Magnetic-entropy change in Mn1.1Fe0.9P1-xGex compounds

被引：57

作者：

Dagula, W

Tegus, O

Fuquan, B

Zhang, L

Si, PZ

Zhang, M

Zhang, WS

Brück, E

de Boer, FR

Buschow, KHJ

机构：

[1] Univ Amsterdam, Waals Zeeman Inst, NL-1018 XE Amsterdam, Netherlands

[2] Inner Mongolia Normal Univ, Dept Phys, Hohhot 010022, Peoples R China

来源：

IEEE TRANSACTIONS ON MAGNETICS | 2005年 / 41卷 / 10期

关键词：

ferromagnetic materials; magnetic hysteresis; magnetic transitions;

D O I：

10.1109/TMAG.2005.854774

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The magnetic and magnetocaloric properties of Mn(1.1)Fe(0.9)p(1-x)Ge(x) compounds with x = 0.20, 0.22, 0.23, 0.26, and 0.30 have been investigated. In the composition range x from 0.20 to 0.30, the compounds crystallize in the Fe2P-type hexagonal structure. The Curie temperature of the compounds strongly increases with increasing Ge contents. A history dependence of the magnetic phase transition is observed in this compound system. The optimum composition range and the temperature range of the Mn1.1Fe0.9P1-xGex compounds for magnetic refrigeration applications have been determined. In the composition range x from 0.20 to 0.23, the compounds exhibit large magnetic-entropy change in a low magnetic field.

引用

页码：2778 / 2780

页数：3

共 6 条

[1] Magnetic refrigeration near room temperature with Fe2P-based compounds [J].