Thermomagnetic power generation performance of first-order phase transition material Mn1.2Fe0.8P0.4Si0.6

被引：3
|
作者：
Bi Li-Ge [1 ]
Tegus, O. [1 ]
Riletu, Yi [1 ]
Shi Hai-Rong [1 ]
机构：
[1] Inner Mongolia Normal Univ, Inner Mongolia Key Lab Phys & Chem Funct Mat, Hohhot 010022, Peoples R China
来源：
ACTA PHYSICA SINICA | 2012年 / 61卷 / 07期
基金：
中国国家自然科学基金;
关键词：
transition-metal compounds; first-order phase transition; thermomagnetic power generation;
D O I：
10.7498/aps.61.077103
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
In this paper, we report on the magnetism and the thermomagnetic power generation performance of a first-order phase transition material Mn1.2Fe0.8P0.4Si0.6,which can be used for thermomagnetic power generation that turns heat directly into electricity. The compound is synthesized by using the high-energy ball milling and solid state reaction method. Magnetic measurements show that the compound undergoes a ferromagnetic-to-paramagnetic first-order phase transition at 337 K, accompanied by a giant magnetization change. According to this feature of the material, we design a demonstration device for thermomagnetic power generation, and study the electric current generated by heat induced phase transition. The current increases with the increase of the heat-flow temperature and the mass of material. This study shows that the Mn1.2Fe0.8P0.4Si0.6 compound possesses the high performance of thermomagnetic power generation.
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页数：4
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