Foam-derived multiferroic BiFeO3 nanoparticles and integration into transparent polymer nanocomposites

Research output: Contribution to journalResearch articleContributedpeer-review

Contributors

  • Sebastian Wohlrab - , TUD Dresden University of Technology (Author)
  • Hongchu Du - , TUD Dresden University of Technology (Author)
  • Margarita Weiss - , TUD Dresden University of Technology (Author)
  • Stefan Kaskel - , Chair of Inorganic Chemistry I (Author)

Abstract

Transparent BiFeO3/PMMA (PMMA = poly(methyl methacrylate)) nanocomposites with a thickness up to 40 μm are obtained via solution film casting of BiFeO3 nanoparticle dispersions. The multiferroic BiFeO3 nanoparticles are obtained in a space confined crystallisation process in a porous carbon matrix and subsequent removal of the matrix. The average crystallite size ranges from 46 nm to 106 nm for materials synthesised at 803 K and 903 K respectively, but, at higher temperature, significant amounts of side products are detected by means of X-ray powder diffraction. The nanoparticles are multiferroic with a magnetic coercivity of 1.88 A m-1 at 400 K and a polarisation of up to 1.04 μC/cm2 at 65 kV/cm (298 K). Surface functionalisation using oleic acid allows the integration into PMMA films with a high transmittance.

Details

Original languageEnglish
Pages (from-to)1-15
Number of pages15
Journal Journal of experimental nanoscience
Volume3
Issue number1
Publication statusPublished - 16 May 2008
Peer-reviewedYes

Keywords

Keywords

  • BiFeO, Multiferroic, Nanocomposite, Nanoparticles