High-frequency dielectric spectroscopy of BaTiO3 core - silica shell nanocomposites: problem of interdiffusion

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F11%3A00368156" target="_blank" >RIV/68378271:_____/11:00368156 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1142/S2010135X11000367" target="_blank" >http://dx.doi.org/10.1142/S2010135X11000367</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1142/S2010135X11000367" target="_blank" >10.1142/S2010135X11000367</a>

Result language

angličtina

Original language name

High-frequency dielectric spectroscopy of BaTiO3 core - silica shell nanocomposites: problem of interdiffusion

Original language description

Three types of BaTiO3 core - amorphous nanoshell composite ceramics were processed from the same core-shell powder by standard sintering, spark-plasma sintering and two-step sintering techniques and characterized by XRD, HRSEM and broadband dielectric spectroscopy in the frequency range 103-1013 Hz including the THz and IR range. The samples differed by porosity and by the amount of interdiffusion from the cores to shells, in correlation with their increasing porosity. The dielectric spectra were also calculated using suitable models based on effective medium approximation. The measurements revealed a strong dielectric dispersion below the THz range, which cannot be explained by the modeling, and whose strength was in correlation with the degree of interdiffusion. It is assigned to an effect of the interdiffusion layers, giving rise to a strong interfacial polarization.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BM - Solid-state physics and magnetism

OECD FORD branch

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Project

<a href="/en/project/GA202%2F09%2F0430" target="_blank" >GA202/09/0430: Macroscopic properties of mesoscopically nonhomogeneous systems</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2011

Confidentiality

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

Name of the periodical

Journal of Advanced Dielectrics

ISSN

2010-135X

e-ISSN

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Volume of the periodical

1

Issue of the periodical within the volume

3

Country of publishing house

SG - SINGAPORE

Number of pages

9

Pages from-to

309-317

UT code for WoS article

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EID of the result in the Scopus database

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