Core/Shell Iron/Oxide Nanoparticles for Improving the Magneto-Dielectric Properties of Polymer Composites

Ta I. Yang, Chun Yu Chuang, Shu Chian Yang, Leo C. Kempel, Peter Kofinas

    Research output: Research - peer-reviewArticle

    • 1 Citations

    Abstract

    A simple method to obtain high magnetic permeability (μr), high dielectric permittivity (εr), and low loss polymer composites with core/shell iron/metal oxide particles is developed. Magnetic iron (Fe0) particles with protective SiO2 shells are synthesized in aqueous environment at room temperature. The shells provide electrical insulting layers which decrease energy loss and also prevent the possibility of μr decrease due to Fe0 oxidation. Furthermore, Fe0 particles could also be coated with TiO2 shells which allow εr to be tuned. The εr and μr of the resulting polydimethylsiloxane composites are optimized for core-shell particle doping. The value of εr is up to 9.8 and most importantly, the μ is close to 2 at 1 GHz with 43 wt% doping of core-shell particles. The dielectric loss of the composites is less than 0.02.

    LanguageEnglish (US)
    Pages121-126
    Number of pages6
    JournalAdvanced Engineering Materials
    Volume18
    Issue number1
    DOIs
    StatePublished - Jan 1 2016

    Profile

    Iron oxides
    Dielectric properties
    Nanoparticles
    Composite materials
    Polymers
    ferric oxide
    iron oxides
    dielectric properties
    nanoparticles
    composite materials
    polymers
    Doping (additives)
    Iron
    Magnetic permeability
    Polydimethylsiloxane
    Dielectric losses
    Energy dissipation
    Permittivity
    Oxidation
    Oxides

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics

    Cite this

    Core/Shell Iron/Oxide Nanoparticles for Improving the Magneto-Dielectric Properties of Polymer Composites. / Yang, Ta I.; Chuang, Chun Yu; Yang, Shu Chian; Kempel, Leo C.; Kofinas, Peter.

    In: Advanced Engineering Materials, Vol. 18, No. 1, 01.01.2016, p. 121-126.

    Research output: Research - peer-reviewArticle

    Yang, Ta I. ; Chuang, Chun Yu ; Yang, Shu Chian ; Kempel, Leo C. ; Kofinas, Peter. / Core/Shell Iron/Oxide Nanoparticles for Improving the Magneto-Dielectric Properties of Polymer Composites. In: Advanced Engineering Materials. 2016 ; Vol. 18, No. 1. pp. 121-126
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