Estimation of magnetocaloric effect in multicomponent material Gd0.2Tb0.2Dy0.2Ho0.2Er0.2Ni2: Exploring high-entropy design

被引：7
作者：
Jesla, P. K. [1 ]
Chelvane, J. Arout [2 ]
Nirmala, R. [1 ]
机构：
[1] Indian Inst Technol Madras, Dept Phys, Chennai 600036, India
[2] Def Met Res Lab, Hyderabad 500058, India
来源：
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2024年 / 590卷
关键词：
Rare earth intermetallics and alloys; Magnetic properties; Magnetocaloric effect;
D O I：
10.1016/j.jmmm.2023.171651
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Polycrystalline rare earth intermetallic compound Gd0.2Tb0.2Dy0.2Ho0.2Er0.2Ni2 has been synthesized by arc melting and it has MgCu2-type cubic crystal structure at 300 K (space group Fd-3m). Magnetization measurement on arc-melted Gd0.2Tb0.2Dy0.2Ho0.2Er0.2Ni2 reveals a paramagnetic to ferromagnetic transition at-32 K (TC). The TC is close to the average value of the ferromagnetic transition temperatures of the end member GdNi2, TbNi2, DyNi2, HoNi2 and ErNi2 compounds. Using the field-dependent magnetization data measured around TC, isothermal magnetic entropy change (Delta Sm) has been estimated. A maximum value of Delta Smax m =-14.3 J kg- 1 K-1 is obtained at 27.5 K for 5 T field change. This value is significant when compared to that in the parent RNi2 (R = Gd, Tb, Dy, Ho and Er) compounds. The multicomponent compound Gd0.2Tb0.2Dy0.2Ho0.2Er0.2Ni2 has also been prepared by melt-spinning under inert atmosphere. The melt-spun sample shows granular microstructure with an average grain size of-1 mu m. It is found that the bulk magnetic properties are almost retained in the melt-spun sample and the magnetocaloric effect is nearly equal to that in arc-melted Gd0.2Tb0.2Dy0.2Ho0.2Er0.2Ni2. The relative cooling power is large and is about 568 J kg- 1 and 531 J kg- 1 for 5 T field change for the arc-melted and melt-spun Gd0.2Tb0.2Dy0.2Ho0.2Er0.2Ni2 samples respectively.
引用
收藏
页数：6
相关论文
共 27 条
[1]   ON A GENERALISED APPROACH TO 1ST AND 2ND ORDER MAGNETIC TRANSITIONS [J].
BANERJEE, SK .
PHYSICS LETTERS, 1964, 12 (01) :16-17
[2]   Persistent values of magnetocaloric effect in the multicomponent Laves phase compounds with varied composition [J].
Chzhan, V. B. ;
Tereshina, I. S. ;
Karpenkov, A. Yu. ;
Tereshina-Chitrova, E. A. .
ACTA MATERIALIA, 2018, 154 :303-310
[3]   Magnetocaloric prospects of mutual substitutions of rare-earth elements in pseudobinary Tb1-xHoxNi2 compositions (x=0.25-0.75) [J].
Cwik, J. ;
Koshkid'ko, Y. ;
Malecka, M. ;
Weise, B. ;
Krautz, M. ;
Mikhailova, A. ;
Kolchugina, N. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 886
[4]   Correlation between the structure and thermomagnetic properties of pseudo-binary (Tb,Er)Ni2 solid solutions [J].
Cwik, J. ;
Koshkid'ko, Y. ;
Nenkov, K. ;
Tereshina-Chitrova, E. ;
Kolchugina, N. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2021, 859
[5]   Thermal and magnetic effects in quasi-binary Tb1-xDyxNi2 (x=0.25, 0.5, 0.75) intermetallics [J].
Cwik, J. ;
Koshkid'ko, Y. ;
Kolchugina, N. ;
Nenkov, K. ;
de Oliveira, N. A. .
ACTA MATERIALIA, 2019, 173 :27-33
[6]   Structural, magnetic and magnetocaloric properties of HoNi2 and ErNi2 compounds ordered at low temperatures [J].
Cwik, J. ;
Koshkid'ko, Y. ;
Nenkov, K. ;
Tereshina, E. A. ;
Rogacki, K. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2018, 735 :1088-1095
[7]   Magnetocaloric effect in Laves-phase rare-earth compounds with the second-order magnetic phase transition: Estimation of the high-field properties [J].
Cwik, J. ;
Koshkid'ko, Y. ;
de Oliveira, N. A. ;
Nenkov, K. ;
Hackemer, A. ;
Dilmieva, E. ;
Kolchugina, N. ;
Nikitin, S. ;
Rogacki, K. .
ACTA MATERIALIA, 2017, 133 :230-239
[8]   Magnetic properties and magnetocaloric effect in Dy1-xScxNi2 solid solutions [J].
Cwik, J. ;
Palewski, T. ;
Nenkov, K. ;
Lyubina, J. ;
Gutfleisch, O. ;
Klamut, J. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2010, 506 (02) :626-630
[9]   Experimental and theoretical analysis of magnetocaloric behavior of Dy1-xErxNi2 intermetallics (x=0.25, 0.5, 0.75) and their composites for low-temperature refrigerators performing an Ericsson cycle [J].
Cwik, Jacek ;
Koshkid'ko, Yurii ;
Nenkov, Konstantin ;
Mikhailova, Alexandra ;
Malecka, Malgorzata ;
Romanova, Tetiana ;
Kolchugina, Natalia ;
de Oliveira, Nilson Antunes .
PHYSICAL REVIEW B, 2021, 103 (21)
[10]   Magnetocaloric effect: From materials research to refrigeration devices [J].
Franco, V. ;
Blazquez, J. S. ;
Ipus, J. J. ;
Law, J. Y. ;
Moreno-Ramirez, L. M. ;
Conde, A. .
PROGRESS IN MATERIALS SCIENCE, 2018, 93 :112-232
123