Abstract:
Neutron powder diffraction was employed to study the pressure effect on the magnetic transition in the pseudobinary Laves-phase compound Er0.57Y0.43Co2 and to determine the magnetic moments of the Er- and Co-subsystems. Our studies reveal that the onset of long-range magnetic order for both the localized 4 f (Er) and itinerant 3 d (Co) electron moments appears at about the same temperature at ambient pressure. The pressure effect on Tc is found to be negative and equal for both sublattices, namely T c / p ∼ - 0.4 K/kbar. The values of the magnetic moments of the Er and the Co ions are found = 5.40±0.15μ B /atom, = 0.50±0.07μ B /atom and 5.35±0.15μ B /atom, 0.37±0.09μ B /atom, for p = 0 and 6 kbar, respectively. Our experimental results give evidence for short-range magnetic order formation at temperatures already above Tc and for a coexistence short- and long-range order below Tc down to 4 K.
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Received 20 December 2001 / Received in final form 12 June 2002 Published online 31 October 2002
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Podlesnyak, A., Strässle, T., Mirmelstein, A. et al. Magnetization and neutron scattering studies of the pressure effect on the magnetic transition in Er Y Co . Eur. Phys. J. B 29, 547–552 (2002). https://doi.org/10.1140/epjb/e2002-00338-y
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DOI: https://doi.org/10.1140/epjb/e2002-00338-y