Low Temperature Physics: 42, 458 (2016); https://doi.org/10.1063/1.4954784
Fizika Nizkikh Temperatur: Volume 42, Number 6 (June 2016), p. 586-595    ( to contents , go back )

Electronic structure and magnetic properties of RT4Al8 (R = Sc, Y, La, Lu; T = Fe, Mn, Cr) compounds. Hydrostatic pressure effect

I.P. Zhuravleva1, G.E. Grechnev1, A.S. Panfilov1, A.А. Lyogenkaya1, O.V. Kotlyar1, А.V. Fedorchenko1, 2, and A. Feher2

1B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Prospekt Nauky, Kharkiv 61103, Ukraine
E-mail: panfilov@ilt.kharkov.ua

2Institute of Physics, Faculty of Science, P.J. Šafárik University in Košice, Košice 04154, Slovakia

Received February 25, 2016

Abstract

We present results of theoretical and experimental studies of the electronic structures and magnetic properties of RFe4Al8, RMn4Al8 and RCr4Al8 compounds with non-magnetic elements, R = Sc, Y, La, Lu. The calculations of electronic spectra and field induced magnetic moments, and also their dependences on the unit cell volume, were carried out for the paramagnetic phases of RT4Al8 systems. These calculations were supplemented with measurements of magnetic susceptibilities of representative RT4Al8 compounds as functions of temperature and hydrostatic pressure.

PACS: 71.20.Eh Rare earth metals and alloys;
PACS: 71.15.Mb Density functional theory, local density approximation, gradient and other corrections;
PACS: 75.80.+q Magnetomechanical effects, magnetostriction.

Key words: 4Al8, magnetic susceptibility, superconductivity, magnetovolume effect.

Published online: April 25, 2016

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