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

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Epitaxial films
Curie temperature
Ferromagnetism
Hall effect
Molecular beam epitaxy
ferromagnetism
low concentrations
Magnetization
molecular beam epitaxy
Plasmas
Temperature
magnetization
Electrons
room temperature
curves
approximation
electrons
temperature

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Lee, J. M. ; Ham, M. H. ; Myoung, J. M. ; Chang, J. Y. ; Han, S. H. ; Lee, W. Y. / Curie temperature of ferromagnetic (Ga,Mn)N epitaxial films. In: Physica Status Solidi (B) Basic Research. 2004 ; Vol. 241, No. 7. pp. 1466-1469.
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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.",
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Curie temperature of ferromagnetic (Ga,Mn)N epitaxial films. / Lee, J. M.; Ham, M. H.; Myoung, J. M.; Chang, J. Y.; Han, S. H.; Lee, W. Y.

In: Physica Status Solidi (B) Basic Research, Vol. 241, No. 7, 01.06.2004, p. 1466-1469.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Curie temperature of ferromagnetic (Ga,Mn)N epitaxial films

AU - Lee, J. M.

AU - Ham, M. H.

AU - Myoung, J. M.

AU - Chang, J. Y.

AU - Han, S. H.

AU - Lee, W. Y.

PY - 2004/6/1

Y1 - 2004/6/1

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AB - 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.

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