Magnetocaloric effects in Fe4 MnSi3Bx interstitial compounds

Yongli WU; O.Tegus; Weiguang ZHANG; S.Yiriyoltu; B. Mend Songlin

doi:10.1016/S1006-7191(08)60114-3

Acta Metallurgica Sinica (English Letters) >

2009 , Vol. 22 >Issue 5: 397 - 400

DOI: https://doi.org/10.1016/S1006-7191(08)60114-3

Research paper

Magnetocaloric effects in Fe₄MnSi₃B_x interstitial compounds

Yongli WU ,
O.Tegus ,
Weiguang ZHANG ,
S.Yiriyoltu ,
B. Mend Songlin

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1. Inner Mongolia Key Laboratory for Physics and Chemistry of Functional Materials, Inner Mongolia Normal University, Huhhot 010022, China
2. Van der Waals-Zeeman Instituut, Universiteit van Amsterdam, Valckenierstraat 65, 1018 XE, Amsterdam, The Netherlands

Received date: 2008-12-11

Revised date: 2009-03-02

Online published: 2009-10-15

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Abstract

The magnetic properties and magnetocaloric effect in Fe₄MnSi₃B_x compounds with x=0, 0.05, 0.10, 0.15, 0.20, 0.25 have been investigated. X-ray diffraction study shows that all these compounds investigated crystallize in the Mn₅Si₃-type structure with space group P6₃/mcm. Boron insertion in the host ternary silicide Fe₄MnSi₃ does not change the crystal symmetry, only leads to an increase of the lattice parameters, indicating the B atoms entered the interstitial sites. With increasing B content, the Curie temperature shifts to higher temperatures. The maximal magnetic-entropy changes of the Fe₄MnSi₃B_x compounds with x=0, 0.10 and 0.20 are about 1.8 J/(kg·K), 1.8~J/(kg·K) and 1.6~J/(kg·K), respectively, for a field change from 0 to 1.5 T.

Key words： Transition metal interstitial compounds; Magnetocaloric effect; Magnetic properties

Cite this article

Yongli WU , O.Tegus , Weiguang ZHANG , S.Yiriyoltu , B. Mend Songlin . Magnetocaloric effects in Fe₄MnSi₃B_x interstitial compounds[J]. Acta Metallurgica Sinica (English Letters), 2009 , 22(5) : 397 -400 . DOI: 10.1016/S1006-7191(08)60114-3

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