Abstract
Reflection electron energy-loss spectra are reported for the family of compounds over the entire homogeneity range (0.8<x<1.3). The spectra exhibit a plasmon feature on the low-energy side, while several interband transitions are prominent at higher energies. The real and imaginary parts of dielectric functions and optical conductivity for these compounds are determined using the Kramers-Kronig analysis. The results exhibit systematic behavior with varying oxygen stoichiometry.
- Received 22 June 1995
DOI:https://doi.org/10.1103/PhysRevB.52.14526
©1995 American Physical Society