@article{315d3a708aad4cec89f09ff3a9a9ed13,
title = "Photoluminescence of synthetic titanite-group pigments: A rare quenching effect",
abstract = "Chromium-doped titanite and malayaite samples, which were synthesised to evaluate their performance as ceramic pigments, show remarkable photoluminescence behaviour. Emissions of centres related to traces of trivalent rare-earth elements (REE) are observed exclusively from chromium-free samples. Their Cr-doped analogues (containing the same REEs on the same concentration levels), in contrast, only show broad-band Cr3+ emission whereas all REE emissions are suppressed. This behaviour is assigned to quenching of REE emissions by chromium centres (i.e., REE3+→Cr3+ energy transfer).",
keywords = "Chromium, Photoluminescence, Quenching, Rare-earth elements, Titanite",
author = "Lutz Nasdala and {Stoyanova Lyubenova}, Teodora and Michael Gaft and Manfred Wildner and Wilfredo Diegor and Christian Petautschnig and Dominik Talla and Christoph Lenz",
note = "Funding Information: Thanks are due to J.M. Hanchar for help with the preparation of LA–ICP–MS samples, and J. Carda and M. Tubrett for constructive comments. A part of the major-element analyses were kindly done by R. Janjic, Bruker AXS, Karlsruhe, Germany. Electron microscope images were obtained by R. {\v S}koda. Financial support was provided by the Austrian Science Fund (FWF), grant P24448-N19 to L.N. Co-author T.S.L. acknowledges financial support by the Spanish Ministry of Science and Education in the framework of project “Formation of University Professors” (FPU).",
year = "2014",
month = oct,
doi = "10.1016/j.chemer.2014.04.004",
language = "אנגלית",
volume = "74",
pages = "419--424",
journal = "Chemie der Erde",
issn = "0009-2819",
publisher = "Elsevier GmbH",
number = "3",
}