TY  - JOUR
AU  - Srivastava, Alok M.
AU  - Brik, Mikhail G.
AU  - Beers, William W.
AU  - Ma, Chong-Geng
AU  - Piasecki, Michal
AU  - Cohen, William E.
PY  - 2023
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/10610
AB  - A comparative study of Eu3+ luminescence in an isostructural series of phosphate and vanadate compounds correlates the hypersensitivity of the 5D0→7F2 transition to the covalence and polarizability of the (XO4)3- (X = P, V) polyanion. The intensity of this transition, as measured by the ratio, [Formula presented], is always higher in the vanadate system [R (PO4)3-« R (VO4)3-]. Electronic energy band structure of these systems establishes higher covalence and polarizability of the (VO4)3- polyanion, which is due to strong V 3 d - O 2p covalent interaction via hybridization. The difference in the intensity of the hypersensitive transition between the phosphate and vanadate systems is consistent with the prediction of the ligand dipolar polarization model for the 4f-4f dipolar intensities. Our analysis supports the polarizability of (XO4)3- (X = P, V) over local site distortion effects as the intensity enhancing mechanism of the 5D0→7F2 transition. It is pointed out that the hybridization effect that serves as the source of the intensity of hypersensitive transition also accounts for the origin of second harmonic generation (SHG) in Li3VO4 and its absence in Li3PO4. © 2023 Elsevier B.V.
T2  - Journal of Luminescence
T1  - Intensity of the Eu3+ hypersensitive transition in isostructural phosphate and vanadate compounds
VL  - 257
DO  - 10.1016/j.jlumin.2023.119709
ER  - 

@article{
author = "Srivastava, Alok M. and Brik, Mikhail G. and Beers, William W. and Ma, Chong-Geng and Piasecki, Michal and Cohen, William E.",
year = "2023",
abstract = "A comparative study of Eu3+ luminescence in an isostructural series of phosphate and vanadate compounds correlates the hypersensitivity of the 5D0→7F2 transition to the covalence and polarizability of the (XO4)3- (X = P, V) polyanion. The intensity of this transition, as measured by the ratio, [Formula presented], is always higher in the vanadate system [R (PO4)3-« R (VO4)3-]. Electronic energy band structure of these systems establishes higher covalence and polarizability of the (VO4)3- polyanion, which is due to strong V 3 d - O 2p covalent interaction via hybridization. The difference in the intensity of the hypersensitive transition between the phosphate and vanadate systems is consistent with the prediction of the ligand dipolar polarization model for the 4f-4f dipolar intensities. Our analysis supports the polarizability of (XO4)3- (X = P, V) over local site distortion effects as the intensity enhancing mechanism of the 5D0→7F2 transition. It is pointed out that the hybridization effect that serves as the source of the intensity of hypersensitive transition also accounts for the origin of second harmonic generation (SHG) in Li3VO4 and its absence in Li3PO4. © 2023 Elsevier B.V.",
journal = "Journal of Luminescence",
title = "Intensity of the Eu3+ hypersensitive transition in isostructural phosphate and vanadate compounds",
volume = "257",
doi = "10.1016/j.jlumin.2023.119709"
}

Srivastava, A. M., Brik, M. G., Beers, W. W., Ma, C., Piasecki, M.,& Cohen, W. E.. (2023). Intensity of the Eu3+ hypersensitive transition in isostructural phosphate and vanadate compounds. in Journal of Luminescence, 257.
https://doi.org/10.1016/j.jlumin.2023.119709

Srivastava AM, Brik MG, Beers WW, Ma C, Piasecki M, Cohen WE. Intensity of the Eu3+ hypersensitive transition in isostructural phosphate and vanadate compounds. in Journal of Luminescence. 2023;257.
doi:10.1016/j.jlumin.2023.119709 .

Srivastava, Alok M., Brik, Mikhail G., Beers, William W., Ma, Chong-Geng, Piasecki, Michal, Cohen, William E., "Intensity of the Eu3+ hypersensitive transition in isostructural phosphate and vanadate compounds" in Journal of Luminescence, 257 (2023),
https://doi.org/10.1016/j.jlumin.2023.119709 . .