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Magnetic domain characterizations of anisotropic-shaped MnAs nanoclusters position-controlled by selective-area metal-organic vapor phase epitaxy

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Title: Magnetic domain characterizations of anisotropic-shaped MnAs nanoclusters position-controlled by selective-area metal-organic vapor phase epitaxy
Authors: Ito, Shingo Browse this author
Hara, Shinjiroh Browse this author →KAKEN DB
Wakatsuki, Toshitomo Browse this author
Fukui, Takashi Browse this author →KAKEN DB
Keywords: magnetic anisotropy
magnetic domains
magnetic force microscopy
manganese compounds
nanostructured materials
spontaneous magnetisation
Issue Date: 15-Jun-2009
Publisher: American Institute of Physics
Journal Title: Applied Physics Letters
Volume: 94
Issue: 24
Start Page: 243117
Publisher DOI: 10.1063/1.3157275
Abstract: The authors report the buildup fabrication and magnetic domain characterizations of anisotropic-shaped MnAs nanoclusters position-controlled on partially SiO2-masked GaAs (111)B substrates by selective-area metal-organic vapor phase epitaxy. Magnetic force microscopy reveals that both the symmetric- and anisotropic-shaped nanoclusters show spontaneous magnetization at room temperature. Some of the nanoclusters show a single magnetic domain, in which magnetized directions are along one of the a-axes of NiAs-type MnAs, after the external magnetic fields up to 3500 Gauss are applied in-plane. The magnetic domains are well controlled by introducing both magnetocrystalline and shape magnetic anisotropies in the anisotropic-shaped nanoclusters.
Rights: Copyright 2009 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Appl. Phys. Lett. 94, 243117, 2009, and may be found at http://dx.doi.org/10.1063/1.3157275
Type: article
URI: http://hdl.handle.net/2115/40230
Appears in Collections:量子集積エレクトロニクス研究センター (Research Center for Integrated Quantum Electronics) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 原 真二郎

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