Low-Temperature Physical Properties of Single-Crystalline EuCoGe₃ and EuRhGe₃

• Authors: O. Bednarchuk , D. Kaczorowski
• Languages of publication: EN

Abstracts

EN

Since a few years europium-based intermetallics have been attracting more and more attention due to their intriguing physical properties with anomalous behaviours in magnetically ordered states. Here, we report on the formation and the bulk physical properties of two tetragonal compounds EuCoGe₃ and EuRhGe₃, studied on high-quality single-crystalline specimens. In both materials, the Eu ions are in their divalent state, which gives rise to an antiferromagnetic ordering below T_{N} = 15.4 K and T_{N} = 11.3 K, respectively. In addition, EuCoGe₃ exhibits a successive antiferromagnetic phase transition at T₂ = 13.4 K. Based on some characteristic features in the temperature variations of the magnetic susceptibility, specific heat and electrical resistivity, we suggest that in both germanides an amplitude modulated magnetic structure develops below the respective T_{N}, with the Eu magnetic moments directed along the crystallographic [001] axis in EuCoGe₃ and perpendicular to this direction in EuRhGe₃.

Keywords

EN

75.50.Ee; 72.15.-v; 65.40.-b

Discipline

• 65.40.-b: Thermal properties of crystalline solids
• 72.15.-v: Electronic conduction in metals and alloys
• 75.50.Ee: Antiferromagnetics

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 2
• Pages: 418-420

Dates

published

2015-02

Contributors

author

O. Bednarchuk

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

author

D. Kaczorowski

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

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Identifiers

DOI

10.12693/APhysPolA.127.418