Spectroscopic studies of the Eu3+ and Er3+ ions in the fluorozirconate LaZr2F11 matrix
dc.contributor.author | Dexpert-Ghys, J. | |
dc.contributor.author | Ribeiro, SJL | |
dc.contributor.author | Dugat, P. | |
dc.contributor.author | Avignant, D. | |
dc.contributor.author | Faucher, M. D. | |
dc.contributor.institution | CNRS | |
dc.contributor.institution | Universidade Estadual Paulista (Unesp) | |
dc.contributor.institution | Univ Blaise Pascal | |
dc.contributor.institution | Ecole Cent Paris | |
dc.date.accessioned | 2014-05-20T15:21:17Z | |
dc.date.available | 2014-05-20T15:21:17Z | |
dc.date.issued | 2000-02-15 | |
dc.description.abstract | An investigation by optical spectroscopy of the Eu3 + and Er3 + active ions in the crystallized fluorozirconate matrix LaZr2F11 is presented. The D-5(1) --> F-7(0-5) emission lines of Eu3 + are used to extract the F-7(0-5) energy scheme and the observed extinctions permit the deduction of irreducible representations (IRREPS) associated with corresponding sub-levels in the D-2 symmetry. The crystal field analysis was carried out on a 387 x 387 basis set, comprising the F-7, D-5(1,2,3) F-5(1,2), (5)G(1,2,3) and P-3(1,2,3,4,5,6) terms of the Eu-3 (+) 4f(6) configuration. The deviation and rms are 6.8 and 7.9 cm (-1), respectively for 38 levels and ten parameters. The experimental crystal field parameters are in good agreement with the ab-initio ones. Moreover, the relative intensities of the D-5(0) --> F-7(2,3,4) emissions are well reproduced by an 'ab-initio' calculation, except for three lines. The Er3 + ions introduced in LaZr2F11, microcrystals also lie in an unique crystallographic site. A total of 31 energy levels were recorded and the crystal field analysis led to 6.6 and 7.8 cm (-1) for the deviation and rms, respectively, for nine variable parameters taken into account. The experimental CF parameters for Er3 + and Eu3 + are very similar, which seems to show that the host lattice contracts around the smaller Er3 + ion. The informations given by both Eu3 + and Eu3 + optical probes in LaZr2F11 are very consistent with the structure previously determined for the isotypic PrZr2F11 fluoride. (C) 2000 Elsevier B.V. B.V. All rights reserved. | en |
dc.description.affiliation | CNRS, CEMES, F-31055 Toulouse 4, France | |
dc.description.affiliation | UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil | |
dc.description.affiliation | Univ Blaise Pascal, CNRS, Upres A 6002, Lab Mat Inorgan, F-63177 Aubiere, France | |
dc.description.affiliation | Ecole Cent Paris, Lab SPMS, UMR 8580, F-92295 Chatenay Malabry, France | |
dc.description.affiliationUnesp | UNESP, Inst Quim, BR-14800900 Araraquara, SP, Brazil | |
dc.format.extent | 475-483 | |
dc.identifier | http://dx.doi.org/10.1016/S1386-1425(99)00151-1 | |
dc.identifier.citation | Spectrochimica Acta Part A-molecular and Biomolecular Spectroscopy. Oxford: Pergamon-Elsevier B.V., v. 56, n. 3, p. 475-483, 2000. | |
dc.identifier.doi | 10.1016/S1386-1425(99)00151-1 | |
dc.identifier.issn | 1386-1425 | |
dc.identifier.uri | http://hdl.handle.net/11449/32453 | |
dc.identifier.wos | WOS:000085570600006 | |
dc.language.iso | eng | |
dc.publisher | Elsevier B.V. | |
dc.relation.ispartof | Spectrochimica Acta - Part A: Molecular and Biomolecular Spectroscopy | |
dc.relation.ispartofjcr | 2.880 | |
dc.relation.ispartofsjr | 0,648 | |
dc.rights.accessRights | Acesso restrito | |
dc.source | Web of Science | |
dc.subject | europium | pt |
dc.subject | erbium | pt |
dc.subject | optical probe | pt |
dc.subject | crystal field | pt |
dc.subject | fluorozirconate | pt |
dc.title | Spectroscopic studies of the Eu3+ and Er3+ ions in the fluorozirconate LaZr2F11 matrix | en |
dc.type | Artigo | |
dcterms.license | http://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy | |
dcterms.rightsHolder | Elsevier B.V. |
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