关键词: 磁制冷材料/
磁热效应/
磁熵变/
磁性
English Abstract
Research progress in magnetocaloric effect materials
Zheng Xin-Qi1,Shen Jun2,
Hu Feng-Xia3,
Sun Ji-Rong3,
Shen Bao-Gen3
1.School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China;
2.Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, China;
3.Institute of Physics, Chinese Academy of Sciences, University of Chinese Academy of Sciences, Beijing 100190, China
Fund Project:Project supported by the National Natural Science Foundation of China(Grant Nos. 51322605, 51501005, 11274357, 51271192, 51531008, 51271196), the Fundamental Research Funds for the Central Universities, China(Grant No. FRF-TP-15-010A1), and the China Postdoctoral Science Foundation Funded Project(Grant No. 2016M591071).Received Date:22 July 2016
Accepted Date:02 August 2016
Published Online:05 November 2016
Abstract:Magnetocaloric effect（MCE) is the intrinsic property of a magnetic material near transition temperature and the magnetic refrigeration based on MCE has been demonstrated as a promising alternative to the conventional gas compression or expansion refrigeration due to its high energy efficiency and environmental friendliness. The development of magnetic refrigeration technology depends on the research progress of magnetic refrigerant materials with large MCEs. Lots of researches of material exploration and material optimization have promoted the progress of magnetic refrigeration technology in recent decades. In this paper, we introduce the basic theory of MCE and the development of refrigeration technology, review the research progress of large MCE materials both in low temperature range and in room temperature range, and specifically focus on the latest progress of some MCE materials. Low temperature MCE materials mainly include those rare earth based materials with low transition temperatures, such as binary alloys（RGa, RNi, RZn, RSi, R3Co and R12Co7), ternary alloys（RTSi, RTAl, RT2Si2, RCo2B2 and RCo3B2), and quaternary alloys（RT2B2C), where R denotes the rare earth and T represents the transition metal. Those materials mainly possess the second-order phase transitions and show good thermal hysteresis, magnetic hysteresis, and thermal conductivities. Room temperature MCE materials are mainly Gd-Si-Ge intermetallic compounds, La-Fe-Si intermetallic compounds, MnAs-based compounds, Mn-based Heusler alloys, Mn-based antiperovskite compounds, Mn-Co-Ge intermetallic compounds, Fe-Rh compounds, and perovskite-type oxides. The above materials usually have the first-order phase transitions and most of these materials possess the large MCEs in room temperature range, therefore they have received much attention home and abroad. Among those room temperature MCE materials, the La-Fe-Si series is considered to be the most promising magnetic refrigerant materials universally and our country has independent intellectual property rights of them. The further development prospects of MCE materials are also discussed at the end of this paper.
Keywords: magnetic refrigerant materials/
magnetocaloric effect/
magnetic entropy change/
magnetic properties
