. "Dielektrick\u00E9 vlastnosti magnetick\u00FDch polymern\u00EDch kompozit\u016F"@cs . . "28110" . "1"^^ . "RIV/70883521:28110/07:63505394" . . . . "Vil\u010D\u00E1kov\u00E1, Jarmila" . . "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\u00B0C up to 100\u00B0C. 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 . . . . "Mou\u010Dka, Robert" . "P(ME 883), Z(MSM7088352101)" . "Dielectric properties of magnetic polymer composites"@en . "1st Bratislava Young Polymer Scientists workshop (BYPoS 2007)" . . "Bratislava" . "Omastov\u00E1, M\u00E1ria" . "Kazantseva, Natalia" . . "417198" . "[CF59403E51F7]" . "3"^^ . "Dielectric properties of magnetic polymer composites"@en . "4"^^ . "RIV/70883521:28110/07:63505394!RIV08-MSM-28110___" . "Dielectric properties of magnetic polymer composites" . "Dielektrick\u00E9 vlastnosti magnetick\u00FDch polymern\u00EDch kompozit\u016F"@cs . . . "\u00DAstav polym\u00E9rov SAV" . "dielectric properties; composite; ferrite; permittivity; MWS polarization"@en . . . . "Dielectric properties of magnetic polymer composites" . "978-80-968433-4-3" . "59-59" . . "Byly p\u0159ipraveny vzorky %22standardn\u00EDho%22 (obsahuj\u00EDc\u00ED pouze mag. plnivo) a hybridn\u00EDho magnetick\u00E9ho kompozitu, oboj\u00ED se stejn\u00FDm obsahem magnetick\u00E9 slo\u017Eky (40 obj. %). Pro v\u00FD\u0161e zmi\u0148ovan\u00E9 materi\u00E1ly (standardn\u00ED, hybridn\u00ED) a \u010Distou polyuretanovou matrici byly stanoveny dielektrick\u00E9 vlastnosti ve frekven\u010Dn\u00EDm rozsahu od 10 Hz do 100 kHz p\u0159i teplot\u00E1ch od -30 do 100 \u00B0C. Po transformaci dat za pou\u017Eit\u00ED elektrick\u00E9ho formalismu byly ur\u010Deny hlavn\u00ED relaxa\u010Dn\u00ED mechanismy, kter\u00E9 byly d\u00E1le aproximov\u00E1ny Coleov\u00FDm Davidsonov\u00FDm modelem. Studovan\u00E9 syst\u00E9my vykazuj\u00ED zna\u010Dnou frekven\u010Dn\u00ED disperzi permitivity siln\u011B z\u00E1vislou na teplot\u011B. Relaxa\u010Dn\u00ED mechanismy jsou skryty sign\u00E1lem stejnosm\u011Brn\u00E9 vodivosti, kterou zejm\u00E9na p\u0159i vy\u0161\u0161\u00EDch teplot\u00E1ch (nad 50\u00B0C) signalizuje plat\u00F3 oblast na grafech st\u0159\u00EDdav\u00E9 vodivosti. U hybridn\u00EDho syst\u00E9mu byly pozorov\u00E1ny dv\u011B relaxace na rozd\u00EDl od standardn\u00EDho magnetick\u00E9ho kompozitu vykazuj\u00EDc\u00EDho pouze jednu relaxa\u010Dn\u00ED oblast. Jde patrn\u011B o projevy polarizace na rozhran\u00ED f\u00E1z\u00ED matrice-plnivo."@cs . . . . "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\u00B0C up to 100\u00B0C. 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." . "Kazantseva, Natalia" .