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Statements

Subject Item
n2:RIV%2F68378271%3A_____%2F09%3A00330281%21RIV10-AV0-68378271
rdf:type
skos:Concept n17:Vysledek
dcterms:description
Time-domain THz transmission and FTIR reflectivity spectra of dense core–shell composites of the BaZr0.2Ti0.8O3, BaZr0.4Ti0.6O3, Ba0.66Sr0.34TiO3 and Ba0.45Sr0.55TiO3 compositions were studied in a broad temperature range of 10-900 K. The spectra were evaluated to obtain the complex dielectric functions and at room temperature they were compared with the prediction of the generalized brick-wall model based on the effective medium approximation. The model was analysed concerning the dielectric losses and electric-field tunability below the polar phonon frequency range. Whereas the predicted losses are much reduced compared with those of the cores, the observed enhanced losses in the THz range give evidence of an interdiffusion of the BaTiO3 cores into the shells. Time-domain THz transmission and FTIR reflectivity spectra of dense core–shell composites of the BaZr0.2Ti0.8O3, BaZr0.4Ti0.6O3, Ba0.66Sr0.34TiO3 and Ba0.45Sr0.55TiO3 compositions were studied in a broad temperature range of 10-900 K. The spectra were evaluated to obtain the complex dielectric functions and at room temperature they were compared with the prediction of the generalized brick-wall model based on the effective medium approximation. The model was analysed concerning the dielectric losses and electric-field tunability below the polar phonon frequency range. Whereas the predicted losses are much reduced compared with those of the cores, the observed enhanced losses in the THz range give evidence of an interdiffusion of the BaTiO3 cores into the shells.
dcterms:title
THz and IR dielectric response of BaTiO3 core-shell composites: evidence for interdiffusion THz and IR dielectric response of BaTiO3 core-shell composites: evidence for interdiffusion
skos:prefLabel
THz and IR dielectric response of BaTiO3 core-shell composites: evidence for interdiffusion THz and IR dielectric response of BaTiO3 core-shell composites: evidence for interdiffusion
skos:notation
RIV/68378271:_____/09:00330281!RIV10-AV0-68378271
n4:aktivita
n7:Z n7:P
n4:aktivity
P(KJB100100704), Z(AV0Z10100520)
n4:cisloPeriodika
15
n4:dodaniDat
n12:2010
n4:domaciTvurceVysledku
n10:8154724 n10:3635031 n10:6699189
n4:druhVysledku
n13:J
n4:duvernostUdaju
n6:S
n4:entitaPredkladatele
n8:predkladatel
n4:idSjednocenehoVysledku
346320
n4:idVysledku
RIV/68378271:_____/09:00330281
n4:jazykVysledku
n14:eng
n4:klicovaSlova
THz and IR spectroscopy; core-shell; effective medium approximation; dielectric response
n4:klicoveSlovo
n5:core-shell n5:dielectric%20response n5:effective%20medium%20approximation n5:THz%20and%20IR%20spectroscopy
n4:kodStatuVydavatele
GB - Spojené království Velké Británie a Severního Irska
n4:kontrolniKodProRIV
[4D3144B08891]
n4:nazevZdroje
Journal of Physics D-Applied Physics
n4:obor
n15:BM
n4:pocetDomacichTvurcuVysledku
3
n4:pocetTvurcuVysledku
6
n4:projekt
n16:KJB100100704
n4:rokUplatneniVysledku
n12:2009
n4:svazekPeriodika
42
n4:tvurceVysledku
Nuzhnyy, Dmitry Buscaglia, M. T. Rychetský, Ivan Petzelt, Jan Buscaglia, V. Nanni, P.
n4:wos
000268042200036
n4:zamer
n18:AV0Z10100520
s:issn
0022-3727
s:numberOfPages
8