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

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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