolia Nor-mal University, China(2007002) This work was financially supported by National Nat-ural Foundation of China(50661004)

Magnetocaloric Effect in MnCo_(1-x)Al_xGe Compounds

Weiguang Zhang ^1, , O. Tegus ^2, , Yongli Wu ^3, , Yirgeltu ^4, , Huanying Yan ^5, , Song Lin ^6,

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

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

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

4.Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, Inner Mongolia Normal University, Huhhot 010022, China

5.Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, Inner Mongolia Normal University, Huhhot 010022, China

6.Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, Inner Mongolia Normal University, Huhhot 010022, China

Keywords： Transition metal compounds

The effects of substitution of Al for Co on magnetic and magnetocaloric properties of MnCo_(1-x)Al_xGe (x=0.00, 0.03, 0.05, 0.08, 0.10, 0.13, 0.15, and 0.20) compounds have been investigated by X-ray diffraction (XRD) and magnetization measurements. XRD exhibits that MnCo_(1-x)Al_xGe compounds crystallize in the orthorhombic TiNiSi-type structure for x<0.03 and in the hexagonal Ni_2In-type crystal structure for x>0.03. Magnetic measurements show that the Curie temperature can be tuned between 286 and 347 K by changing the Co/Al ratio. The maximum magnetic entropy change determined from the isothermal magnetization measurement by Maxwell relation reaches 1.52 J/(kgK) for x=0.08 in a field change from 0 to 1.5 T around 310 K.

参考文献

[1]	V. K. Pecharsky;K. A. Gschneidner;Jr. .Tunable magnetic regenerator alloys with a giant magnetocaloric effect for magnetic refrigeration from ~20 to ~290 K[J].Applied physics letters,1997(21/24):3299-3301.
[2]	X. X. Zhang;G. H. Wen;F. W. Wang .Magnetic entropy change in Fe-based compound LaFe_(10.6)Si_(2.4)[J].Applied physics letters,2000(19):3072-3074.
[3]	H. Wada;Y. Tanabe .Giant magnetocaloric effect of MnAs_(1-x)Sb_(x)[J].Applied physics letters,2001(20):3302-3304.
[4]	Song Lin;O. Tegus;E. Bruck;W. Dagula;T. J. Gortenmulder;K. H. J. Buschow .Structural and Magnetic Properties of MnFe{sub}(1-x)Co{sub}xGe Compounds[J].IEEE Transactions on Magnetics,2006(11):3776-3778.

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

Magnetocaloric Effect in MnCo_(1-x)Al_xGe Compounds

参考文献