Abstract

Band structure calculations were performed on R2M17 compounds where R is a heavy rare earth or Y and M=Fe, Co or Ni, by using TB-LMTO-ASA method. The 4f–5d–3d exchange interactions were analysed. The magnetic moments of transition metals, at various sites, were determined and analysed in correlation with their local environments. The R5d band polarizations are linearly dependent on De Gennes factor and are due both to local 4f–5d and to 5d–3d short-range exchange interactions.

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