J. Phys. Colloques
Volume 49, Numéro C8, Décembre 1988Proceedings of the International Conference on Magnetism
|Page(s)||C8-227 - C8-228|
J. Phys. Colloques 49 (1988) C8-227-C8-228
ON THE NATURE OF ANOMALOUS ELECTRONIC AND LATTICE PROPERTIES OF DILUTE Cr-BASED ALLOYSV. I. Anisimov1, V. P. Antropov1, M. I. Katsnelson1, A. I. Liechtenstein2, A. V. Trefilov3 et S. A. Turzhevsky2
1 Institute of Metal Physics, Ural Division of the USSR Academy of Sciences, Sverdlovsk, U.S.S.R.
2 Institute of Chemistry, Ural Division of USSR Academy of Sciences, Sverdlovsk, U.S.S.R.
3 I. V. Kurchatov Institute of Atomic Energy, Moskow, U.S.S.R.
An explanation is offered for the anomalies in lattice properties of chromium at the Néel transition, basing on an estimation of singularities in the polarization operator and, hence, in the phonon spectra at the transition. The electronic structure has been calculated by the LMTO-Green function method for V, Cr, Mn, Fe, Co, Ni and Si impurities in Cr. The possible origin of the increase of anomalies in Cr-based alloys in comparison with pure Cr is discussed.