About: Magnetic behaviour of composites containing polyaniline-coated mangasene-zinc ferrite     Goto   Sponge   NotDistinct   Permalink

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Description
  • Polycrystalline manganese-zinc ferrite has been coated with polyaniline and embedded into a polyurethane matrix. The complex permeability of the composites was studied in the frequency range 1 mHz-3 GHz. The conductivity of PANI coating was adjusted by controlled protonation with picric acid. Large shifts in the resonance frequency were observed as a function of varying PANI conductivity. The changes in the magnetic properties of the PANI-coated composite material are due to the change of the boundary conditions of the microwave field at the interface between the ferrite particle and polymer matrix. This effect is observed especially when the magnetic anisotropy of ferrite is low.
  • Polycrystalline manganese-zinc ferrite has been coated with polyaniline and embedded into a polyurethane matrix. The complex permeability of the composites was studied in the frequency range 1 mHz-3 GHz. The conductivity of PANI coating was adjusted by controlled protonation with picric acid. Large shifts in the resonance frequency were observed as a function of varying PANI conductivity. The changes in the magnetic properties of the PANI-coated composite material are due to the change of the boundary conditions of the microwave field at the interface between the ferrite particle and polymer matrix. This effect is observed especially when the magnetic anisotropy of ferrite is low. (en)
  • Polykrystalické manganato-zinečnaté ferity byly potaženy polyanilínem a zapuštěny do polyurethanové matrice. Komplexní permeabilita kompozitu byla studována ve frekvenčním rozsahu 1mHz-3 GHz. Vodivost povlaku PANI byla nastavena řízenou protonací kyselinou pikrovou. Veliké posuny v rezonanční frekvenci byly pozorovány jako funkce měnící se PANI vodivosti. Změny v magnetických vlastnostech PANI-potažených kompozitních materiálů jsou způsobeny změnou v hraničních podmínkách mikrovlnného pole na rozhraní mezi feritovou částicí a polymerní matricí. Efekt je obzvláště pozorován, když magnetická anizotropie ferita je nízká. (cs)
Title
  • Magnetic behaviour of composites containing polyaniline-coated mangasene-zinc ferrite
  • Magnetic behaviour of composites containing polyaniline-coated mangasene-zinc ferrite (en)
  • Magnetické chování kompozitů obsahujících manganato-zinečnaté ferity potažené polyanilínem (cs)
skos:prefLabel
  • Magnetic behaviour of composites containing polyaniline-coated mangasene-zinc ferrite
  • Magnetic behaviour of composites containing polyaniline-coated mangasene-zinc ferrite (en)
  • Magnetické chování kompozitů obsahujících manganato-zinečnaté ferity potažené polyanilínem (cs)
skos:notation
  • RIV/61389013:_____/04:00101525!RIV/2005/MSM/A55005/N
http://linked.open.../vavai/riv/strany
  • 30;37
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • P(IAA4050313), P(ME 539), Z(AV0Z4050913)
http://linked.open...iv/cisloPeriodika
  • 1
http://linked.open...vai/riv/dodaniDat
http://linked.open...aciTvurceVysledku
http://linked.open.../riv/druhVysledku
http://linked.open...iv/duvernostUdaju
http://linked.open...titaPredkladatele
http://linked.open...dnocenehoVysledku
  • 572002
http://linked.open...ai/riv/idVysledku
  • RIV/61389013:_____/04:00101525
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • ferrite;permeability;coated particles (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • NL - Nizozemsko
http://linked.open...ontrolniKodProRIV
  • [6B0D3452F456]
http://linked.open...i/riv/nazevZdroje
  • Journal of Magnetism and Magnetic Materials
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...vavai/riv/projekt
http://linked.open...UplatneniVysledku
http://linked.open...v/svazekPeriodika
  • 269
http://linked.open...iv/tvurceVysledku
  • Stejskal, Jaroslav
  • Sáha, P.
  • Sapurina, I.
  • Kazantseva, N. E.
  • Vilčáková, J.
  • Křesálek, V.
http://linked.open...n/vavai/riv/zamer
issn
  • 0304-8853
number of pages
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