Magnetocaloric effect in DyCu2

被引：29

作者：

Arora, Parul ^{[1
]}

Tiwari, Pragya ^{[2
]}

Sathe, V. G. ^{[3
]}

Chattopadhyay, M. K. ^{[1
]}

机构：

[1] Raja Ramanna Ctr Adv Technol, Magnet & Superconducting Mat Sect, Indore 452013, India

[2] Raja Ramanna Ctr Adv Technol, Indus Synchrotrons Utilizat Div, Indore 452013, India

[3] UGC DAE Consortium Sci Res, Indore 452017, Madhya Pradesh, India

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2009年 / 321卷 / 19期

关键词：

Rare-earth intermetallics; Magnetocaloric effect; Magnetization; MAGNETIC-PROPERTIES; RARE-EARTH; ISING-AXIS; HEAT; METAMAGNETISM; REFRIGERATOR; CONVERSION;

D O I：

10.1016/j.jmmm.2009.05.062

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The magneto caloric effect of the rare-earth intermetallic compound DyCu2 is explored through magnetization measurements. DyCu2 is paramagnetic at the room temperature but becomes antiferromagnetic below 27 K (Neel temperature). Strong temperature and field dependence of magnetization in DyCu2 at and around the Neel temperature lead to a large magnetocaloric effect. An appreciable magnetocaloric effect persists well above the Neel temperature probably because of the presence of short-range ferromagnetic correlations in the paramagnetic state of DyCu2. This along with the absence of magnetic hysteresis lead to a large effective refrigerant capacity of 194 J/kg below 44 K, which makes the material important as a potential magnetic refrigerant for the cryogenic liquefier cycles. (C) 2009 Elsevier B.V. All rights reserved.

引用

页码：3278 / 3284

页数：7

共 35 条

[1]

ASHCROFT NW, 2001, SOLID STATE PHYS, P702

[2]

BLUNDELL S, 2006, MAGENTISM CONDENSED

[3] Specific heat of DyCu2 single crystals in high magnetic fields [J].

Dörr, M ;

Loewenhaupt, M ;

Hahn, W ;

Brück, E ;

Hagmusa, IH ;

Klaasse, JCP ;

Rotter, M .

PHYSICA B, 1999, 262 (3-4) :340-347

[4] Recent developments in magnetic refrigeration [J].

Gschneidner, KA ;

Pecharsky, VK ;

Pecharsky, AO ;

Zimm, CB .

RARE EARTHS '98, 1999, 315-3 :69-76

[5] Recent developments in magnetocaloric materials [J].

Gschneidner, KA ;

Pecharsky, VK ;

Tsokol, AO .

REPORTS ON PROGRESS IN PHYSICS, 2005, 68 (06) :1479-1539

[6] INFLUENCE OF THE MAGNETIC-ANISOTROPY ON THE RELAXATION BEHAVIOR IN DYCU2 AND ERCU2 [J].

GUBBENS, PCM ;

BUSCHOW, KHJ ;

DIVIS, M ;

LANGE, J ;

LOEWENHAUPT, M .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1991, 98 (1-2) :141-146

[7] CONVERSION OF THE ISING AXIS IN DYCU2 UNDER HIGH MAGNETIC-FIELD [J].

HASHIMOTO, Y ;

KINDO, K ;

TAKEUCHI, T ;

SENDA, K ;

DATE, M ;

YAMAGISHI, A .

PHYSICAL REVIEW LETTERS, 1994, 72 (12) :1922-1924

[8] MAGNETIC-PROPERTIES OF TBCU2 AND DYCU2 SINGLE-CRYSTALS [J].

HASHIMOTO, Y ;

FUJII, H ;

OKAMOTO, T .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1976, 40 (05) :1519-1520

[9] MAGNETIC-PROPERTIES OF RARE-EARTH COPPER INTERMETALLIC COMPOUNDS, RCU2 .1. HEAVY RARE-EARTH [J].

HASHIMOTO, Y ;

FUJII, H ;

FUJIWARA, H ;

OKAMOTO, T .

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 1979, 47 (01) :67-72

[10] 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)

← 1 2 3 4 →