Magnetic-field dependence of the specific heat of Ce2CuIn3

被引：3

作者：

Rojas, D. P. ^{[1
]}

Espeso, J. I. ^{[1
]}

Rodriguez Fernandez, J. ^{[1
]}

Gomez Sal, J. C. ^{[1
]}

机构：

[1] DCITIMAC, Santander 39005, Spain

来源：

PHYSICA B-CONDENSED MATTER | 2008年 / 403卷 / 5-9期

关键词：

spin-glass; specific heat; crystal field; magnetocaloric effect;

D O I：

10.1016/j.physb.2007.10.197

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report specific heat measurements, in magnetic fields up to 9 T, on the Ce2CuIn3 alloy, which exhibits spin-glass (SG) features below T-f = 2.1 K. At zero magnetic field, an anomaly associated to the SG transition appears around 1.3T(f). This anomaly broadens and shifts to higher temperatures when increasing the magnetic field. The magnetic entropy has the value of 0.3R ln 2 at T-f, and increases close to about R ln 6 at T = 300 K. The maximum value for the magnetocaloric effect is obtained at 4.4 K, where the isothermal magnetic entropy reaches a value of -Delta S-mag = 5 J/mol K at the maximum experimentally available field of 9 T. We compare our results to those reported for other SG systems. (C) 2007 Elsevier B.V. All rights reserved.

引用

页码：1609 / 1611

页数：3

共 6 条

[1] FALSE HEAVY FERMIONS [J].

GSCHNEIDNER, KA ;

TANG, J ;

DHAR, SK ;

GOLDMAN, A .

PHYSICA B, 1990, 163 (1-3) :507-510

[2] Cluster-glass transitions in CeNi1-xCux as studied by magnetocaloric effect [J].

Marcano, N ;

Espeso, JI ;

Sal, JCG ;

Prokleska, J ;

Vejpravova, J ;

Sechovsky, V .

PHYSICA B-CONDENSED MATTER, 2006, 378-80 :762-764

[3]

MYDOSH JA, 1993, SPIN GLASSES EXPT IN

[4] Transport and magnetic properties of Ce2NiIn3 [J].

Rojas, D. P. ;

Pereira, L. C. J. ;

Lopes, E. B. ;

Waerenborgh, J. C. ;

da Silva, L. M. ;

Gandra, F. G. ;

Medina, A. N. .

JOURNAL OF ALLOYS AND COMPOUNDS, 2007, 432 (1-2) :34-38

[5] Magnetic properties of Ce2CuIn3 [J].

Rojas, D. P. ;

Espeso, J. I. ;

Fernandez, J. Rodriguez ;

Gomez Sal, J. C. .

PHYSICA B-CONDENSED MATTER, 2006, 378-80 (SPEC. ISS.) :847-848

[6] Magnetocaloric effect induced by hydrogen absorption in CeNiIn [J].

Sanchez Marcos, J. ;

Rodriguez Fernandez, J. ;

Chevalier, B. ;

Bobet, J. -L. .

PHYSICA B-CONDENSED MATTER, 2006, 378-80 :799-800

← 1 →