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Title: Magnetovolume effects and effect of pressure on the temperature dependence of sublattice magnetization in Ho(Co{sub 0.9}Ga{sub 0.1}){sub 2} compounds

The temperature dependence of the magnetic moments of cobalt and holmium ions in the temperature range of 5–300 K at pressures of P = 0 and 5 kbar was determined based on neutron diffraction data on Ho(Co{sub 0.9}Ga{sub 0.1}){sub 2} intermetallide. The temperature dependence of the lattice parameter was established, and the spontaneous bulk magnetostriction was determined. These quantities were calculated using the exchange striction model of a ferrimagnet, and good agreement with the experiment was obtained. The parameters of the exchange interaction between pairs of atoms of this compound and the magnetoelastic coupling constant were estimated. An original interpretation of the nature of the first-order magnetic phase transition in HoCo{sub 2} is proposed.
Authors:
;  [1]
  1. Russian Academy of Sciences, Ural Branch, Mikheev Institute of Metal Physics (Russian Federation)
Publication Date:
OSTI Identifier:
22471919
Resource Type:
Journal Article
Resource Relation:
Journal Name: Crystallography Reports; Journal Volume: 61; Journal Issue: 1; Other Information: Copyright (c) 2016 Pleiades Publishing, Inc.; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COBALT; COUPLING CONSTANTS; EXCHANGE INTERACTIONS; GALLIUM; HOLMIUM; HOLMIUM IONS; INTERMETALLIC COMPOUNDS; LATTICE PARAMETERS; MAGNETIC MOMENTS; MAGNETIZATION; MAGNETOSTRICTION; NEUTRON DIFFRACTION; PHASE TRANSFORMATIONS; TEMPERATURE DEPENDENCE