2024-03-29T06:03:12Zhttps://eprints.lib.hokudai.ac.jp/dspace-oai/requestoai:eprints.lib.hokudai.ac.jp:2115/402302022-11-17T02:08:08Zhdl_2115_20069hdl_2115_156Magnetic domain characterizations of anisotropic-shaped MnAs nanoclusters position-controlled by selective-area metal-organic vapor phase epitaxyIto, ShingoHara, ShinjirohWakatsuki, ToshitomoFukui, Takashimagnetic anisotropymagnetic domainsmagnetic force microscopymanganese compoundsnanostructured materialsspontaneous magnetisation549The 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.American Institute of PhysicsJournal Articleapplication/pdfhttp://hdl.handle.net/2115/40230https://eprints.lib.hokudai.ac.jp/dspace/bitstream/2115/40230/1/APL_94_243117.pdf0003-69511077-3118AA00543431Applied Physics Letters94242431172009-06-15enginfo:doi/10.1063/1.3157275Copyright 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/10.1063/1.3157275publisher