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The combination of itinerant transition metal (M=Fe) and localised rare earth (R=Gd-Yb) magnetism in RFe2 compounds has been investigated in self-consistent energy band calculations. The computed and measured total moments are in good agreement. There is a significant contribution to the moment from the R-5d partial moments coupled anti-parallel to the Fe-3d moment, which results from 3d-5d hybridisation. The R-4f moments interact with the conduction band system solely by local exchange interactions which are calculated ab initio from density functional theory. A sum rule for the total 3d + 5d moment is shown to be obeyed and an expression for the effective ferrimagnetic exchange interaction between 3d and 4f electrons is derived.

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Authors: BROOKS M S S, JRC Karlsruhe (DE);NORDSTRÖM L, University of Uppsala, Institute of Physics, Uppsala (SE);JOHANSSON B, University of Uppsala, Institute of Physics, Uppsala (SE);NORDSTROM L, University of Uppsala, Institute of Physics, Uppsala (SE)
Bibliographic Reference: Paper presented: 35th Annual Conference of Magnetism and Magnetic Materials, San Diego (US), Oct. 29 - Nov. 1, 1990
Availability: Available from (1) as Paper EN 35548 ORA
Record Number: 199011600 / Last updated on: 1994-12-02
Original language: en
Available languages: en