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Geometric resonances in far-infrared reflectance spectra of PbTiO.sub.3./sub. ceramics
- 1.0365351 - FZÚ 2012 RIV US eng J - Journal Article
Hlinka, Jiří - Simon, Elizabeth - Bogicevic, C. - Karolak, F. - Janolin, P.-E.
Geometric resonances in far-infrared reflectance spectra of PbTiO3 ceramics.
Physical Review. B. Roč. 84, č. 9 (2011), 092104/1-092104/4. ISSN 1098-0121
R&D Projects: GA ČR GAP204/10/0616; GA AV ČR KAN300100801
Grant - others:MŚMT(CZ) SVV-2010-261303
Institutional research plan: CEZ:AV0Z10100520
Keywords : geometrical resonance * ferroelectrics * phonons, ceramic materials
Subject RIV: BM - Solid Matter Physics ; Magnetism
Impact factor: 3.691, year: 2011
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).
Permanent Link: http://hdl.handle.net/11104/0200611
Number of the records: 1