On the electric and magnetic alignment of magnetoactive barium hexaferrite-PDMS composites

Md Abdulla Al Masud, Corey Breznak, Paris Von Lockette, Zoubeida Ounaies

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

This study demonstrates how to judiciously use two different external fields to engineer a polymer-based composite that responds to both electric and magnetic fields. Specifically, we demonstrate the electric and magnetic alignment of M-type Barium Hexaferrite (BF) in polydimithylsiloxane (PDMS) to obtain a multifunctional composite whose electrical and magnetic properties depend on the orientation of the BF. First, the BFs are electrically aligned in the polymer matrices by applying an AC electric field. From optical microscopy (OM) imaging, the optimal electrical alignment conditions are determined, and those parameters are used to fabricate the composites. After the composite is electrically aligned and partially cured, magnetic field is then applied. Under the magnetic field, BFs are further aligned in-plane and out-of-plane along their magnetic c-axis within the chains that formed during electrical aligning. Following complete cure, the microstructures from the OM image show parallel chain formation. Vibrating Sample Magnetometry (VSM) and XRD results confirm BFs are crystallographically aligned along their magnetic c-axis. The textured BF-PDMS composites are found to have anisotropic magnetic and dielectric properties. The possibility of electrical alignment of magnetic particles will open up new doors to manipulate and design particle-modified polymers for different applications.

Original languageEnglish (US)
Title of host publicationBehavior and Mechanics of Multifunctional Materials and Composites 2017
EditorsNakhiah C. Goulbourne
PublisherSPIE
ISBN (Electronic)9781510608153
DOIs
StatePublished - Jan 1 2017
EventBehavior and Mechanics of Multifunctional Materials and Composites 2017 - Portland, United States
Duration: Mar 26 2017Mar 28 2017

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume10165
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Other

OtherBehavior and Mechanics of Multifunctional Materials and Composites 2017
CountryUnited States
CityPortland
Period3/26/173/28/17

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

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  • Cite this

    Al Masud, M. A., Breznak, C., Von Lockette, P., & Ounaies, Z. (2017). On the electric and magnetic alignment of magnetoactive barium hexaferrite-PDMS composites. In N. C. Goulbourne (Ed.), Behavior and Mechanics of Multifunctional Materials and Composites 2017 [1016513] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 10165). SPIE. https://doi.org/10.1117/12.2263607