Structural, magnetic and magnetocaloric properties in RE2Ni1.5Ga2.5 (RE = Dy, Ho, Er and Tm) compounds

被引：25
作者：
Guo, Dan [1 ]
Zhang, Yikun [1 ]
Wu, Bingbing [1 ]
Wang, Haifeng [2 ]
Guan, Renguo [2 ]
Li, Xi [1 ]
Ren, Zhongming [1 ]
机构：
[1] Shanghai Univ, State Key Lab Adv Special Steels, Shanghai Key Lab Adv Ferromet, Sch Mat Sci & Engn, Shanghai 200072, Peoples R China
[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Ctr Adv Lubricat & Seal Mat, Xian 710072, Shaanxi, Peoples R China
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2020年 / 830卷
基金：
中国国家自然科学基金; 上海市自然科学基金;
关键词：
Crystal structure; RE2Ni1.5Ga2.5; Magnetocaloric effect (MCE); Magnetic refrigeration (MR); PHASE-TRANSITION; TRANSFORMATION; ALLOYS; HOGA2;
D O I：
10.1016/j.jallcom.2020.154666
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The crystal structure together with the magnetic and magnetocaloric properties in RE2Ni1.5Ga2.5 (RE = Dy, Ho, Er and Tm) have been investigated systematically. All the RE2Ni1.5Ga2.5 compounds crystallize in a Caln 2 -type structure of (P63/mmc space group). A second-ordered magnetic phase transition (SOPT) from ferromagnetic to paramagnetic (FM to PM) is occurred in RE(2)Ni(1.5)Ga(2.5)compounds with the Curie temperatures (T-c) of approximately 16.1,10.6, 4.1 and below 2 K for RE of Dy, Ho, Er and Tm, respectively. The magnetocaloric parameters including magnetic isothermal entropy change/temperature-averaged magnetic entropy change -Delta(SMTEC)-T-max (5) and relative cooling power RCP are calculated with the values of 10.01/9.92 J/kg K and 418.6 J/kg for Dy2Ni1. 5Ga2.5, 20.12/19.65 J/kg K and 644.1 J/kg for Ho2Ni1.5Ga2.5 18.07/17.69 J/kg K and 447.1 J/kg for Er2Ni1.5Ga2.(5), as well as 18.22/16.75 J/kg K and 330.7 J/kg for Tm2Ni1.5Ga2.(5) with magnetic field change (Delta H) of 0-7 T, respectively. Notably, Ho2Ni1.5Ga2.5 exhibits ralatively high magnetocaloric parameters, which suggests that Ho2Ni1.5Ga2.5 is a competitive candidate among the MCE materials in the field of cryogenic magnetic refrigeration (MR). (C) 2020 Elsevier B.V. All rights reserved.
引用
收藏
页数：8
相关论文
共 57 条
[1]   ON A GENERALISED APPROACH TO 1ST AND 2ND ORDER MAGNETIC TRANSITIONS [J].
BANERJEE, SK .
PHYSICS LETTERS, 1964, 12 (01) :16-17
[2]   Spin glass behaviour observed in the RGa1.7Ni0.3 (R=Gd-Ho) and RGa1.5Cu0.5 (R=Gd, Tb) phases [J].
Baran, S ;
Leciejewicz, J ;
Slaski, M ;
Szytula, A ;
Penc, B ;
Ding, Y ;
Stusser, N .
JOURNAL OF ALLOYS AND COMPOUNDS, 1997, 256 (1-2) :L18-L21
[3]   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
[4]   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
[5]   Magnetic properties and magnetocaloric effect of the HoAgGa compound [J].
da Silva, L. M. ;
dos Santos, A. O. ;
Coelho, A. A. ;
Cardoso, L. P. .
APPLIED PHYSICS LETTERS, 2013, 103 (16)
[6]   Ambient pressure colossal magnetocaloric effect tuned by composition in Mn1-xFexAs [J].
De Campos, Ariana ;
Rocco, Daniel L. ;
Carvalho, Alexandre Magnus G. ;
Caron, Luana ;
Coelho, Adelino A. ;
Gama, Sergio ;
Da Silva, Luzeli M. ;
Gandra, Flavio C. G. ;
Dos Santos, Adenilson O. ;
Cardoso, Lisandro P. ;
Von Ranke, Pedro J. ;
De Oliveira, Nilson A. .
NATURE MATERIALS, 2006, 5 (10) :802-804
[7]   Structural disorder effects on the magnetic entropy change of DyCo2 intermetallic: Mechanical milling and the weakening of the itinerant electron metamagnetism mechanism [J].
de Paula, V. G. ;
Gomes Silva, M. ;
da Silva, L. M. ;
dos Santos, A. O. ;
Lang, R. ;
Otubo, L. ;
Coelho, A. A. ;
Cardoso, L. P. .
INTERMETALLICS, 2018, 94 :1-9
[8]   Anisotropic magnetocaloric effect in ErGa2 and HoGa2 single-crystals [J].
dos Reis, R. D. ;
da Silva, L. M. ;
dos Santos, A. O. ;
Medina, A. M. N. ;
Cardoso, L. P. ;
Gandra, F. C. G. .
JOURNAL OF ALLOYS AND COMPOUNDS, 2014, 582 :461-465
[9]   Study of the magnetocaloric properties of the antiferromagnetic compounds RGa2 (R = Ce, Pr, Nd, Dy, Ho and Er) [J].
dos Reis, R. D. ;
da Silva, L. M. ;
dos Santos, A. O. ;
Medina, A. M. N. ;
Cardoso, L. P. ;
Gandra, F. G. .
JOURNAL OF PHYSICS-CONDENSED MATTER, 2010, 22 (48)
[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
123456