Effects of high-dose Mn implantation into ZnO grown on sapphire

  • Y. W. Heo
  • , M. P. Ivill
  • , K. Ip
  • , D. P. Norton
  • , S. J. Pearton
  • , J. G. Kelly
  • , R. Rairigh
  • , A. F. Hebard
  • , T. Steiner

Research output: Contribution to journalArticlepeer-review

175 Scopus citations

Abstract

The effects of high-dose manganese (Mn) implantation into ZnO thin films grown on sapphire substrates which produces ferromagnetism for n-type doping levels were discussed. The ZnO films were grown by pulse-laser deposition on c-plane Al 2O 3 substrates. It was observed that films showed n-type carrier concentration in the range of 2-5 × 10 20 cm -3 and room temperature hysteresis in magnetization loops, after Mn implantation and subsequent annealing at 600°C. The coercivity and saturation magnetization were strong functions of the annealing temperature and thus carrier concentrations, crystalline quality and residual defects account for the magnetic properties of ZnO:Mn.

Original languageEnglish
Pages (from-to)2292-2294
Number of pages3
JournalApplied Physics Letters
Volume84
Issue number13
DOIs
StatePublished - 29 Mar 2004

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