Magnetic properties and magnetocaloric effect in TmGa and HoGa single crystals

被引：16

作者：

Gao, Tian ^{[1
,2
]}

Nishimura, Katsuhiko ^{[2
]}

Matsumoto, Takashi ^{[2
]}

Namiki, Takahiro ^{[2
]}

Isikawa, Yosikazu ^{[2
]}

机构：

[1] Shanghai Univ Elect Power, Dept Phys, Shanghai 201300, Peoples R China

[2] Toyama Univ, Grad Sch Sci & Engn, Toyama 9308555, Japan

来源：

SOLID STATE COMMUNICATIONS | 2013年 / 158卷

关键词：

TmGa; HoGa; Single Crystal; Magnetocaloric effect; INTERMETALLIC COMPOUNDS; TRANSITIONS;

D O I：

10.1016/j.ssc.2012.12.028

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We studied the magnetic property, heat capacity, and magnetocaloric effect of TmGa and HoGa single crystals. The observed magnetizations at three principal crystallographic axes display clear magnetic anisotropy, indicating an easy magnetic direction at the a-axis for TmGa and c-axis for HoGa. The measured specific heat of TmGa revealed the Curie temperature of 15 K and spin-reorientation temperatures at about 12.5 and 3.0 K respectively. Both samples exhibit giant reversible anisotropic magnetocaloric effect based on a second-order phase transition. Along the easy axis, the maximum value of magnetic entropy change for a magnetic field change of 0-5 T reaches 26.1 J kg(-1) K-1 at 15 K and 14.9 J kg(-1) K-1 at 65 K for TmGa and HoGa, respectively. The corresponding relative cooling powers are achieved to be 468 and 924 J kg(-1). These values suggest the possibility of using these materials in magnetic refrigeration applications. (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：1 / 4

页数：4

共 16 条

[1] ON A GENERALISED APPROACH TO 1ST AND 2ND ORDER MAGNETIC TRANSITIONS [J].

BANERJEE, SK .

PHYSICS LETTERS, 1964, 12 (01) :16-17

[2] Table-like magnetocaloric effect and enhanced refrigerant capacity in Eu8Ga16Ge30-EuO composite materials [J].

Chaturvedi, Anurag ;

Stefanoski, Stevce ;

Phan, Manh-Huong ;

Nolas, George S. ;

Srikanth, Hariharan .

APPLIED PHYSICS LETTERS, 2011, 99 (16)

[3] Giant reversible magnetocaloric effect in metamagnetic HoCuSi compound [J].

Chen, J. ;

Shen, B. G. ;

Dong, Q. Y. ;

Hu, F. X. ;

Sun, J. R. .

APPLIED PHYSICS LETTERS, 2010, 96 (15)

[4] Giant magnetocaloric effect in HoGa compound over a large temperature span [J].

Chen, J. ;

Shen, B. G. ;

Dong, Q. Y. ;

Sun, J. R. .

SOLID STATE COMMUNICATIONS, 2010, 150 (3-4) :157-159

[5] Large reversible magnetocaloric effect caused by two successive magnetic transitions in ErGa compound [J].

Chen, J. ;

Shen, B. G. ;

Dong, Q. Y. ;

Hu, F. X. ;

Sun, J. R. .

APPLIED PHYSICS LETTERS, 2009, 95 (13)

[6] The magnetic spin-reorientation transitions in the RGa (R = rare earth) intermetallic compounds studied by measurements of the hyperfine interactions of the 119Sn probe atoms [J].

Delyagin, N. N. ;

Krylov, V. I. ;

Rozantsev, I. N. .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 2007, 308 (01) :74-79

[7] Magnetic properties and magnetocaloric effects in R3Ni2 (R = Ho and Er) compounds [J].

Dong, Q. Y. ;

Chen, J. ;

Shen, J. ;

Sun, J. R. ;

Shen, B. G. .

APPLIED PHYSICS LETTERS, 2011, 99 (13)

[8] Giant magnetocaloric effect in the Ising antiferromagnet DySb [J].

Hu, W. J. ;

Du, J. ;

Li, B. ;

Zhang, Q. ;

Zhang, Z. D. .

APPLIED PHYSICS LETTERS, 2008, 92 (19)

[9] Giant reversible anisotropic magnetocaloric effect in an antiferromagnetic EuFe2As2 single crystal [J].

Kim, M. S. ;

Sung, N. H. ;

Son, Yoonkook ;

Ko, M. S. ;

Cho, B. K. .

APPLIED PHYSICS LETTERS, 2011, 98 (17)

[10] CALORIMETRIC STUDY OF SEVERAL RARE-EARTH GALLIUM GARNETS [J].

ONN, DG ;

MEYER, H ;

REMEIKA, JP .

PHYSICAL REVIEW, 1967, 156 (02) :663-&

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