Stretchable magneto-dielectric composites based on raspberry-shaped iron oxide nanostructures

M. Vural, O. Gerber, B. P. Pichon, S. Lemonnier, E. Barraud, L. C. Kempel, S. Begin-Colin, P. Kofinas

    Research output: Contribution to journalArticle

    • 1 Citations

    Abstract

    Stretchable magneto-dielectric composites were prepared using collectively assembled iron oxide nanostructures as fillers in an elastomer (polydimethylsiloxane) matrix. These raspberry-shaped nanostructures (RSNs), synthesized by a one-pot polyol solvothermal method, consist of oriented aggregates of iron oxide nanocrystals. The oriented aggregation of nanocrystals generates a large interface between nanograins significantly reducing their surface oxidation, improving crystal quality and preventing the formation of surface and volume spin canting. Therefore these iron oxide RSNs display low coercivity with enhanced saturation magnetization (MS). The use of such citrated RSN as filler material with improved magnetization and low coercivity allowed the fabrication of magneto-dielectric composites that can attain permeability values reaching 2.3 with magnetic loss values limited to 0.11. The resulting composites can also be stretched up to 155% strain before failure due to good adhesion between the elastomer and citrate capped RSNs. In addition, the composition of these fillers was altered to adjust the resonance frequency of the resulting composite material. Stretchable magneto-dielectric composites consisting of maghemite-rich RSNs and magnetite-rich RSNs demonstrated resonance frequencies similar to the spherical ferromagnetic resonance of maghemite and magnetite, respectively.

    Original languageEnglish (US)
    Pages (from-to)2345-2352
    Number of pages8
    JournalJournal of Materials Chemistry C
    Volume4
    Issue number12
    DOIs
    StatePublished - Mar 28 2016

    Profile

    Nanostructures
    Composite materials
    Iron oxides
    Fillers
    Magnetite
    Coercive force
    Elastomers
    Nanocrystals
    Edema Disease of Swine
    Nicarbazin
    Dextromethorphan
    Magnetic leakage
    Ferromagnetic resonance
    Polyols
    Polydimethylsiloxane
    Saturation magnetization
    Magnetization
    Adhesion
    Agglomeration
    Fabrication

    ASJC Scopus subject areas

    • Chemistry(all)
    • Materials Chemistry

    Cite this

    Vural, M., Gerber, O., Pichon, B. P., Lemonnier, S., Barraud, E., Kempel, L. C., ... Kofinas, P. (2016). Stretchable magneto-dielectric composites based on raspberry-shaped iron oxide nanostructures. Journal of Materials Chemistry C, 4(12), 2345-2352. DOI: 10.1039/c6tc00419a

    Stretchable magneto-dielectric composites based on raspberry-shaped iron oxide nanostructures. / Vural, M.; Gerber, O.; Pichon, B. P.; Lemonnier, S.; Barraud, E.; Kempel, L. C.; Begin-Colin, S.; Kofinas, P.

    In: Journal of Materials Chemistry C, Vol. 4, No. 12, 28.03.2016, p. 2345-2352.

    Research output: Contribution to journalArticle

    Vural, M, Gerber, O, Pichon, BP, Lemonnier, S, Barraud, E, Kempel, LC, Begin-Colin, S & Kofinas, P 2016, 'Stretchable magneto-dielectric composites based on raspberry-shaped iron oxide nanostructures' Journal of Materials Chemistry C, vol 4, no. 12, pp. 2345-2352. DOI: 10.1039/c6tc00419a
    Vural M, Gerber O, Pichon BP, Lemonnier S, Barraud E, Kempel LC et al. Stretchable magneto-dielectric composites based on raspberry-shaped iron oxide nanostructures. Journal of Materials Chemistry C. 2016 Mar 28;4(12):2345-2352. Available from, DOI: 10.1039/c6tc00419a

    Vural, M.; Gerber, O.; Pichon, B. P.; Lemonnier, S.; Barraud, E.; Kempel, L. C.; Begin-Colin, S.; Kofinas, P. / Stretchable magneto-dielectric composites based on raspberry-shaped iron oxide nanostructures.

    In: Journal of Materials Chemistry C, Vol. 4, No. 12, 28.03.2016, p. 2345-2352.

    Research output: Contribution to journalArticle

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