等温过程
材料科学
化学计量学
杂质
磁矩
磁制冷
衍射
熔融纺丝
纺纱
磁化
分析化学(期刊)
结晶学
热力学
化学
凝聚态物理
磁场
物理化学
物理
复合材料
有机化学
光学
量子力学
色谱法
作者
Qiang Du,Guofu Chen,Wenyun Yang,Zhigang Song,Muxin Hua,Honglin Du,Changsheng Wang,Shunquan Liu,Jingquan Han,Yan Zhang,Jinbo Yang
标识
DOI:10.7567/jjap.54.053003
摘要
By suppressing the growth of impurities, a melt spinning method was successfully applied to the synthesis of typical layered CeMn2Si2 and AlFe2B2 compounds. X-ray diffraction analysis showed that CeMn2Si2 and AlFe2B2 had good purity and crystallized in ThCr2Si2- and AlFe2B2-type structures, respectively. The differences among three -type structures were also analyzed. The magnetic properties were investigated by magnetic measurements and electronic structure calculations. It was found that the Fe moment of AlFe2B2 reaches 1.32 μB at 5 K, which fits well with the calculated result of 1.44 μB at 0 K, and that the isothermal magnetic entropy change reaches 7.2 J kg−1 K−1 at 5 T, which shows great potential for room-temperature refrigeration applications.
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