Judd−Ofelt analysis, electronic and elastic properties from ab-initio study and photo-cathodoluminescence studies of Eu³⁺ activated CdWO₄ nanophosphors

Electronic properties and high-pressure behavior of wolframite-type CoWO4

“…This article is licensed under a Creative Commons Attribution-NonCommercial 3.0 Unported Licence. The C ij parameters of CoWO 4 in Table 7 are roughly similar to those reported previously for CdWO 4 and ZnWO 4 and may be thus considered typical for AWO 4 compounds 52,53 even when they are calculated using an orthorhombic approximation for the structure of these compounds. 54 The eigenvalues (i=1,..,6) of the C matrix, as shown in Table 8, are all positive at ambient conditions, thus satisfying one of the four equivalent formulations of the Born elastic stability criterion.…”

“…These parameters are summarized in Table 9 for CoWO 4 and all of them are in line with those already reported for CdWO 4 and ZnWO 4 . [52][53][54] Voight Reuss Average B 0 (GPa) The average bulk modulus B 0 =164 GPa calculated using the C matrix is slightly overestimated with respect to the experimental value, even if such discrepancies are not uncommon for wolframites. 38,53 Nonetheless, the bulk modulus calculated using the elastic matrix is in perfect agreement with theoretical values shown in Table 5.…”