The specific heat of the colossal magnetoresistance material Nd 0.67 Sr 0.33 MnO 3 is reported for 0.35рT р280 K, Hϭ0 and 1рTр120 K, Hϭ9 T. The results include a Schottky-like specific-heat anomaly for the Nd ordering, an ''attenuation'' of the Mn ordering anomaly, and a T-dependent ''linear term,'' ␥(T)T. This unusual combination of features is interpreted as arising from an interaction between the Nd and Mn spin systems. The expected magnetic entropy is recovered only if a contribution from the ␥(T)T term is included.
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