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Geometric resonances in far-infrared reflectance spectra of PbTiO.sub.3./sub. ceramics
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SYSNO ASEP 0365351 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Geometric resonances in far-infrared reflectance spectra of PbTiO3 ceramics Author(s) Hlinka, Jiří (FZU-D) RID, ORCID
Simon, Elizabeth (FZU-D)
Bogicevic, C. (FR)
Karolak, F. (FR)
Janolin, P.-E. (FR)Source Title Physical Review. B - ISSN 1098-0121
Roč. 84, č. 9 (2011), 092104/1-092104/4Number of pages 4 s. Language eng - English Country US - United States Keywords geometrical resonance ; ferroelectrics ; phonons, ceramic materials Subject RIV BM - Solid Matter Physics ; Magnetism R&D Projects GAP204/10/0616 GA ČR - Czech Science Foundation (CSF) KAN300100801 GA AV ČR - Academy of Sciences of the Czech Republic (AV ČR) CEZ AV0Z10100520 - FZU-D (2005-2011) UT WOS 000294920500001 DOI 10.1103/PhysRevB.84.092104 Annotation The complex dielectric permittivity of PbTiO3 ceramics in the THz frequency range has been investigated theoretically and by a far-infrared reflectance technique. Besides the well-known polar modes of bulk PbTiO3, the experiment reveals several additional modes identified as geometrical resonances (i.e., extraneous hybrid excitations created by inhomogeneous depolarization fields). Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2012
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