title: Factors affecting the Nd3+(REE3+) luminescence of minerals.
abstract: In this paper, possibilities and limits of the application of REE3+luminescence (especially the Nd3+4F3/2→4I9/2emission) as structural probe are evaluated. Important factors controlling the Nd3+luminescence signal are discussed, including effects of the crystal-field, crystal orientation, structural state, and temperature. Particular attention was paid to the study of the accessory minerals zircon (ZrSiO4), xenotime-(Y) (YPO4), monazite-(Ce) (CePO4) and their synthetic analogues. Based on these examples we review in short that (1) REE3+luminescence can be used as non-destructive phase identification method, (2) the intensities of certain luminescence bands are strongly influenced by crystal orientation effects, and (3) increased widths of REE3+-related emission bands are a strong indicator for structural disorder. We discuss the potential of luminescence spectroscopy, complementary to Raman spectroscopy, for the quantitative estimation of chemical (and potentially also radiation-induced) disorder. For the latter, emissions of Nd3+-related centres are found to be promising candidates.
authors.affiliation: Institut für Mineralogie und Kristallographie, Universität Wien, Althanstraße 14, 1090 Wien, Austria.
authors.forename: Christoph
authors.initials: C
authors.lastname: Lenz
authors.affiliation: Institut für Mineralogie und Kristallographie, Universität Wien, Althanstraße 14, 1090 Wien, Austria ; Institute of Geological Sciences, Masaryk University, Kotlářská 2, 61137 Brno, Czech Republic.
authors.forename: Dominik
authors.initials: D
authors.lastname: Talla
authors.affiliation: Institut für Mineralogie und Kristallographie, Universität Wien, Althanstraße 14, 1090 Wien, Austria.
authors.forename: Katja
authors.initials: K
authors.lastname: Ruschel
authors.affiliation: Institute of Geological Sciences, Masaryk University, Kotlářská 2, 61137 Brno, Czech Republic.
authors.forename: Radek
authors.initials: R
authors.lastname: Škoda
authors.affiliation: Institut für Mineralogie, TU Bergakademie Freiberg, Brennhausgasse 14, 09596 Freiberg, Germany.
authors.forename: Jens
authors.initials: J
authors.lastname: Götze
authors.affiliation: Institut für Mineralogie und Kristallographie, Universität Wien, Althanstraße 14, 1090 Wien, Austria.
authors.forename: Lutz
authors.initials: L
authors.lastname: Nasdala