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Magnetic properties of Mg‐doped AlN zigzag nanowires
Author(s) -
Hui Yeung Yu,
Ye Jing,
Lortz Rolf,
Teng Kar Seng,
Lau Shu Ping
Publication year - 2012
Publication title -
physica status solidi (a)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.532
H-Index - 104
eISSN - 1862-6319
pISSN - 1862-6300
DOI - 10.1002/pssa.201228115
Subject(s) - materials science , coercivity , magnetic moment , zigzag , sapphire , x ray photoelectron spectroscopy , ferromagnetism , condensed matter physics , curie temperature , nitride , doping , nanowire , magnetic anisotropy , chemical vapor deposition , analytical chemistry (journal) , magnetic field , nuclear magnetic resonance , magnetization , nanotechnology , layer (electronics) , optoelectronics , chemistry , optics , laser , physics , geometry , mathematics , quantum mechanics , chromatography
Abstract Quasi‐aligned hexagonal Mg‐doped aluminum nitride zigzag nanowires (AlN:Mg ZNWs) were fabricated on sapphire substrates using chemical vapor deposition method. A saturated magnetic moment of ∼1 emu/cm 3 was found in the AlN:Mg ZNWs when a magnetic field was applied parallel to the sample. The AlN:Mg ZNWs exhibited magnetic anisotropy. The magnetic moment was about 50% larger and the coercivity was about 20% smaller when the field was applied parallel to the sample as compared to the applied field perpendicular to the sample. The Curie temperature of the AlN:Mg ZNWs was above 400 K. The origin of the ferromagnetism in the AlN:Mg ZNWs could be attributed to the formation of Mg–N complex which leads to magnetic coupling as revealed by X‐ray photoelectron spectroscopy.