Polarized induced magnetic broadening of photonic activities in Fe 3O4-elastomer composites

Danhao Ma, Dustin T. Hess, Pralav P. Shetty, Kofi W. Adu, Richard Bell, Mauricio Terrones

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

Abstract

We report a systematic study of polarization and magnetic field effects on the optical response of Fe3O4-silicone elastomer composite. The Fe3O4 particles were aligned in a silicone elastomer matrix with an external static magnetic field. Films of composites containing 5wt% of 20nm ≤ d ≤ 30nm Fe3O4 particles aligned in- and out-of-plane in the elastomer host were prepared. The optical spectra of the films were measured with the Perkin-Elmer Lambda 950 UV/vis/NIR spectrometer. We observed a systematic redshift in the optical response of the out-of-plane composite films with increasing static magnetic field strength, which saturated near 600 Gauss. We obtained a maximum redshift of ∼46 nm at 600 Gauss. The observed redshift in the optical response of the out-of-plane composite film is attributed to the effect of the magnetic field. This facilitated the formation of the highly aligned particles that induced strong electric dipole in the aligned particles. Interestingly, there were no observable shifts with increasing magnetic field strength in the in-plane films, suggesting that the orientation (polarization) of the magnetic dipole and the induced electric dipole play a crucial role in the optical response.

Original languageEnglish (US)
Title of host publicationOptically Active Nanostructures
PublisherMaterials Research Society
Pages55-60
Number of pages6
ISBN (Print)9781632661029
DOIs
Publication statusPublished - Jan 1 2013
Event2012 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 25 2012Nov 30 2012

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1509
ISSN (Print)0272-9172

Other

Other2012 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period11/25/1211/30/12

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

Cite this

Ma, D., Hess, D. T., Shetty, P. P., Adu, K. W., Bell, R., & Terrones, M. (2013). Polarized induced magnetic broadening of photonic activities in Fe 3O4-elastomer composites. In Optically Active Nanostructures (pp. 55-60). (Materials Research Society Symposium Proceedings; Vol. 1509). Materials Research Society. https://doi.org/10.1557/opl.2013.539