量研学術機関リポジトリ「QST-Repository」は、国立研究開発法人 量子科学技術研究開発機構に所属する職員等が生み出した学術成果（学会誌発表論文、学会発表、研究開発報告書、特許等）を集積しインターネット上で広く公開するサービスです。 Welcome to QST-Repository where we accumulates and discloses the academic research results(Journal Publications, Conference presentation, Research and Development Report, Patent, etc.) of the members of National Institutes for Quantum Science and Technology.
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Magnetism of Gadolinium-doped gallium nitride (GaGdN) depending on the Ga flux during crystal growth is investigated using magnetic Doppler broadening (MDB) measurements and M-H measurements. In Ga deficient condition, the matrix phase of GaGdN layer is regarded as GaN due to the precipitation of GdN nanoparticles. From the MDB measurements, magnetic moments at gallium vacancies (V Ga ) in GaN is detected, however, ferromagnetism derived from GdN nanoparticle is dominant. In Ga rich condition, pure GaGdN layer was formed and weak ferromagnetism was observed. The MDB measurements detect the magnetic moments at V Ga in GaGdN, hich might be a source of magnetism.
Magnetic Doppler broadening measurement on Gadolinium-doped GaN
