We have investigated the effect of negative magnetisation in the YbFe4Al8 compound by means of Mössbauer effect and magnetic measurements. Our conclusions disagree with earlier studies of the compound, in which the existence of a small amount of superconducting phase was reported. We explain the effect of the negative magnetisation in terms of antiferromagnetic interactions between the moment of Yb and the effective moment of the canted Fe spins. The system exhibits negative magnetisation when the effective moment, which is oriented along the external magnetic field, is dominated at low temperatures by the opposite rare earth moment. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)
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Andrzejewski et al. (2005) studied this question.
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