Počet záznamů: 1

Geometric resonances in far-infrared reflectance spectra of PbTiO.sub.3./sub. ceramics

  1. 1.
    0365351 - FZU-D 2012 RIV US eng J - Článek v odborném periodiku
    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
    Grant CEP: GA ČR GAP204/10/0616; GA AV ČR KAN300100801
    Grant ostatní: MŚMT(CZ) SVV-2010-261303
    Výzkumný záměr: CEZ:AV0Z10100520
    Klíčová slova: geometrical resonance * ferroelectrics * phonons, ceramic materials
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 3.691, rok: 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).
    Trvalý link: http://hdl.handle.net/11104/0200611