Anisotropy of Magnetic and Transport Properties οf UAuSb_2 Single Crystals

• Authors: R. Troć , Z. Bukowski , J. Stępień-Damm , C. Sułkowski
• Languages of publication: EN

Abstracts

EN

The uranium-gold diantimonide UAuSb_2 belongs to a numerous family of ternary compounds crystallizing in a tetragonal structure of the HfCuSi_2-type (space group P4/nmm). In this paper the results of magnetization, electrical resistivity and thermopower measured along the main crystallographic directions are reported. Two magnetic transitions, a ferromagnetic one at T_C =31 K and probably an antiferromagnetic one at T_N = 43 K were found. The spontaneous magnetization at 1.9 K amounts about 0.8 μ_B for B ⃦c-axis. Electrical resistivity for j⊥ c-axis exhibits a T^2 exp(-Δ/kT) dependence at low temperatures and a Kondo effect at higher temperatures above T_N. The thermopower S for both main crystallographic directions shows a maximum at the temperature close to T_C and the lack of any anomaly at T_N.

Keywords

EN

71.20.Lp; 71.27.+a; 75.30.Gw

Discipline

• 75.30.Gw: Magnetic anisotropy
• 71.20.Lp: Intermetallic compounds
• 71.27.+a: Strongly correlated electron systems; heavy fermions

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2009
• Volume: 115
• Issue: 1
• Pages: 181-184

Dates

published

2009-01

Contributors

author

R. Troć

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland

author

Z. Bukowski

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland

author

J. Stępień-Damm

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland

author

C. Sułkowski

• Institute of Low Temperature and Structure Research, Polish Academy of Sciences, P.O. Box 1410, 50-950 Wrocław 2, Poland

References

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• 7. Z. Bukowski, R. Troć, J. Stępień-Damm, C. Sułkowski, V.H. Tran, J. Alloys Comp. 403, 65 (2005)

Identifiers

DOI

10.12693/APhysPolA.115.181