Influence of intermetallic Fe and Co on crystal structure disorder and magnetic property of Ni50Mn32Al18 Heusler alloy

作     者：H. A. Notonegoro B. Kurniawan J. Setiawan D. Nanto A. Manaf 

作者机构：PPS Materials Science FMIPA-Universitas Indonesia Depok 16424 Indonesia Mechanical Engineering Dept. FT-Universitas Sultan Ageng Tirtayasa Cilegon 42435 Indonesia Center for Nuclear Fuel Tecnology-Badan Tenaga Nuklir Nasional Tangerang Selatan 15310 Indonesia Dept. of Physics Education UIN Syarif Hidayatullah Jakarta 15412 Indonesia 

出 版 物：《Journal of Physics: Conference Series》 

年 卷 期：2016年第776卷第1期

学科分类：07[理学] 0702[理学-物理学] 

摘      要：This works reports a study on structure and magnetic properties influenced by both Fe and Co on Ni50Mn32Al18 Heusler alloy as a candidate of magnetocaloric effect (MCE) materials. The Ni-Fe-Mn-Co-Al sample was prepared by arc melting furnace (AMF) in high purity argon atmosphere. X-ray diffraction investigation and magnetic hysteresis were conducted to characterize the synthesized sample. X-ray diffraction using Cu-Kα pattern shows that both Fe and Co introduce a tungsten type disorder of Ni50Mn32Al18 Heusler alloy which partially replace the site position of Ni and Mn respectively. However, in this tungsten type disorder, it is difficult to distinguish the exact position of each constituent atom. Therefore, we believe it may allow any exchange interaction of each electron possessed the atom. Interestingly, it produced a significant increase in the value of the hysteresis magnetic saturation.