Electric properties of MnZn ferrite/polyaniline composites: the implication of polyaniline morphology

Moučka, Robert; Kazantseva, Natalia E.; Sapurina, Irina

dc.title	Electric properties of MnZn ferrite/polyaniline composites: the implication of polyaniline morphology	en
dc.contributor.author	Moučka, Robert
dc.contributor.author	Kazantseva, Natalia E.
dc.contributor.author	Sapurina, Irina
dc.relation.ispartof	Journal of Materials Science
dc.identifier.issn	0022-2461 Scopus Sources, Sherpa/RoMEO, JCR
dc.date.issued	2018
utb.relation.volume	53
utb.relation.issue	3
dc.citation.spage	1995
dc.citation.epage	2004
dc.type	article
dc.language.iso	en
dc.publisher	Springer
dc.identifier.doi	10.1007/s10853-017-1620-6
dc.relation.uri	https://link.springer.com/article/10.1007/s10853-017-1620-6
dc.description.abstract	(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. © 2017, Springer Science+Business Media, LLC.	en
utb.faculty	University Institute
dc.identifier.uri	http://hdl.handle.net/10563/1007618
utb.identifier.obdid	43878221
utb.identifier.scopus	2-s2.0-85029904319
utb.identifier.wok	000415281400035
utb.identifier.coden	JMTSA
utb.source	j-scopus
dc.date.accessioned	2018-01-15T16:31:33Z
dc.date.available	2018-01-15T16:31:33Z
dc.description.sponsorship	LO1504, NPU, Northwestern Polytechnical University
dc.description.sponsorship	Ministry of Education, Youth and Sports of the Czech Republic-Program NPU I [LO1504]
utb.ou	Centre of Polymer Systems
utb.contributor.internalauthor	Moučka, Robert
utb.contributor.internalauthor	Kazantseva, Natalia E.
utb.fulltext.affiliation	R. Moučka1,*, N. Kazantseva1, and I. Sapurina2 1 Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, 76001 Zlín, Czech Republic 2 Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, Russia 199004 Address correspondence to E-mail: moucka@cps.utb.cz
utb.fulltext.dates	Received: 10 July 2017 Accepted: 20 September 2017 Published online: 26 September 2017
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utb.fulltext.sponsorship	This work was supported by the Ministry of Education, Youth and Sports of the Czech Republic—Program NPU I [LO1504].
utb.wos.affiliation	[Mouka, R.; Kazantseva, N.] Tomas Bata Univ Zlin, Univ Inst, Ctr Polymer Syst, Trida T Bati 5678, Zlin 76001, Czech Republic; [Sapurina, I.] Russian Acad Sci, Inst Macromol Cpds, St Petersburg 199004, Russia
utb.scopus.affiliation	Centre of Polymer Systems, University Institute, Tomas Bata University in Zlín, Trida T. Bati 5678, Zlín, Czech Republic; Institute of Macromolecular Compounds, Russian Academy of Sciences, St. Petersburg, Russian Federation
utb.fulltext.projects	LO1504