Short-range magnetic correlations and spin dynamics in the paramagnetic regime of (Mn,Fe)2(P,Si)

X. F. Miao, L. Caron, J. Cedervall, P. C M Gubbens, P. Dalmas De Réotier, A. Yaouanc, F. Qian, A. R. Wildes, H. Luetkens, A. Amato, N. H. Van Dijk, E. Brück

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Abstract

The spatial and temporal correlations of magnetic moments in the paramagnetic regime of (Mn,Fe)2(P,Si) have been investigated by means of polarized neutron diffraction and muon-spin relaxation techniques. Short-range magnetic correlations are present at temperatures far above the ferromagnetic transition temperature (TC). This leads to deviations of paramagnetic susceptibility from Curie-Weiss behavior. These short-range magnetic correlations extend in space, slow down with decreasing temperature, and finally develop into long-range magnetic order at TC.

Original languageEnglish
Article number014426
JournalPhysical Review B (Condensed Matter and Materials Physics)
Volume94
Issue number1
DOIs
Publication statusPublished - 20 Jul 2016

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