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Pis'ma v Zhurnal Èksperimental'noi i Teoreticheskoi Fiziki, 2004, Volume 80, Issue 5, Pages 403–407 (Mi jetpl2111)  
This article is cited in 5 scientific papers (total in 5 papers)

CONDENSED MATTER

Dynamics of cubic-tetragonal phase transition in KNbO$_3$ perovskite

S. N. Gvasaliyaab, B. Roesslia, R. A. Cowleyc, S. G. Lushnikovb, A. Choubeyd, P. Günterd

a Laboratory for Neutron Scattering ETHZ, Paul Scherrer Institut CH-5232 Villigen PSI Switzerland
b Ioffe Physical Technical Institute, 194021, St. Petersburg, Russia
c Clarendon Laboratory, Oxford University
d Nonlinear Optics Laboratory, ETH Hönggerberg, CH-8093 Z\"urich, Switzerland
Full-text PDF (378 kB) Citations (5)
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Abstract: The low-energy part of the vibration spectrum in KNbO$_3$ was studied by cold neutron inelastic scattering in the cubic phase. In addition to acoustic phonons, we observe strong diffuse scattering, which consists of two components. The first one is quasi-static and has a temperature-independent intensity. The second component appears as quasi-elastic scattering in the neutron spectrum indicating a dynamic origin. From analysis of the inelastic data we conclude that the quasi-elastic component and the acoustic phonon are mutually coupled. The susceptibility associated with the quasi-elastic component grows as the temperature approaches $T_C$.
Received: 27.07.2004
English version:
Journal of Experimental and Theoretical Physics Letters, 2004, Volume 80, Issue 5, Pages 355–358
DOI: https://doi.org/10.1134/1.1825122
Bibliographic databases:
Document Type: Article
PACS: 61.12.-q, 63.50.+x, 64.60.-i, 77.80.-e
Language: English
Citation: S. N. Gvasaliya, B. Roessli, R. A. Cowley, S. G. Lushnikov, A. Choubey, P. Günter, “Dynamics of cubic-tetragonal phase transition in KNbO$_3$ perovskite”, Pis'ma v Zh. Èksper. Teoret. Fiz., 80:5 (2004), 403–407; JETP Letters, 80:5 (2004), 355–358
Citation in format AMSBIB
\Bibitem{GvaRoeCow04}
\by S.~N.~Gvasaliya, B.~Roessli, R.~A.~Cowley, S.~G.~Lushnikov, A.~Choubey, P.~G\"unter
\paper Dynamics of cubic-tetragonal phase transition in KNbO$_3$ perovskite
\jour Pis'ma v Zh. \`Eksper. Teoret. Fiz.
\yr 2004
\vol 80
\issue 5
\pages 403--407
\mathnet{http://mi.mathnet.ru/jetpl2111}
\adsnasa{https://adsabs.harvard.edu/cgi-bin/bib_query?2004JETPL..80..355G}
\transl
\jour JETP Letters
\yr 2004
\vol 80
\issue 5
\pages 355--358
\crossref{https://doi.org/10.1134/1.1825122}
\scopus{https://www.scopus.com/record/display.url?origin=inward&eid=2-s2.0-20444475335}
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    • This publication is cited in the following 5 articles:
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    		Письма в Журнал экспериментальной и теоретической физики Pis'ma v Zhurnal Иksperimental'noi i Teoreticheskoi Fiziki
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