Magnetic properties and magnetocaloric effect of (Mn1-xFex)(5)Sn-3 (x=0-0.5) compounds

作者：Xu J H; Liu X M^*; Xia Y H; Yang W Y; Du H L; Yang J B; Zhang Y; Yang Y C

来源：Journal of Applied Physics, 2013, 113(17): 17A921.

DOI：10.1063/1.4798308

The structural and magnetic properties of (Mn1-xFex)(5)Sn-3 compounds have been investigated by x-ray diffraction and magnetic measurements. All the samples crystallize in the hexagonal Ni2In-type structure (P6(3)/mmc) with the lattice parameters and cell volume decreasing almost linearly with the increase of Fe concentration. Besides the spin-glass state transition, the thermomagnetic curves show two other successive magnetic ordering transitions and their temperatures vary with x and show minima when x similar to 0.2. With increasing Fe content, the difference between the two magnetic ordering temperatures becomes larger gradually from similar to 12K (x = 0) to similar to 42K (x = 0.5) and the magnetization at 5K increases continuously. The -Delta S-M(T) dependence for x = 0.45 exhibits two peaks, leading to a wide temperature range for magnetic refrigeration and thus a considerable magnetic refrigerant capacity (120 J/kg, Delta H - 5T).

• 出版日期2013-5-7
• 单位北京大学; 郑州大学