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Title: Crystal structure of Eu-doped magnetoplumbite-type lanthanum aluminum oxynitride with emission site splitting

Abstract

Eu-doped lanthanum aluminum oxynitride (LaAl{sub 12}(O,N){sub 19}) with magnetoplumbite structure was prepared by nitridation of the oxide precursor obtained from aluminum glycine gel and subsequent post-annealing. Eu-doped lanthanum aluminum oxynitride exhibited blue light emission at 440 nm with a shoulder at 464 nm under excitation at 254 nm. Isostructural Eu-doped calcium aluminum oxide (CaAl{sub 12}O{sub 19}) exhibited a single emission peak at 415 nm. Structural refinement using neutron powder diffraction indicated that the lanthanum site occupied partially by Eu{sup 2+} splits into 2d and 6h sites in the aluminum oxynitride. The longer emission and the shoulder peak in the former aluminum oxynitride were observed in relation to the increasing covalency as well as crystal field splitting around doped Eu{sup 2+} induced by site splitting involved with the two kinds of anions. - Graphical Abstract: Magnetoplumbite type Eu-doped lanthanum aluminum oxynitride has lanthanum site splitting induced by two kinds of anions, causing two emission peaks. Highlights: > Magnetoplumbite type LaAl{sub 12}(O,N){sub 19} doped with Eu shows emission peak splitting. > ND analysis is performed on La{sub 0.97}Eu{sub 0.03}Al{sub 12}(O,N){sub 19} and Ca{sub 0.97}Eu{sub 0.03}Al{sub 12}O{sub 19}. > La{sub 0.97}Eu{sub 0.03}Al{sub 12}(O,N){sub 19} has lanthanum site splitting. > The lanthanum site splittingmore » is induced by coexisting of two kinds of anions.« less

Authors:
 [1]; ; ;  [1]
  1. Faculty of Engineering, Hokkaido University, N13 W8, Kita-ku, Sapporo 060-8628 (Japan)
Publication Date:
OSTI Identifier:
21580264
Resource Type:
Journal Article
Journal Name:
Journal of Solid State Chemistry
Additional Journal Information:
Journal Volume: 184; Journal Issue: 9; Other Information: DOI: 10.1016/j.jssc.2011.07.035; PII: S0022-4596(11)00414-2; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; Journal ID: ISSN 0022-4596
Country of Publication:
United States
Language:
English
Subject:
37 INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY; ALUMINIUM; ALUMINIUM OXIDES; ANIONS; CRYSTAL FIELD; CRYSTAL STRUCTURE; DOPED MATERIALS; EUROPIUM IONS; EXCITATION; LANTHANUM; NEUTRON DIFFRACTION; NITRIDES; PEAKS; PHOTOLUMINESCENCE; ALUMINIUM COMPOUNDS; CHALCOGENIDES; CHARGED PARTICLES; COHERENT SCATTERING; DIFFRACTION; ELEMENTS; EMISSION; ENERGY-LEVEL TRANSITIONS; IONS; LUMINESCENCE; MATERIALS; METALS; NITROGEN COMPOUNDS; OXIDES; OXYGEN COMPOUNDS; PHOTON EMISSION; PNICTIDES; RARE EARTHS; SCATTERING

Citation Formats

Masubuchi, Yuji, E-mail: yuji-mas@eng.hokudai.ac.jp, Hata, Tomoyuki, Motohashi, Teruki, and Kikkawa, Shinichi. Crystal structure of Eu-doped magnetoplumbite-type lanthanum aluminum oxynitride with emission site splitting. United States: N. p., 2011. Web. doi:10.1016/j.jssc.2011.07.035.
Masubuchi, Yuji, E-mail: yuji-mas@eng.hokudai.ac.jp, Hata, Tomoyuki, Motohashi, Teruki, & Kikkawa, Shinichi. Crystal structure of Eu-doped magnetoplumbite-type lanthanum aluminum oxynitride with emission site splitting. United States. doi:10.1016/j.jssc.2011.07.035.
Masubuchi, Yuji, E-mail: yuji-mas@eng.hokudai.ac.jp, Hata, Tomoyuki, Motohashi, Teruki, and Kikkawa, Shinichi. Thu . "Crystal structure of Eu-doped magnetoplumbite-type lanthanum aluminum oxynitride with emission site splitting". United States. doi:10.1016/j.jssc.2011.07.035.
@article{osti_21580264,
title = {Crystal structure of Eu-doped magnetoplumbite-type lanthanum aluminum oxynitride with emission site splitting},
author = {Masubuchi, Yuji, E-mail: yuji-mas@eng.hokudai.ac.jp and Hata, Tomoyuki and Motohashi, Teruki and Kikkawa, Shinichi},
abstractNote = {Eu-doped lanthanum aluminum oxynitride (LaAl{sub 12}(O,N){sub 19}) with magnetoplumbite structure was prepared by nitridation of the oxide precursor obtained from aluminum glycine gel and subsequent post-annealing. Eu-doped lanthanum aluminum oxynitride exhibited blue light emission at 440 nm with a shoulder at 464 nm under excitation at 254 nm. Isostructural Eu-doped calcium aluminum oxide (CaAl{sub 12}O{sub 19}) exhibited a single emission peak at 415 nm. Structural refinement using neutron powder diffraction indicated that the lanthanum site occupied partially by Eu{sup 2+} splits into 2d and 6h sites in the aluminum oxynitride. The longer emission and the shoulder peak in the former aluminum oxynitride were observed in relation to the increasing covalency as well as crystal field splitting around doped Eu{sup 2+} induced by site splitting involved with the two kinds of anions. - Graphical Abstract: Magnetoplumbite type Eu-doped lanthanum aluminum oxynitride has lanthanum site splitting induced by two kinds of anions, causing two emission peaks. Highlights: > Magnetoplumbite type LaAl{sub 12}(O,N){sub 19} doped with Eu shows emission peak splitting. > ND analysis is performed on La{sub 0.97}Eu{sub 0.03}Al{sub 12}(O,N){sub 19} and Ca{sub 0.97}Eu{sub 0.03}Al{sub 12}O{sub 19}. > La{sub 0.97}Eu{sub 0.03}Al{sub 12}(O,N){sub 19} has lanthanum site splitting. > The lanthanum site splitting is induced by coexisting of two kinds of anions.},
doi = {10.1016/j.jssc.2011.07.035},
journal = {Journal of Solid State Chemistry},
issn = {0022-4596},
number = 9,
volume = 184,
place = {United States},
year = {2011},
month = {9}
}