Research article - Peer-reviewed, 2008
Photoluminescence investigations of Eu3+ doped BaTiO3 nanopowders fabricated using heterometallic tetranuclear alkoxide complexes
Pazik, R.; Hreniak, D.; Strek, W.; Kessler, V. G.; Seisenbaeva, G. A.Abstract
The synthesis of Ba-Ti precursors was achieved by a self-assembly synthesis starting from barium metal, titanium n-propoxide and 2,2,6,6-tetramethyl-heptanedione (Hthd) in (PrOH)-Pr-n. The structure of the obtained Ba2Ti2(thd)(4)((OPr)-Pr-n)(8)((n)Pr0H)2 compound is of the M2M2'X-16 type-one of the most widespread for both the homo- and heterometallic tetranuclear alkoxide complexes. It remains unchanged in solution according to the NMR data, which are easily interpreted in terms of the same molecular structure as that revealed by crystallography for the solid state. In order to form BaTiO3 phase doped with 1% of the Eu3+ the heterometallic alkoxide complex of barium and titanium with the necessary amount of Eu dissolved in the reaction mixture were hydrolyzed by moist ethanol on reflux in 1 M solution in n-propanol. The obtained gels were dried in vacuum and have been heat treated at different temperatures (700-1100 degrees C). XRD measurements were performed in order to study the phase formation and grain size. TEM images have been taken for the morphology and grain size characterization. Emission spectra and decay times were measured for the description of the luminescence properties of the obtained system. (c) 2007 Elsevier B.V. All rights reserved.Keywords
barium titanate; double titanates; europium; nanopowders; single-source precursors; luminescencePublished in
Journal of Alloys and Compounds2008, volume: 451, number: 1-2, pages: 557-562
Publisher: ELSEVIER SCIENCE SA
Authors' information
Pązik, R.
Polish Academy of Sciences (PAN)
Hreniak, D.
Polish Academy of Sciences (PAN)
Stręk, W.
Polish Academy of Sciences (PAN)
Swedish University of Agricultural Sciences, Department of Chemistry
Swedish University of Agricultural Sciences, Department of Chemistry
UKÄ Subject classification
Inorganic Chemistry
Publication Identifiers
DOI: https://doi.org/10.1016/j.jallcom.2007.04.232
URI (permanent link to this page)
https://res.slu.se/id/publ/17495