Low-Temperature Specific Heat and Magnetocaloric Effect in RCu_2Ge_2 (R = Dy-Tm) Compounds

• Authors: Ł. Gondek , D. Kaczorowski , A. Pikul , A. Szytuła
• Languages of publication: EN

Abstracts

EN

The magnetocaloric effect in RCu_2Ge_2 (R = Dy-Tm) was investigated by means of specific heat measurements. The compounds order antiferromagnetically at 6.2 K (DyCu_2Ge_2), 5.6 K (HoCu_2Ge_2), 3.0 K (ErCu_2Ge_2), and 3.9 K (TmCu_2Ge_2), and some of them exhibit additional magnetic transitions in the ordered state. In an external magnetic field the low-temperature specific heat changes significantly, which can be attributed to metamagnetic-like transitions. In this temperature region, the investigated samples show distinctly different magnetocaloric effect.

Keywords

EN

75.30.-m; 75.30.Sg; 75.40.Cx

Discipline

• 75.30.Sg: Magnetocaloric effect, magnetic cooling(for cryogenics, see 07.20.Mc)
• 75.40.Cx: Static properties (order parameter, static susceptibility, heat capacities, critical exponents, etc.)
• 75.30.-m: Intrinsic properties of magnetically ordered materials(for critical point effects, see 75.40.-s; for magnetotransport phenomena, see 75.47.-m)

• Journal: Acta Physica Polonica A
• Year: 2012
• Volume: 122
• Issue: 2
• Pages: 391-393

Dates

published

2012-08

Contributors

author

Ł. Gondek

• Faculty of Physics and Applied Computer Science, AGH University of Science and Technology, al. A. Mickiewicza 30, 30-059 Kraków, Poland

author

D. Kaczorowski

• W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław, Poland

author

A. Pikul

• W. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław, Poland

author

A. Szytuła

• M. Smoluchowski Institute of Physics, Jagiellonian University, W.S. Reymonta 4, 30-059 Kraków, Poland

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Identifiers

DOI

10.12693/APhysPolA.122.391