Abstract
The intrinsic and impurity luminescence in natural meionite Ca4[Al6Si6O24]CO3 (scapolite) is investigated. Several luminescence bands in the region of 3–5 eV are identified, with excitation occurring in the 6–8 eV range. These bands are associated with different complexes within the meionite structure. Additionally, impurity luminescence at approximately 2.25 eV is observed, which is attributed to Mn2+ ions. This luminescence is not only excited through intracenter d–d excitation but also in the region of excitation of intrinsic luminescence related to carbonate complexes. The origin of the blue coloration in the studied meionite is also discussed, which is attributed to the formation of CO3•- anion radicals after irradiation. These complexes are also detected in the Raman spectrum.
Published Version
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 call