Počet záznamů: 1

Angular dispersion of oblique phonon modes in BiFeO.sub.3./sub. from micro-Raman scattering

  1. 1.
    0359003 - FZU-D 2012 RIV US eng J - Článek v odborném periodiku
    Hlinka, Jiří - Pokorný, Jan - Karimi, S. - Reaney, I. M.
    Angular dispersion of oblique phonon modes in BiFeO3 from micro-Raman scattering.
    Physical Review. B. Roč. 83, č. 2 (2011), "020101-1"-"020101-4" ISSN 1098-0121
    Grant CEP: GA ČR GAP204/10/0616
    Výzkumný záměr: CEZ:AV0Z10100520
    Klíčová slova: BiFeO3 * Raman scattering * phonon modes * multiferroic
    Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
    Impakt faktor: 3.691, rok: 2011
    http://link.aps.org/doi/10.1103/PhysRevB.83.020101

    The angular dispersion of oblique phonon modes in a multiferroic BiFeO3 has been obtained from a micro-Raman spectroscopic investigation of a coarse grain ceramic sample. Continuity of the measured angular dispersion curves allows conclusive identification of all pure zone-center polar modes. The metod employed here to reconstruct the anisotropic crystal property from a large set of independent local measurements on a macroscopically isotropic ceramic sample profits from the censiderable dispersion of the oblique modes in ferroelectric perovskites and it can be in principle conveniently applied to any other optically uniaxial ferroelectric material.
    Trvalý link: http://hdl.handle.net/11104/0196885