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Ferromagnetism in Mn- and Co-implanted ZnO nanorods

  • K. Ip
  • , R. M. Frazier
  • , Y. W. Heo
  • , D. P. Norton
  • , C. R. Abernathy
  • , S. J. Pearton
  • , J. M. Zavada
  • , J. Kelly
  • , R. Rairigh
  • , A. F. Hebard
  • , R. G. Wilson
  • University of Florida
  • United States Army Research Office

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

2 Scopus citations

Abstract

ZnO nanorods with typical lengths and diameters of ∼2 μm and 15-30 nm, respectively, were grown on Ag-coated Si substrate by catalyst-driven Molecular Beam Epitaxy and subsequently implanted with Mn+ or Co+ ions of dose ranging from 1-5×1016 cm-2. The samples were then annealed at 700°C for 5 minutes. The structural properties were unaffected, but they exhibited ferromagnetism that persisted up to temperatures of 225-300 K. Coersive fields were ≤ 100 Oe even at 10 K. The results are similar to those obtained for implantation of Mn+ and Co+ ions in bulk, single-crystal ZnO, indicating the promise of nanorods for nanoscale spintronics.

Original languageEnglish
Title of host publication2003 3rd IEEE Conference on Nanotechnology, IEEE-NANO 2003 - Proceedings
PublisherIEEE Computer Society
Pages16-19
Number of pages4
ISBN (Electronic)0780379764
DOIs
StatePublished - 2003
Event2003 3rd IEEE Conference on Nanotechnology, IEEE-NANO 2003 - San Francisco, United States
Duration: 12 Aug 200314 Aug 2003

Publication series

NameProceedings of the IEEE Conference on Nanotechnology
Volume1
ISSN (Print)1944-9399
ISSN (Electronic)1944-9380

Conference

Conference2003 3rd IEEE Conference on Nanotechnology, IEEE-NANO 2003
Country/TerritoryUnited States
CitySan Francisco
Period12/08/0314/08/03

Keywords

  • Electrons
  • Magnetoelectronics
  • Materials science and technology
  • Molecular beam epitaxial growth
  • Nanobioscience
  • Physics
  • Rapid thermal annealing
  • Substrates
  • Temperature
  • Zinc oxide

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