%0 Journal Article %1 WOS:000361158300053 %A Novais, A L F %A Dantas, N O %A Guedes, I %A Vermelho, M V D %C PO BOX 564, 1001 LAUSANNE, SWITZERLAND %D 2015 %I ELSEVIER SCIENCE SA %J JOURNAL OF ALLOYS AND COMPOUNDS %K Luminescence} Optical Oxide Radiation effects; materials; properties; spectroscopy; {Optical %P 338-345 %R 10.1016/j.jallcom.2015.06.148 %T Spectroscopic properties of highly Nd-doped lead phosphate glass %V 648 %X The spectroscopic characteristics of highly Nd3+-doped lead phosphate glasses (xNd:Pb-3(PO4)(2)) have been investigated. The X-ray spectra show that the matrices are glassy up to 25 wt% of Nd3+ doping. From the Judd-Ofelt analysis we observe that while the Omega((2)) parameter remains constant indicating that the 4f(N) and 4f(N-1)5 d(1) configurations are not affected by the Nd3+ doping, the behavior of both Omega((4)) and Omega((6)) changes for 15 wt% of Nd3+ doping. The reduction of the Omega((6)) parameter is related to the increase of the covalence bonding between the ligands and the Nd3+ ions. At this particular concentration, the radiative lifetime has a four-fold enhancement. Such behaviors are likely to be related to a modification in the glass structure for high Nd3+ concentrations. (C) 2015 Elsevier B.V. All rights reserved.

@article{WOS:000361158300053, abstract = {The spectroscopic characteristics of highly Nd3+-doped lead phosphate glasses (xNd:Pb-3(PO4)(2)) have been investigated. The X-ray spectra show that the matrices are glassy up to 25 wt% of Nd3+ doping. From the Judd-Ofelt analysis we observe that while the Omega((2)) parameter remains constant indicating that the 4f(N) and 4f(N-1)5 d(1) configurations are not affected by the Nd3+ doping, the behavior of both Omega((4)) and Omega((6)) changes for 15 wt% of Nd3+ doping. The reduction of the Omega((6)) parameter is related to the increase of the covalence bonding between the ligands and the Nd3+ ions. At this particular concentration, the radiative lifetime has a four-fold enhancement. Such behaviors are likely to be related to a modification in the glass structure for high Nd3+ concentrations. (C) 2015 Elsevier B.V. All rights reserved.}, added-at = {2022-05-23T20:00:14.000+0200}, address = {PO BOX 564, 1001 LAUSANNE, SWITZERLAND}, author = {Novais, A L F and Dantas, N O and Guedes, I and Vermelho, M V D}, biburl = {https://www.bibsonomy.org/bibtex/2d770f08501380d3e2851d73965469448/ppgfis_ufc_br}, doi = {10.1016/j.jallcom.2015.06.148}, interhash = {6c5fe5179424f176006d755380ef759f}, intrahash = {d770f08501380d3e2851d73965469448}, issn = {0925-8388}, journal = {JOURNAL OF ALLOYS AND COMPOUNDS}, keywords = {Luminescence} Optical Oxide Radiation effects; materials; properties; spectroscopy; {Optical}, pages = {338-345}, publisher = {ELSEVIER SCIENCE SA}, pubstate = {published}, timestamp = {2022-05-23T20:00:14.000+0200}, title = {Spectroscopic properties of highly Nd-doped lead phosphate glass}, tppubtype = {article}, volume = 648, year = 2015 }