Open AccessEXCHANGE BIASING IN MOLECULAR-BEAM-EPITAXY-GROWN Fe/Fe50Mn50 BILAYERS
Author(s) -
Jing Chao,
Jin Xiao-Feng,
Guangjiong Dong,
Xiaoyan Gong,
Yu Li-Ming,
Weimin Zheng
Publication year - 2000
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.49.2022
Subject(s) - biasing , molecular beam epitaxy , materials science , ferromagnetism , antiferromagnetism , coercivity , condensed matter physics , epitaxy , exchange bias , molecular beam , ferromagnetic resonance , magnetic field , layer (electronics) , nanotechnology , magnetization , chemistry , voltage , magnetic anisotropy , physics , molecule , organic chemistry , quantum mechanics
Exchange biasing and coercive field of molecular-beam-epitaxy-grown Fe/Fe50 Mn50 bilayers have been investigated by Surface Magneto-optical Kerr Effect(SMOKE) and ferromagnetic resonance measurements. The results indica te that there is no exchange biasing when the thickness of antiferromagnetic lay er is less than 55nm. The exchange biasing appears when the thickness of antif erromagnetic layer is greater than 55nmand the maximum value is reached when the thickness is about 7nm. Exchange biasing and coercive field decrease with f urther increase of the thickness of the antiferr-magnetic layer. The ferromagnet ic resonance measurement results show that there exists unidirectional anisotrop y. The above results are discussed in the paper.