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

Bi Li-Ge O. Tegus Yi Riletu Shi Hai-Rong

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

Bi Li-Ge, O. Tegus, Yi Riletu, Shi Hai-Rong
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Publishing process
  • Received Date:  24 June 2011
  • Accepted Date:  05 April 2012
  • Published Online:  05 April 2012

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

  • 1. Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, Inner Mongolia Normal University, Hohhot 010022, China
Fund Project:  Project supported by the Inner Mongolia Province Natural Science Foundation (Grant No. 20080404ZD01), and the National Natural Science Foundation of China (Grant No. 50961010).

Abstract: 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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