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

  • 2 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.

LanguageEnglish (US)
Pages2345-2352
Number of pages8
JournalJournal of Materials Chemistry C
Volume4
Issue number12
DOIs
StatePublished - Mar 28 2016

Profile

Iron oxides
Nanostructures
Composite materials
Ferrosoferric Oxide
Elastomers
Fillers
Magnetite
Coercive force
Nanocrystals
Magnetic leakage
Ferromagnetic resonance
Polyols
Polydimethylsiloxane
Saturation magnetization
ferric oxide
Citric Acid
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. 2016 ; Vol. 4, No. 12. pp. 2345-2352
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