Skip navigation

Please use this identifier to cite or link to this item:
Title: Luminescence and other spectroscopic properties of purple and green Cr-clinochlore
Authors: Czaja, Maria
Kądziołka-Gaweł, Mariola
Lisiecki, Radosław
Bodył-Gajowska, Sabina
Mazurak, Zbigniew
Keywords: Cr-clinochlore; luminescence; optical absorption; infrared; Raman and Mössbauer spectra
Issue Date: 2014
Citation: Physics and Chemistry of Minerals, Vol. 41, iss. 2 (2014), s. 115-126
Abstract: For the first time ever, the luminescence spectra of Cr3+ centers in two chlorite crystals are presented. Chromium ions occupy the strong crystal-field site M4 in the brucite sheet and the intermediate crystal-field site in the inner octahedral sheet for purple and green chlorite, respectively. We discuss the influence of an effective positive charge on the Cr3+ ion and an effective negative charge of ligands on the differences in the values of the Dq and B parameters. It is concluded that the presence of Fe2+ ions and other point defects, as well as concentration quenching, causes the very short luminescence lifetimes of chromium ions.
DOI: 10.1007/s00269-013-0629-x
ISSN: 0342-1791
Appears in Collections:Artykuły (WNP)

Files in This Item:
File Description SizeFormat 
Czaja_Luminescence_and_other_spectroscopic.pdf873,07 kBAdobe PDFView/Open
Show full item record

Uznanie Autorstwa 3.0 Polska Creative Commons License Creative Commons