Pressure Effect on Magnetic Properties of UGa3 |
| G.E. Grechneva, A. Delinb, O. Erikssonb, B. Johanssonb, A.S. Panfilova, I.V. Svechkareva and D. Kaczorowskic aB. Verkin Institute for Low Temperature Physics and Engineering, Lenin's pr. 47, Kharkov, 310164, Ukraine bCondensed Matter Theory Group, Department of Physics, Uppsala University, Box 530, 751 21 Uppsala, Sweden cW. Trzebiatowski Institute of Low Temperature and Structure Research, Polish Academy of Sciences, Okólna 2, 50-950 Wrocław, Poland |
| Full Text PDF |
| The magnetic susceptibility, χ, of the itinerant antiferromagnetic compound UGa3 was studied under pressure up to 2 kbar in the temperature range 64-300 K. The measured pressure derivative of the Néel temperature is found to be dTN/dP=-1.1 K/kbar. In order to analyze the experimental magnetovolume effect values, d lnχ/d lnV, the volume dependent electronic structure of UGa3 has been calculated ab initio in a paramagnetic phase by employing a relativistic full-potential linear muffin tin orbital method and including an external magnetic field self-consistently. The calculations revealed a predominance of itinerant uranium f-states at the Fermi energy, as well as a large orbital contribution to χ. |
| DOI: 10.12693/APhysPolA.92.331 PACS numbers: 75.10.Lp, 75.20.En |