Publication Date:
2016-07-30
Description:
Photoluminescence and excitation spectra of microcrystalline and nanocrystalline nickel tungstate (NiWO 4 ) were measured using UV-VUV synchrotron radiation source. The origin of the bands is interpreted using comparative analysis with isostructural ZnWO 4 tungstate and based on the results of recent first-principles band structure calculations. The influence of the local atomic structure relaxation and of Ni 2+ intra-ion d–d transitions on the photoluminescence band intensity are discussed.
Print ISSN:
1063-777X
Electronic ISSN:
1090-6517
Topics:
Physics