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| MAGNETOCALORIC EFFECT IN MnFeP0.63Ge0.12Si0.25Bx (x=0, 0.01, 0.02, 0.03) COMPOUNDS |
| WANG Dongmei, SONG Lin, WANG Yaohui, ZHANG Wei, Bilige, Tegus O |
Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, Inner Mongolia Normal University,
Hohhot 010022 |
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Cite this article:
WANG Dongmei SONG Lin WANG Yaohui ZHANG Wei Bilige Tegus O. MAGNETOCALORIC EFFECT IN MnFeP0.63Ge0.12Si0.25Bx (x=0, 0.01, 0.02, 0.03) COMPOUNDS. Acta Metall Sin, 2011, 47(3): 344-348.
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Abstract Structural and magnetocaloric properties of the MnFeP0.63Ge0.12Si0.25Bx (x=0,0.01, 0.02, 0.03, atomic fraction) compounds have been inestigated. XRD result shows that the MnFeP0.63Ge0.12Si0.25Bx (x=0, 0.01, 0.02, 0.03) compounds mainly consist of the Fe2P–typhxagonal structure phase with space group P¯62m. It is fond that the lattice paraeter a increases and the lattice parameter c slighly decreases with increasing x, and the unit celvolume does not change. The agnetic measurements show that the Curie temperature increases from 300 K to 347 K, and thermal hysteresis are 20, 17, 11 and 6 K for x= 0 to 0.03. The aximm values of the magnetic entropy chage are 11.1, 11.26 and 11.8 J/(kg·K), respectively, or 0—1.5 T fields.
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Received: 25 October 2010
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| Fund: Supported by National Natural Science Foundation of China (No.50961010), National Natural Science Foundation of Inner Mongolia (No.20080404ZD09) and Graduate Student Foundation of Inner Mongolia Normal University (No.CXJJS10034) |
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