Broadband dielectric spectroscopy of standard and core-shell BaTiO3-NiO ceramic composites compared to the BaTiO3 ceramics

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68378271%3A_____%2F16%3A00465087" target="_blank" >RIV/68378271:_____/16:00465087 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1080/00150193.2016.1215213" target="_blank" >http://dx.doi.org/10.1080/00150193.2016.1215213</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1080/00150193.2016.1215213" target="_blank" >10.1080/00150193.2016.1215213</a>

Result language

angličtina

Original language name

Broadband dielectric spectroscopy of standard and core-shell BaTiO3-NiO ceramic composites compared to the BaTiO3 ceramics

Original language description

Using SPS we have processed and studied two ceramic composites of 70 vol% BaTiO3 and 30 vol% NiO with different topologies: standard and core-shell composites. The materials were characterized by XRD and SEM and studied by quantitative broadband dielectric spectroscopy up to the infrared range using four different spectroscopic techniques in the 10-450 K temperature range. The spectra were fitted with the factorized dielectric function of generalized damped oscillators in the infrared-terahertz range and by a set of Cole-Cole relaxations at lower frequencies below the polar phonon frequency range. Using the dielectric functions of the BaTiO3 ceramics and NiO crystal, we modelled the effective dielectric functions of the composite using three models based on the effective medium approximation: Bruggeman, Lichtenecker and generalized brick model (coated spheres). Qualitative agreement between the experimental and modelled effective dielectric functions was obtained.n

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/GA15-08389S" target="_blank" >GA15-08389S: Dielectric and phonon spectroscopy of multiferroics</a><br>

Continuities

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year

2016

Confidentiality

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

Name of the periodical

Ferroelectrics

ISSN

0015-0193

e-ISSN

—

Volume of the periodical

500

Issue of the periodical within the volume

1

Country of publishing house

GB - UNITED KINGDOM

Number of pages

19

Pages from-to

1-19

UT code for WoS article

000386464100002

EID of the result in the Scopus database

2-s2.0-84991466230