Pires, Ana Maria [UNESP]Davolos, Marian Rosaly [UNESP]Stucchi, Elizabeth Berwerth [UNESP]2014-05-202014-05-202001-11-01International Journal of Inorganic Materials. Oxford: Elsevier B.V., v. 3, n. 7, p. 785-790, 2001.1466-6049http://hdl.handle.net/11449/35906This work reports on the luminescence spectroscopy sensitivity in the determination of the phase purity in gadolinium compounds using Eu3+ as a probe. Cubic Gd2O3 and hexagonal Gd2O2S doped with Eu3+ spherical fine particles were obtained from doped gadolinium basic carbonates with morphological control and were also characterized by IR and XRD. Doped samples present Eu3+ characteristic transitions, with specific energy positions related to each phase. Emission and excitation spectra patterns were established for oxide and oxysulfide compounds, then oxysulfate and oxide impurities generated during oxysulfide preparation were monitored. From emission spectra some experimental intensity parameters were also calculated. All spectroscopic results reflect the presence or not of impurities in all compounds. (C) 2001 Elsevier B.V. Ltd. All rights reserved.785-790enggadoliniumeuropium probeluminescenceArtigo10.1016/S1466-6049(01)00041-1WOS:000172827300031Acesso restrito42848093425462879430703714241591