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Abstract
Polarized 57Fe Mössbauer spectroscopy was applied to a stoichiometric single crystal LuFe2O4 in order to determine the spin configuration of Fe ions. The compound is one of the RFe2O4 (R=Y, Ho, Er, Tm, Yb, and Lu) family, which show some characteristics of a two-dimensional antiferromagnet on a triangular lattice. The antiferromagnet is composed of positive and negative ferrimagnetic domains. It was concluded that among three types of Fe3+ ions, two of them contribute to the minority spins and the rest to the majority spin in a domain. All Fe2+ ions contribute to the majority spins. The spin configuration is consistent with that suggested by the previous investigations.
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