Low-temperature specific heat oM anM

We report measurements of the specific heat of (Formula presented)(Formula presented)Mn(Formula presented) and (Formula presented)(Formula presented)Mn(Formula presented) for temperatures (Formula presented) K. These materials are ferromagnetic metallic oxides which exhibit colossal magnetoresistance. We find that above 3 K the specific heat has terms proportional to (Formula presented) and (Formula presented), but a (Formula presented) term, as might be expected from the excitation of ferromagnetic spin waves, cannot be resolved outside of the precision of the data. The cubic term gives Debye temperatures of 400±17 K, and the linear term gives electron densities of states which are enhanced over band-structure estimates.