Curie temperature of ferromagnetic (Ga,Mn)N epitaxial films

J. M. Lee, M. H. Ham, J. M. Myoung, J. Y. Chang, S. H. Han, W. Y. Lee

Research output: Contribution to journalArticle

Abstract

Electron-mediated ferromagnetism persisting to room temperature has been investigated in epitaxial (Ga,Mn)N films with low Mn concentration grown by plasma-enhanced molecular beam epitaxy (PEMBE).The experimental value of T C (∼325 K) in the (Ga,Mn)N film with x = 0.3% from the difference (AM) between field-cooled (FC) and zero field-cooled (ZFC) magnetization curves is found to be lower than the estimated value of T C (∼407 K), obtained by the mean field approximations. The extra-ordinary Hall effect in the epitaxial (Ga,Mn)N film with x = 0.2% is found to appear in the temperature range 100 K-300 K.

Original languageEnglish
Pages (from-to)1466-1469
Number of pages4
JournalPhysica Status Solidi (B) Basic Research
Volume241
Issue number7
DOIs
Publication statusPublished - 2004 Jun 1

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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