Structural and chemical characterization of Mn doped GaN nanowires by X-ray absorption spectroscopy

Han Kyu Seong, Ungkil Kim, Myoung Ha Kim, Hyun Hwi Lee, Dong Ryeol Lee, Jae Young Kim, Heon Jin Choi

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5 Citations (Scopus)

Abstract

We report on structural chemical state of doped Mn atoms in single crylstalline Mn doped GaN nanowires by X-ray absorption spectroscopy. Anomalous X-ray scattering and K-edge X-ray absorption fine structure measurement make it clear that Mn atoms substitute the Ga sites and they largely take part in the wurtzite network of host GaN. X-ray absorption and X-ray magnetic circular dichroism spectra at Mn L 2,3-edges show that doped Mn has local magnetic moment and the electronic configuration of the doped Mn is mainly 3d 5 component. The structural and chemical states of the doped Mn atoms imply that they ascribe to the observed ferromagnetism in these diluted magnetic semiconductor nanowires.

Original languageEnglish
Pages (from-to)6772-6776
Number of pages5
JournalJournal of Nanoscience and Nanotechnology
Volume9
Issue number11
DOIs
Publication statusPublished - 2009 Nov 1

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All Science Journal Classification (ASJC) codes

  • Bioengineering
  • Chemistry(all)
  • Biomedical Engineering
  • Materials Science(all)
  • Condensed Matter Physics

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