Molecular Beam Epitaxy of Wurtzite GaN-Based Magnetic Alloy Semiconductors
- 1 July 2001
- journal article
- Published by IOP Publishing in Japanese Journal of Applied Physics
- Vol. 40 (7B), L724
- https://doi.org/10.1143/jjap.40.l724
Abstract
The preparation of hexagonal GaN:Mn and GaN:Fe epilayers has been studied by RF-plasma-assisted molecular beam epitaxy. GaN:Fe epilayers exhibit superparamagnetic behavior, presumably due to ferromagnetic inclusions. GaN:Mn epilayers can be expressed in the form of Ga1-x Mn x N with x up to 0.02, indicating the successful preparation of the GaN-based magnetic alloy semiconductor for the first time. The epilayers are primarily paramagnetic and highly resistive. For epilayers with very high Mn concentration (∼ 1021 cm-3), analysis of the paramagnetic component has revealed the effective spin number S ≈2.5 together with the positive paramagnetic Curie temperature. This suggests the presence of ferromagnetic spin exchange between Mn ions.Keywords
This publication has 19 references indexed in Scilit:
- Zener Model Description of Ferromagnetism in Zinc-Blende Magnetic SemiconductorsScience, 2000
- Creation of high resistivity GaN by implantation of Ti, O, Fe, or CrJournal of Applied Physics, 2000
- Preparation and Characterization of Fe-Based III-V Diluted Magnetic Semiconductor (Ga, Fe)AsJapanese Journal of Applied Physics, 2000
- (GaMn)As: GaAs-based III–V diluted magnetic semiconductors grown by molecular beam epitaxyJournal of Crystal Growth, 1997
- MOVPE of GaN using a specially designed two-flow horizontal reactorJournal of Crystal Growth, 1997
- Determination of the GaN/AlN band offset via the (-/0) acceptor level of ironApplied Physics Letters, 1994
- New diluted magnetic semiconductors based on III–V compoundsJournal of Magnetism and Magnetic Materials, 1991
- Diluted magnetic III-V semiconductorsPhysical Review Letters, 1989
- Magnetic Study on Hexagonal Nitrides of 3d Transition MetalsJournal of the Physics Society Japan, 1972
- Magnetic Study on Mn4N and its Related CompoundsJournal of the Physics Society Japan, 1962