Abstract
We report measurements of the specific heat of Mn and Mn for temperatures K. These materials are ferromagnetic metallic oxides which exhibit colossal magnetoresistance. We find that above 3 K the specific heat has terms proportional to and , but a 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.
- Received 14 June 1996
DOI:https://doi.org/10.1103/PhysRevB.54.14926
©1996 American Physical Society