On styrene-butadiene-styrene-barium ferrite nanocomposites

M. Chipara, D. Hui, J. Sankar, D. Leslie-Pelecky, A. Bender, L. Yue, R. Skomski, D. J. Sellmyer

Research output: Contribution to journalArticle

14 Scopus citations

Abstract

Magnetic investigations on a nanocomposite material obtained by spinning solutions of styrene - butadiene - styrene block copolymer containing barium ferrite nanoparticles onto Si wafers are reported. The effect of the spinning frequency on the magnetic features is discussed. It is observed that the magnetization at saturation is decreased as the spinning frequency is increased as the centrifuge force removes the magnetic nanoparticles from the solution. This is supported by the derivative of the hysteresis loops, which show two components, one with a high coercive field and another with a small coercive field. Increasing the spinning frequency increases the weight of the low coercive field component. The anisotropy in the distribution of magnetic nanoparticles, triggered eventually by the self-assembly capabilities of the matrix, is revealed by the difference between the coercive field in parallel and perpendicular configuration. It is noticed that increasing the spinning frequency enhances this difference. The effect of annealing the nanocomposite films is discussed.

Original languageEnglish (US)
Pages (from-to)235-243
Number of pages9
JournalComposites Part B: Engineering
Volume35
Issue number3
DOIs
StatePublished - Jan 1 2004

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Keywords

  • Annealing
  • Block coplymer
  • Magnetization
  • Nanoparticle

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering

Cite this

Chipara, M., Hui, D., Sankar, J., Leslie-Pelecky, D., Bender, A., Yue, L., Skomski, R., & Sellmyer, D. J. (2004). On styrene-butadiene-styrene-barium ferrite nanocomposites. Composites Part B: Engineering, 35(3), 235-243. https://doi.org/10.1016/S1359-8368(03)00054-4