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Ferromagnetism in short‐period GaGdN/GaN superlattices grown by RF‐MBE
Author(s) -
Choi S. W.,
Zhou Y. K.,
Kim M. S.,
Kimura S.,
Emura S.,
Hasegawa S.,
Asahi H.
Publication year - 2006
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.200669572
Subject(s) - superlattice , molecular beam epitaxy , ferromagnetism , materials science , hysteresis , condensed matter physics , magnetization , saturation (graph theory) , period (music) , epitaxy , magnetic hysteresis , magnetic field , optoelectronics , layer (electronics) , nanotechnology , physics , acoustics , mathematics , quantum mechanics , combinatorics
GaGdN single layers and GaGdN/GaN short‐period superlattices (SLs) were grown on Al 2 O 3 (0001) substrates by radio frequency molecular beam epitaxy (RF‐MBE) and their magnetic and structural properties were investigated. Both types of samples exhibited ferromagnetic characteristics at both 10 and 300 K. Clear hysteresis and clear saturation were observed in the magnetization vs. magnetic field curves at both temperatures. The GaGdN/GaN short‐period SL samples showed significantly higher saturation magnetization than the GaGdN single layer samples. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)