THz and IR dielectric response of BaTiO3 core-shell composites: evidence for interdiffusion
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F09%3A00330281" target="_blank" >RIV/68378271:_____/09:00330281 - isvavai.cz</a>
Result on the web
—
DOI - Digital Object Identifier
—
Alternative languages
Result language
angličtina
Original language name
THz and IR dielectric response of BaTiO3 core-shell composites: evidence for interdiffusion
Original language 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 andelectric-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.
Czech name
—
Czech description
—
Classification
Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
BM - Solid-state physics and magnetism
OECD FORD branch
—
Result continuities
Project
<a href="/en/project/KJB100100704" target="_blank" >KJB100100704: Size effect in ferroelectrics</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)
Others
Publication year
2009
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Journal of Physics D-Applied Physics
ISSN
0022-3727
e-ISSN
—
Volume of the periodical
42
Issue of the periodical within the volume
15
Country of publishing house
GB - UNITED KINGDOM
Number of pages
8
Pages from-to
—
UT code for WoS article
000268042200036
EID of the result in the Scopus database
—