Abstract
Polarized Raman measurements have been made for single crystals of Na, K, Ag and Li β″-alumina. For each material, the modes due principally to the mobile cations have been identified. The number and symmetry of the observed modes can best be explained by considering the local ordering of the cations as a two-dimensional superlattice. Raman spectra for a number of Na β″-alumina samples with different growth temperatures, compositions, and degrees of hydration were carefully compared. Several of the observed differences in the Raman intensities can be attributed to the effects of either composition or short-range superlattice ordering. A Raman mode which is a likely candidate for the attempt mode for diffusion has been identified for the Na, K and Ag crystals.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
