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Magnetic materials based on manganese?zinc ferrite with surface organized polyaniline coating

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61389013%3A_____%2F06%3A00031340" target="_blank" >RIV/61389013:_____/06:00031340 - isvavai.cz</a>

  • Alternative codes found

    RIV/70883521:28110/06:63504634

  • Result on the web

  • DOI - Digital Object Identifier

Alternative languages

  • Result language

    angličtina

  • Original language name

    Magnetic materials based on manganese?zinc ferrite with surface organized polyaniline coating

  • Original language description

    Core?shell composites of manganese?zinc ferrite (MnZn) and polyaniline (PANI) have been prepared by the oxidation of aniline with ammonium peroxydisulfate in the presence of ferrite. The various reaction conditions allowed controlling the thickness of PANI coating, 50?250 nm. Complex magnetic permeability spectra of MnZn ferrite of various particles sizes, 25?250 .mu.m, and of their composites with PANI, have been studied in the frequency range 1 MHz?10 GHz. The formation of a polymer p-semiconducting nanolayer on the surface of a MnZn ferrite particle changes the character of the frequency dispersion of the permeability. The interfacial effects between MnZn ferrite and PANI nanofilm are responsible for the shifts of resonance frequency from MHz closerto GHz.

  • Czech name

    Magnetické materiály založené na feritech manganu a zinku s povrchově organizovaným polyanilinovým pokrytím

  • Czech description

    Komposity ferritu zinku a manganu s polyanilinem byly připraveny oxidací anilinu peroxydvojsíranem amonným v přítomnosti ferritu. Různé reakční podmínky umožnily řídit tloušťku pokrytí mezi 50?250 nm. Spektra komplexní magnetické permeability ferritu o zůzné velikosti částic, 25?250 .mu.m, a jejich kompositů s polyanilinem byly studovány ve frekvenčním rozsahu 1 MHz?10 GHz. Tvorba polymerní p-polovodivé nanovrstvy na povrchu částic ferritu mění chaarkter frekvenční disperse magnetické permeability. Mezifázové efekty mezi MnZn ferritem a polyanilinovým nanofilmem jsou odpovědné za posuny rezonančního kmitočtu z oblasti MHz do GHz.

Classification

  • Type

    J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

  • CEP classification

    BM - Solid-state physics and magnetism

  • OECD FORD branch

Result continuities

  • Project

    <a href="/en/project/IAA4050313" target="_blank" >IAA4050313: Conducting polymer nanofilms</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2006

  • 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 Magnetism and Magnetic Materials

  • ISSN

    0304-8853

  • e-ISSN

  • Volume of the periodical

    301

  • Issue of the periodical within the volume

    1

  • Country of publishing house

    NL - THE KINGDOM OF THE NETHERLANDS

  • Number of pages

    11

  • Pages from-to

    155-165

  • UT code for WoS article

  • EID of the result in the Scopus database