Magnetotransport in ferromagnetic (Ga,Mn)N epitaxial films

M. H. Ham; M. C. Jeong; W. Y. Lee; J. M. Myoung; J. M. Lee; J. Y. Chang; S. H. Han

doi:10.4028/www.scientific.net/msf.449-452.1041

Magnetotransport in ferromagnetic (Ga,Mn)N epitaxial films

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

Department of Materials Science and Engineering

Research output: Contribution to journal › Conference article › peer-review

Abstract

We present the ferromagnetism and magnetotransport properties in the (Ga,Mn)N epitaxial films with very low Mn concentrations grown by plasma-enhanced molecular beam epitaxy (PEMBE). The (Ga,Mn)N epitaxial films were found to exhibit ferromagnetic ordering with Curie temperature of 700 K. All the films exhibit n-type characteristics. The negative magnetoresistance was observed below 150 K, and found to gradually increase with decreasing temperature. The ferromagnetism in the (Ga,Mn)N is due to the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between the localized Mn moments mediated by the electron gas.

Original language	English
Pages (from-to)	1041-1044
Number of pages	4
Journal	Materials Science Forum
Volume	449-452
Issue number	II
DOIs	https://doi.org/10.4028/www.scientific.net/msf.449-452.1041
Publication status	Published - 2004
Event	Designing, Processing and Properties of Advanced Engineering Materials: Proceedings on the 3rd International Symposium on Designing, Processing and Properties of Advanced Engineering Materials - Jeju Island, Korea, Republic of Duration: 2003 Nov 5 → 2003 Nov 8

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

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10.4028/www.scientific.net/msf.449-452.1041

Cite this

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title = "Magnetotransport in ferromagnetic (Ga,Mn)N epitaxial films",

abstract = "We present the ferromagnetism and magnetotransport properties in the (Ga,Mn)N epitaxial films with very low Mn concentrations grown by plasma-enhanced molecular beam epitaxy (PEMBE). The (Ga,Mn)N epitaxial films were found to exhibit ferromagnetic ordering with Curie temperature of 700 K. All the films exhibit n-type characteristics. The negative magnetoresistance was observed below 150 K, and found to gradually increase with decreasing temperature. The ferromagnetism in the (Ga,Mn)N is due to the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between the localized Mn moments mediated by the electron gas.",

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

year = "2004",

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language = "English",

volume = "449-452",

pages = "1041--1044",

journal = "Materials Science Forum",

issn = "0255-5476",

publisher = "Trans Tech Publications",

number = "II",

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TY - JOUR

T1 - Magnetotransport in ferromagnetic (Ga,Mn)N epitaxial films

AU - Ham, M. H.

AU - Jeong, M. C.

AU - Lee, W. Y.

AU - Myoung, J. M.

AU - Lee, J. M.

AU - Chang, J. Y.

AU - Han, S. H.

PY - 2004

Y1 - 2004

N2 - We present the ferromagnetism and magnetotransport properties in the (Ga,Mn)N epitaxial films with very low Mn concentrations grown by plasma-enhanced molecular beam epitaxy (PEMBE). The (Ga,Mn)N epitaxial films were found to exhibit ferromagnetic ordering with Curie temperature of 700 K. All the films exhibit n-type characteristics. The negative magnetoresistance was observed below 150 K, and found to gradually increase with decreasing temperature. The ferromagnetism in the (Ga,Mn)N is due to the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between the localized Mn moments mediated by the electron gas.

AB - We present the ferromagnetism and magnetotransport properties in the (Ga,Mn)N epitaxial films with very low Mn concentrations grown by plasma-enhanced molecular beam epitaxy (PEMBE). The (Ga,Mn)N epitaxial films were found to exhibit ferromagnetic ordering with Curie temperature of 700 K. All the films exhibit n-type characteristics. The negative magnetoresistance was observed below 150 K, and found to gradually increase with decreasing temperature. The ferromagnetism in the (Ga,Mn)N is due to the Ruderman-Kittel-Kasuya-Yosida (RKKY) interaction between the localized Mn moments mediated by the electron gas.

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AN - SCOPUS:18544411358

SN - 0255-5476

VL - 449-452

SP - 1041

EP - 1044

JO - Materials Science Forum

JF - Materials Science Forum

IS - II

T2 - Designing, Processing and Properties of Advanced Engineering Materials: Proceedings on the 3rd International Symposium on Designing, Processing and Properties of Advanced Engineering Materials

Y2 - 5 November 2003 through 8 November 2003

ER -

Magnetotransport in ferromagnetic (Ga,Mn)N epitaxial films

Abstract

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