Vibrational spectra and elastic piezoelectric and polarization properties of the {alpha}-SrB{sub 4}O{sub 7} crystal

Journal Article · Sat Sep 15 00:00:00 EDT 2012 · Journal of Experimental and Theoretical Physics

DOI:https://doi.org/10.1134/S1063776112080195· OSTI ID:22069344

Pavlovskii, M S; Zaitzev, A I; Krylov, A S; Shinkorenko, A S ^[1]

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1. Russian Academy of Sciences, Kirensky Institute of Physics, Siberian Branch (Russian Federation)

The crystal lattice vibrational frequencies in the center of the Brillouin zone have been determined with the Raman spectroscopy method. The lattice vibrational frequencies, the phonon density of states, elastic and piezoelectric moduli, Born dynamic charges, and high-frequency dielectric constant have been calculated using the density functional method. All calculated quantities have been compared to the experimental data. A model of a nonpolar paraelectric phase for this compound, as well as a mechanism of the formation of domain in it, has been proposed. The polarization in the experimentally observed polar phase has been calculated.

• OSTI ID: 22069344
• Journal Information: Journal of Experimental and Theoretical Physics, Vol. 115, Issue 3; Other Information: Copyright (c) 2012 Pleiades Publishing, Ltd.; Country of input: International Atomic Energy Agency (IAEA); ISSN 1063-7761
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
BORATES
BRILLOUIN ZONES
CRYSTAL LATTICES
CRYSTALS
DENSITY FUNCTIONAL METHOD
LATTICE VIBRATIONS
PERMITTIVITY
PHONONS
PIEZOELECTRICITY
POLARIZATION
RAMAN SPECTROSCOPY
STRONTIUM COMPOUNDS