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Description
  • Článek popisuje použití spektroskopických sond při studiu feroelektrik (cs)
  • 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  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  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.
  • 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  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  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. (en)
Title
  • Application of Spectroscopic Probes in Study of Ferroelectrics
  • Application of Spectroscopic Probes in Study of Ferroelectrics (en)
  • Použití spektroskopických sond při studiu feroelektrik (cs)
skos:prefLabel
  • Application of Spectroscopic Probes in Study of Ferroelectrics
  • Application of Spectroscopic Probes in Study of Ferroelectrics (en)
  • Použití spektroskopických sond při studiu feroelektrik (cs)
skos:notation
  • RIV/68407700:21340/04:04105309!RIV/2005/MSM/213405/N
http://linked.open.../vavai/riv/strany
  • 57 ; 64
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MSM 210000022)
http://linked.open...iv/cisloPeriodika
  • -
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 555183
http://linked.open...ai/riv/idVysledku
  • RIV/68407700:21340/04:04105309
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Photoluminescence; Zero-phonon-line (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • NL - Nizozemsko
http://linked.open...ontrolniKodProRIV
  • [8D2A4D2564D4]
http://linked.open...i/riv/nazevZdroje
  • Ferroelectrics
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 298
http://linked.open...iv/tvurceVysledku
  • Bryknar, Zdeněk
http://linked.open...n/vavai/riv/zamer
issn
  • 0015-0193
number of pages
http://localhost/t...ganizacniJednotka
  • 21340
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