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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2008, Volume 87, Issue 6, Pages 338–342
(Mi jetpl62)
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This article is cited in 16 scientific papers (total in 16 papers)
CONDENSED MATTER
Lattice dynamics of BiFeO3: The untypical behavior of the ferroelectric instability under hydrostatic pressure
V. I. Zinenko, M. S. Pavlovskii Kirensky Institute of Physics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russia
Abstract:
Within a nonempirical model of an ionic crystal with the inclusion of the dipole and quadrupole ion polarizations, the lattice vibrational frequencies, high-frequency dielectric constant, Born dynamic charges, and the elasticity moduli of the BiFeO3 crystal have been calculated and their dependencies on the hydrostatic pressure in the cubic, rhombic, and rhombohedral phases have been determined. The results indicate the presence of the ferroelectric instability, which depends weakly on the pressure in all of the phases investigated. The dependence of the crystal lattice dynamics on the applied pressure for the cubic phases of BiAlO3, BaTiO3, and PbTiO3 has been calculated for comparison.
Received: 31.01.2008
Citation:
V. I. Zinenko, M. S. Pavlovskii, “Lattice dynamics of BiFeO3: The untypical behavior of the ferroelectric instability under hydrostatic pressure”, Pis'ma v Zh. Èksper. Teoret. Fiz., 87:6 (2008), 338–342; JETP Letters, 87:6 (2008), 288–291
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https://www.mathnet.ru/eng/jetpl62 https://www.mathnet.ru/eng/jetpl/v87/i6/p338
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Abstract page: | 262 | Full-text PDF : | 114 | References: | 44 |
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