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

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Description
  • Polykrystalický MnZn ferit byl pokryt polyanilínem (PANI) a zamíchán do polyuretanové matrice. Komplexní permeabilita kompozitů byla studována ve frekvenčním rozsahu 1 MHz - 3GHz. Vodivost PANI povlaku byla řízena protonací kyseliny pikrové. Velké změny posunu frekvenční rezonance byly sledovány v závislosti na měnící se vodivosti PANI. Změny magnetických vlastností kompozitních materiálů jsou způsobeny změnou hraničních podmínek mikrovlnového pole na rozhraní mezi částicí feritu a polymerní matricí. Tento efekt byl sledován speciálně u feritů s nízkou magnetickou anizotropií. (cs)
  • Polycrystalline manganese#zinc ferrite has been coated with polyaniline (PANI) 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 (PANI) 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)
Title
  • Magnetic behaviour of composites containing polyaniline-coated manganese-zinc ferrite.
  • Magnetic behaviour of composites containing polyaniline-coated manganese-zinc ferrite. (en)
  • Magnetické chování Mn-Zn feritů pokrytých polyanilínem. (cs)
skos:prefLabel
  • Magnetic behaviour of composites containing polyaniline-coated manganese-zinc ferrite.
  • Magnetic behaviour of composites containing polyaniline-coated manganese-zinc ferrite. (en)
  • Magnetické chování Mn-Zn feritů pokrytých polyanilínem. (cs)
skos:notation
  • RIV/70883521:28110/04:63502542!RIV/2005/MSM/281105/N
http://linked.open.../vavai/riv/strany
  • 30-37
http://linked.open...avai/riv/aktivita
http://linked.open...avai/riv/aktivity
  • Z(MSM 265200015)
http://linked.open...iv/cisloPeriodika
  • 269
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
  • 572001
http://linked.open...ai/riv/idVysledku
  • RIV/70883521:28110/04:63502542
http://linked.open...riv/jazykVysledku
http://linked.open.../riv/klicovaSlova
  • Polyaniline base; Surface coating; Polycrystalline Mn-Zn ferrite; Polyurethane matrix; Resonance frequency; Complex permeability; Polymer composites (en)
http://linked.open.../riv/klicoveSlovo
http://linked.open...odStatuVydavatele
  • GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV
  • [BCC05FA4E8ED]
http://linked.open...i/riv/nazevZdroje
  • Journal of Magnetism and Magnetic Material
http://linked.open...in/vavai/riv/obor
http://linked.open...ichTvurcuVysledku
http://linked.open...cetTvurcuVysledku
http://linked.open...UplatneniVysledku
http://linked.open...iv/tvurceVysledku
  • Stejskal, Jaroslav
  • Sáha, Petr
  • Kazantseva, Natalia
  • Sapurina, Irina
  • Vilčáková, Jarmila
  • Křesálek, Vojtěch
http://linked.open...n/vavai/riv/zamer
issn
  • 0304-8853
number of pages
http://localhost/t...ganizacniJednotka
  • 28110
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