Abstract
A time-of-flight neutron inelastic scattering study of the lattice dynamics of Ba{sub 1-x}K{sub x}BiO{sub 3} for x=0.0 and x=0.4 has been performed for the temperatures 10 K, 80 K and 290 K. No temperature effects were found for the generalized phonon density of states. The phonon spectrum of a superconducting sample reveals less in number van Hove singularities and softens in comparison with that of the nonsuperconducting one. On the basis of the simple model for interatomic potential the lattice dynamics of this system was calculated. Some features of the structural phase diagram and the optical spectroscopy data were explained using this model. The calculated phonon density of states was found to be in good agreement with experiment. 36 refs.; 3 figs.
Belushkin, A V;
Vagov, A V;
[1]
Zemlyanov, M G;
Parshin, P P
[2]
- Joint Inst. for Nuclear Research, Dubna (Russian Federation). Lab. of Neutron Physics
- Gosudarstvennyj Komitet po Ispol`zovaniyu Atomnoj Ehnergii SSSR, Moscow (Russian Federation). Inst. Atomnoj Ehnergii
Citation Formats
Belushkin, A V, Vagov, A V, Zemlyanov, M G, and Parshin, P P.
Lattice dynamics of Ba{sub 1-x}K{sub x}BiO{sub 3} as studied by neutron scattering and computer simulation.
JINR: N. p.,
1991.
Web.
Belushkin, A V, Vagov, A V, Zemlyanov, M G, & Parshin, P P.
Lattice dynamics of Ba{sub 1-x}K{sub x}BiO{sub 3} as studied by neutron scattering and computer simulation.
JINR.
Belushkin, A V, Vagov, A V, Zemlyanov, M G, and Parshin, P P.
1991.
"Lattice dynamics of Ba{sub 1-x}K{sub x}BiO{sub 3} as studied by neutron scattering and computer simulation."
JINR.
@misc{etde_10126424,
title = {Lattice dynamics of Ba{sub 1-x}K{sub x}BiO{sub 3} as studied by neutron scattering and computer simulation}
author = {Belushkin, A V, Vagov, A V, Zemlyanov, M G, and Parshin, P P}
abstractNote = {A time-of-flight neutron inelastic scattering study of the lattice dynamics of Ba{sub 1-x}K{sub x}BiO{sub 3} for x=0.0 and x=0.4 has been performed for the temperatures 10 K, 80 K and 290 K. No temperature effects were found for the generalized phonon density of states. The phonon spectrum of a superconducting sample reveals less in number van Hove singularities and softens in comparison with that of the nonsuperconducting one. On the basis of the simple model for interatomic potential the lattice dynamics of this system was calculated. Some features of the structural phase diagram and the optical spectroscopy data were explained using this model. The calculated phonon density of states was found to be in good agreement with experiment. 36 refs.; 3 figs.}
place = {JINR}
year = {1991}
month = {Dec}
}
title = {Lattice dynamics of Ba{sub 1-x}K{sub x}BiO{sub 3} as studied by neutron scattering and computer simulation}
author = {Belushkin, A V, Vagov, A V, Zemlyanov, M G, and Parshin, P P}
abstractNote = {A time-of-flight neutron inelastic scattering study of the lattice dynamics of Ba{sub 1-x}K{sub x}BiO{sub 3} for x=0.0 and x=0.4 has been performed for the temperatures 10 K, 80 K and 290 K. No temperature effects were found for the generalized phonon density of states. The phonon spectrum of a superconducting sample reveals less in number van Hove singularities and softens in comparison with that of the nonsuperconducting one. On the basis of the simple model for interatomic potential the lattice dynamics of this system was calculated. Some features of the structural phase diagram and the optical spectroscopy data were explained using this model. The calculated phonon density of states was found to be in good agreement with experiment. 36 refs.; 3 figs.}
place = {JINR}
year = {1991}
month = {Dec}
}