Ferromagnetism in Mn and Cr doped GaN by thermal diffusion

X. M. Cai*, A. B. Djurišić, M. H. Xie, H. Liu, X. X. Zhang, J. J. Zhu, H. Yang

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

19 Scopus citations

Abstract

Doping of magnetic element Mn and Cr in GaN was achieved by thermal diffusion. The conductivity of the samples, which were all n-type, did not change significantly after the diffusion doping. X-ray diffraction measurements revealed no secondary phase in the samples. Experiments using superconducting quantum interference device (SQUID) showed that the samples were ferromagnetic at 5 and 300 K, implying the Curie temperature to be around or over 300 K, despite their n-type conductivity.

Original languageEnglish (US)
Pages (from-to)292-295
Number of pages4
JournalMaterials Science and Engineering B: Solid-State Materials for Advanced Technology
Volume117
Issue number3
DOIs
StatePublished - Mar 25 2005
Externally publishedYes

Bibliographical note

Funding Information:
We are grateful to Dr. Y.G. Cao and Prof. Ning for XRD measurements of the samples. X.X. Zhang would like to thank the support by HK RGC.

Keywords

  • Cr
  • Ferromagnetism
  • GaN
  • Mn
  • Thermal doping

ASJC Scopus subject areas

  • General Materials Science
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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