Structure and Magnetocaloric Effect of B-Doped Mn-Fe-P-Si Compounds

Abstract:

We reported the structural, magnetic and magenetocaloric properties of Mn_1.25Fe_0.75P_{0. 50}Si_0.50B_x (x = 0.01, 0.02 and 0.04) X-ray diffraction patterns show that all compounds crystallize in the hexagonal Fe₂P-type crystal structure. Lattice parameter a increases while c decreases with increasing B contents. The Curie temperature of the compounds have been determined, the values are 219, 268 and 323.2 K for x = 0.01, 0.02, 0.04, respectively. The maximum magnetic entropy changes in a field change of 0~1.5 T are 6.1, 5.3 and 3.5J/kg·K for x = 0.01, 0.02 and 0.04, respectively.

• Periodical: Solid State Phenomena (Volume 323)
• Pages: 152-158
• DOI: https://doi.org/10.4028/www.scientific.net/SSP.323.152
• Online since: August 2021
• Authors: Shou Yuan Xing, Song Lin, Zhi Qiang Song, Zhi Qiang Ou*
• Keywords: Curie Temperature, Magnetic Entropy Change, Magneto-Caloric Effect, Phase Transition

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