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VOLUME 58 (1993) | ISSUE 12 | PAGE 975
Raman scattering in mercury-based high- Tc superconducting ceramics
Raman scattering spectra have been measured in superconducting samples of the mercury-cuprate homologous series HgBa2Caw_iCuw02„_(_2+-c with n=l, 2y 3. A comparative analysis of these results and the corresponding data on thallium-based high-7^ superconductors is carried out. All the observed Raman scattering lines (or frequencies) are attributed to combinations of Ol and 02 oxygen. The Raman scattering spectrum of a precursor of the 1212 phase, Ba2CaCu205, has been studied.