Open AccessFerromagnetic resonance in ferromagnetic bilayer films under the stress anisotropy
Author(s) -
Rong Jianhong,
Guohong Yun
Publication year - 2007
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.56.5483
Subject(s) - condensed matter physics , ferromagnetic resonance , materials science , ferromagnetism , anisotropy , ferromagnetic material properties , stress (linguistics) , magnetic anisotropy , bilayer , magnetization , physics , magnetic field , optics , linguistics , philosophy , quantum mechanics , membrane , biology , genetics
The ferromagnetic resonance (FMR) technique has been used to investigate the properties of ferromagnetic/nonmagnetic/ferromagnetic systems. We derived the FMR dispersion relation, taking into account the competition between the indirect interlayer coupling and stress anisotropy. In this caseone of the layers A has a strong in-plane anisotropy compared with the coupling strength and the in-plane anisotropy of the other layer B. As the applied field increasesmagnetization of layer B may suddenly switch from the antiparallel configuration to the saturated state. The discontinuities are more important for the optical than for the acoustic modes. For the optical modethe effect of interlayer coupling and stress anisotropy on the HR vs φH curves is more apparent.