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Pressure Effect on Magnetic Properties of UGa_{3}

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Grechnev G., Delin A., Eriksson O., Johansson B., Panfilov A., Svechkarev I., Kaczorowski D.

Acta Physica Polonica A

1997

vol. 92

issue 2

331-333

The magnetic susceptibility, χ, of the itinerant antiferromagnetic compound UGa_{3} 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 dT_{N}/dP=-1.1 K/kbar. In order to analyze the experimental magnetovolume effect values, d lnχ/d lnV, the volume dependent electronic structure of UGa_{3} 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.

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1 Acta Physica Polonica A

1 1997

1 Delin A.

1 Eriksson O.

1 Grechnev G.

1 Johansson B.

1 Kaczorowski D.

1 Panfilov A.

1 Svechkarev I.

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Pressure Effect on Magnetic Properties of UGa_{3}