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Abstract:
Non-magnetic La and Y impurities in CeCu2.2Si2 give rise to a “diamagnetic” pair-breaking effect and, in addition, Gd causes “paramagnetic” pair breaking. In dilute (0 < × ≦ 5at%) Ce1-xLaxCu2.2Si2 alloys an “alloying-induced depression of incoherent scattering” is observed and related to the formation of antiferromagnetic order at several K.