Investigation of Cr3+ ions in Cs2NaGaF6 single crystals by optical spectroscopy

Autor:	Armando Dias Tavares, R. J. M. da Fonseca, N. M. Khaidukov, P. S. Silva, T. Abritta
Rok vydání:	1999
Předmět:	Chemistry Materials Chemistry Analytical chemistry Time resolution General Chemistry Emission spectrum Condensed Matter Physics Spectroscopy Fluorescence Excitation Ion
Zdroj:	Solid State Communications. 110:519-524
ISSN:	0038-1098
DOI:	10.1016/s0038-1098(99)00008-3
Popis:	Two different Cr3+ crystal-field sites in the elpasolite Cs2NaGaF6 were investigated by excitation and emission spectroscopy at 4.2, 77 and 300 K. The zero-phonon lines of the 2E→4A2 transition are clearly observed on time-resolved emission spectra and associated with each type of site by high-resolution emission measurements. The different fluorescence lifetimes at 4.2 K confirm the identification of the sites. The crystal-field parameter, Dq, and Racah parameters, B and C, are determined, and we establish an intermediate crystal-field situation for both Cr3+ centers.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::f4487441daf2fc97dfebbc96ef54551d https://doi.org/10.1016/s0038-1098(99)00008-3 Zobrazit plný text záznamu Full Text from ScienceDirect