Specific heat of Nd0.67Sr0.33MnO3

The specific heat of the colossal magnetoresistance material Nd0.67Sr0.33Mn O3 is reported for 0.35 less than or equal to T less than or equal to 280 K , H=0 and 1 less than or equal to T less than or equal to 120 K, H=9 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 ter m," gamma(T)T. This unusual combination of features is interpreted as arisi ng from an interaction between the Nd and Mn spin systems. The expected mag netic entropy is recovered only if a contribution from the gamma(T)T term i s included. [S0163-1829(99)03501-8].