Infrared study of the phonon modes in PrMnO${}_3$ and CaMnO${}_3$

R. Sopracase, G. Gruener, E. Olive +1

The infrared (IR) reflectivity spectra of orthorhombic manganese perovskites PrMnO${}_3$ and CaMnO${}_3$ are studied in the frequency range of optical phonon modes at temperatures vary…