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

Md Abdulla Al Masud, Corey Breznak, Paris R. Vonlockette, Zoubeida Ounaies

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

3 Citations (Scopus)

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
Volume10165
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

Other

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

Fingerprint

Barium
barium
Alignment
alignment
Composite
composite materials
Composite materials
Polymers
Magnetic Field
Magnetic Properties
Magnetic fields
Microscopy
Optical microscopy
Electric Field
Magnetic properties
polymers
Electric fields
magnetic fields
magnetic properties
microscopy

All Science Journal Classification (ASJC) codes

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

Cite this

Al Masud, M. A., Breznak, C., Vonlockette, P. R., & 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 (Vol. 10165). [1016513] SPIE. https://doi.org/10.1117/12.2263607
Al Masud, Md Abdulla ; Breznak, Corey ; Vonlockette, Paris R. ; Ounaies, Zoubeida. / On the electric and magnetic alignment of magnetoactive barium hexaferrite-PDMS composites. Behavior and Mechanics of Multifunctional Materials and Composites 2017. editor / Nakhiah C. Goulbourne. Vol. 10165 SPIE, 2017.
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Al Masud, MA, Breznak, C, Vonlockette, PR & Ounaies, Z 2017, On the electric and magnetic alignment of magnetoactive barium hexaferrite-PDMS composites. in NC Goulbourne (ed.), Behavior and Mechanics of Multifunctional Materials and Composites 2017. vol. 10165, 1016513, SPIE, Behavior and Mechanics of Multifunctional Materials and Composites 2017, Portland, United States, 3/26/17. https://doi.org/10.1117/12.2263607

On the electric and magnetic alignment of magnetoactive barium hexaferrite-PDMS composites. / Al Masud, Md Abdulla; Breznak, Corey; Vonlockette, Paris R.; Ounaies, Zoubeida.

Behavior and Mechanics of Multifunctional Materials and Composites 2017. ed. / Nakhiah C. Goulbourne. Vol. 10165 SPIE, 2017. 1016513.

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

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AB - 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.

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Al Masud MA, Breznak C, Vonlockette PR, Ounaies Z. On the electric and magnetic alignment of magnetoactive barium hexaferrite-PDMS composites. In Goulbourne NC, editor, Behavior and Mechanics of Multifunctional Materials and Composites 2017. Vol. 10165. SPIE. 2017. 1016513 https://doi.org/10.1117/12.2263607