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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

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • 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

  • 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