Raman and structural characterization of LuAlO{sub 3}

Journal Article · Tue Nov 15 00:00:00 EST 2011 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1016/j.jssc.2011.09.007· OSTI ID:21580072

Casu, Alberto ^[1]; Ricci, Pier Carlo ^[1]

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1. Dipartimento di Fisica, Universita di Cagliari-S.P. Monserrato-Sestu Km 0.700 09042 Monserrato, Cagliari (Italy)

The structural and vibrational properties of lutetium orthoaluminate perovskite (LuAlO{sub 3}) were investigated by means of Raman spectroscopy and EXAFS measurements. The analysis of Raman spectra taken in four different polarized configurations along the principal axes at 20 K and room temperature conditions permits to assign the principal vibrational modes in LuAP single crystals and to confirm the belonging to the D{sub 2h}{sup 16} space group. EXAFS measurements were performed at room temperature in order to obtain local structural informations on the first and next nearest neighbors around lutetium absorptions sites. Unit cell parameters and bond lengths were determined by the analysis of the EXAFS spectroscopy at the L{sub 3} absorption edge of lutetium. The informations thus gathered on this compound can offer a useful addition in the framework of a full structural characterization of LuAlO{sub 3}. - Graphical abstract: Raman active mode in LuAP crystal. Highlights: > Structural characterization of LuAlO{sub 3} is obtained by Raman and EXAFS spectroscopies. > Vibrational modes, temperature-dependent variations studied by Raman spectroscopy. > Cell parameters and local characterization obtained by EXAFS spectroscopy.

• OSTI ID: 21580072
• Journal Information: Journal of Solid State Chemistry, Vol. 184, Issue 11; Other Information: DOI: 10.1016/j.jssc.2011.09.007; PII: S0022-4596(11)00498-1; Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.; ISSN 0022-4596
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
ABSORPTION
ABSORPTION SPECTROSCOPY
BOND LENGTHS
FINE STRUCTURE
LUTETIUM
MONOCRYSTALS
PEROVSKITE
RAMAN SPECTRA
RAMAN SPECTROSCOPY
SPACE GROUPS
TEMPERATURE DEPENDENCE
X-RAY SPECTROSCOPY
CRYSTALS
DIMENSIONS
ELEMENTS
LASER SPECTROSCOPY
LENGTH
METALS
MINERALS
OXIDE MINERALS
PEROVSKITES
RARE EARTHS
SORPTION
SPECTRA
SPECTROSCOPY
SYMMETRY GROUPS