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Application of Spectroscopic Probes in Study of Ferroelectrics

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21340%2F03%3A04092927" target="_blank" >RIV/68407700:21340/03:04092927 - isvavai.cz</a>

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Application of Spectroscopic Probes in Study of Ferroelectrics

  • Original language description

    Photoluminescence (PL), thermally stimulated luminescence (TSL), and photosensitivity of SrTiO3 and Cd2Nb2O7 crystals with Mn4+ and Cr3+ spectroscopic probes, respectively, were studied. Manganese doping of SrTiO3 results in structured luminescence of Mn4+ consisting of narrow zero-phonon (ZPL) R- line (2E r 4A2) and vibrational sidebands. It is suggested that unusually large temperature shift of ZPL is caused mainly by the contribution of the lowest TO soft optical branch into interaction of emitting center with a lattice. The PL spectrum of Cd2Nb2O7:Cr3+ consists of four narrow emission lines accompanied by vibrational sidebands. Emission lines are attributed to the zero-phonon transitions 2E r 4A2 of two kinds of octahedral coordinated Cr3+ centers.The change in activation energies of PL thermal quenching at Tc = 196 K is tentatively explained by a change of the adiabatic potential of the Cr3+ centers at the ferroelectric phase transition of Cd2Nb2O7 at Tc.

  • Czech name

  • Czech description

Classification

  • Type

    D - Article in proceedings

  • CEP classification

    BM - Solid-state physics and magnetism

  • OECD FORD branch

Result continuities

  • Project

  • Continuities

    Z - Vyzkumny zamer (s odkazem do CEZ)

Others

  • Publication year

    2003

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Article name in the collection

    NATO Advanced Research Workshop on the Disordered Ferroelectrics

  • ISBN

  • ISSN

  • e-ISSN

  • Number of pages

    1

  • Pages from-to

    48-48

  • Publisher name

    Institute of Problems of Material Science NAS of Ukraine

  • Place of publication

    Kyjev

  • Event location

    Kyjev

  • Event date

    May 29, 2003

  • Type of event by nationality

    WRD - Celosvětová akce

  • UT code for WoS article