A. Memon et al., INFRARED TEMPERATURE-DEPENDENT STUDIES OF BI2SR2CACU2O8 GLASS-CERAMICSUPERCONDUCTORS, Physica. C, Superconductivity, 235, 1994, pp. 1133-1134
We report on the investigation of infrared reflectance spectroscopy on
Bi2Sr2CaCu2O8 glass ceramics superconductor in the temperature range
20 K to 300 K and between the frequency of 100 to 20000 cm(-1). The fr
equency dependent conductivity was calculated by Kramer-Kronig transfo
rmation of the reflectance spectra. Analysis by Drude and lattice vibr
ation models reveals the Drude plasma frequency and the reflectance ed
ge, closer to those of a single crystal. All the predicted phonon mode
s are observed in the measured spectra. We did not find any appreciabl
e change in the frequency and. oscillator strength of the phonons in t
he present temperature range.