Abstract

Electrical resistivity results of Ce ( Pt 1 - x Ni x ) Ga and CePt ( Ga 1 - y Al y ) alloys show features at low temperature indicating antiferromagnetic ordering and Kondo behaviour. The variation of Néel temperature with alloy composition is interpreted in terms of a Doniach diagram and the possible existence of a quantum critical point is indicated. Magnetoresistance data are presented and analysed in terms of the Schlottmann formalism.

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