Magnetocaloric effects in Fe4MnSi3Bx interstitial compounds

作者：Wu Yongli; Tegus O^*; Zhang Weiguang; Yiriyoltu S; Mend B; Songlin

来源：Acta Metallurgica Sinica (English Letters), 2009, 22(5): 397-400.

DOI：10.1016/S1006-7191(08)60114-3

• Transition metal interstitial compounds
• Magnetocaloric effect
• Magnetic properties

The magnetic properties and magnetocaloric effect in Fe4MnSi3Bx 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 P6(3)/mcm. Boron insertion in the host ternary suicide 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 Fe4MnSi3Bx 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.

• 出版日期2009-10
• 单位内蒙古师范大学