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

doi:10.1002/pssb.200304607

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

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 language	English
Pages (from-to)	1466-1469
Number of pages	4
Journal	Physica Status Solidi (B) Basic Research
Volume	241
Issue number	7
DOIs	https://doi.org/10.1002/pssb.200304607
Publication status	Published - 2004 Jun

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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

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.",

author = "Lee, {J. M.} and Ham, {M. H.} and Myoung, {J. M.} and Chang, {J. Y.} and Han, {S. H.} and Lee, {W. Y.}",

year = "2004",

month = jun,

doi = "10.1002/pssb.200304607",

language = "English",

volume = "241",

pages = "1466--1469",

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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

Y1 - 2004/6

N2 - 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.

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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JF - Physica Status Solidi (B): Basic Research

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

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