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| Description
| - Common and hybrid magnetic polymer magnetic composites of the same volume loading (40 %) of magnetic component were prepared. Dielectric properties of matrix, common and hybrid composite materials were measured in a frequency range from 10 Hz to 100 kHz from -30°C up to 100°C. Data were transformed using electric modulus formalism (M*) and discussed from dielectric relaxation viewpoint and were fitted by Cole-Davidson model. The examined systems exhibit quite significant frequency dispersion which is strongly temperature dependent. AC conductivity plateaus and deformation of Cole-Cole plots indicates presence of DC conductivity which heavily masks relaxation mechanisms. In Cole-Cole plot of M* it is possible to recognize different relaxations in case of hybrid system. These are probably connected with interfacial polarization resulting from presence of two types of filler.
- Common and hybrid magnetic polymer magnetic composites of the same volume loading (40 %) of magnetic component were prepared. Dielectric properties of matrix, common and hybrid composite materials were measured in a frequency range from 10 Hz to 100 kHz from -30°C up to 100°C. Data were transformed using electric modulus formalism (M*) and discussed from dielectric relaxation viewpoint and were fitted by Cole-Davidson model. The examined systems exhibit quite significant frequency dispersion which is strongly temperature dependent. AC conductivity plateaus and deformation of Cole-Cole plots indicates presence of DC conductivity which heavily masks relaxation mechanisms. In Cole-Cole plot of M* it is possible to recognize different relaxations in case of hybrid system. These are probably connected with interfacial polarization resulting from presence of two types of filler. (en)
- Byly připraveny vzorky %22standardního%22 (obsahující pouze mag. plnivo) a hybridního magnetického kompozitu, obojí se stejným obsahem magnetické složky (40 obj. %). Pro výše zmiňované materiály (standardní, hybridní) a čistou polyuretanovou matrici byly stanoveny dielektrické vlastnosti ve frekvenčním rozsahu od 10 Hz do 100 kHz při teplotách od -30 do 100 °C. Po transformaci dat za použití elektrického formalismu byly určeny hlavní relaxační mechanismy, které byly dále aproximovány Coleovým Davidsonovým modelem. Studované systémy vykazují značnou frekvenční disperzi permitivity silně závislou na teplotě. Relaxační mechanismy jsou skryty signálem stejnosměrné vodivosti, kterou zejména při vyšších teplotách (nad 50°C) signalizuje plató oblast na grafech střídavé vodivosti. U hybridního systému byly pozorovány dvě relaxace na rozdíl od standardního magnetického kompozitu vykazujícího pouze jednu relaxační oblast. Jde patrně o projevy polarizace na rozhraní fází matrice-plnivo. (cs)
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| Title
| - Dielectric properties of magnetic polymer composites
- Dielectric properties of magnetic polymer composites (en)
- Dielektrické vlastnosti magnetických polymerních kompozitů (cs)
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| skos:prefLabel
| - Dielectric properties of magnetic polymer composites
- Dielectric properties of magnetic polymer composites (en)
- Dielektrické vlastnosti magnetických polymerních kompozitů (cs)
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| skos:notation
| - RIV/70883521:28110/07:63505394!RIV08-MSM-28110___
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| http://linked.open.../vavai/riv/strany
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| http://linked.open...avai/riv/aktivita
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| http://linked.open...avai/riv/aktivity
| - P(ME 883), Z(MSM7088352101)
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| http://linked.open...vai/riv/dodaniDat
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| http://linked.open...aciTvurceVysledku
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| http://linked.open.../riv/druhVysledku
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| http://linked.open...iv/duvernostUdaju
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| http://linked.open...titaPredkladatele
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| http://linked.open...dnocenehoVysledku
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| http://linked.open...ai/riv/idVysledku
| - RIV/70883521:28110/07:63505394
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| http://linked.open...riv/jazykVysledku
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| http://linked.open.../riv/klicovaSlova
| - dielectric properties; composite; ferrite; permittivity; MWS polarization (en)
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| http://linked.open.../riv/klicoveSlovo
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| http://linked.open...ontrolniKodProRIV
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| http://linked.open...i/riv/mistoVydani
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| http://linked.open...i/riv/nazevZdroje
| - 1st Bratislava Young Polymer Scientists workshop (BYPoS 2007)
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| http://linked.open...in/vavai/riv/obor
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| http://linked.open...ichTvurcuVysledku
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| http://linked.open...cetTvurcuVysledku
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| http://linked.open...vavai/riv/projekt
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| http://linked.open...UplatneniVysledku
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| http://linked.open...iv/tvurceVysledku
| - Kazantseva, Natalia
- Moučka, Robert
- Omastová, Mária
- Vilčáková, Jarmila
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| http://linked.open...n/vavai/riv/zamer
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| number of pages
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| http://purl.org/ne...btex#hasPublisher
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| https://schema.org/isbn
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| http://localhost/t...ganizacniJednotka
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