Electric properties of MnZn ferrite/polyaniline composites: the implication of polyaniline morphology
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F70883521%3A28110%2F18%3A63518921" target="_blank" >RIV/70883521:28110/18:63518921 - isvavai.cz</a>
Alternative codes found
RIV/70883521:28610/18:63518921
Result on the web
<a href="http://dx.doi.org/10.1007/s10853-017-1620-6" target="_blank" >http://dx.doi.org/10.1007/s10853-017-1620-6</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s10853-017-1620-6" target="_blank" >10.1007/s10853-017-1620-6</a>
Alternative languages
Result language
angličtina
Original language name
Electric properties of MnZn ferrite/polyaniline composites: the implication of polyaniline morphology
Original language description
(Di)electric properties of MnZn ferrite particles coated by conductive (emeraldine salt) and non-conductive (emeraldine base) forms of PANi were measured and discussed in relation to properties of individual components of such composite. The electric response in a wide frequency (0.1 Hz–10 MHz) and temperature (−150 to 100 °C) range was determined. Recorded relaxation processes were identified as a result of hopping charge carriers, which either only polarize or give rise to DC conductivity. Temperature dependence of conductivity modelled by variable range hopping model indicated different system dimensionality: 3D in PANi bulk and 1D in PANi film, that is result of PANi morphology variation. AC conductivity frequency spectra were well approximated by power law model, and temperature evolution of its exponent was related to the type of charge involved in the charge transport. Altogether, the overlayer of conductive PANi increases by two orders of magnitude the electrical conductivity of ferrite/PANi composite compared to pristine ferrite, whereas non-conductive PANi reduced it by three orders of magnitude. Therefore, the electrical properties of ferrite/PANi composites are determined by electrical properties of PANi, which in turn depend upon mesoscale charge transport in PANi.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10404 - Polymer science
Result continuities
Project
<a href="/en/project/LO1504" target="_blank" >LO1504: Centre of Polymer Systems Plus</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
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 Materials Science
ISSN
0022-2461
e-ISSN
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Volume of the periodical
53
Issue of the periodical within the volume
3
Country of publishing house
US - UNITED STATES
Number of pages
10
Pages from-to
1995-2004
UT code for WoS article
000415281400035
EID of the result in the Scopus database
2-s2.0-85029904319