Please use this identifier to cite or link to this item: https://doi.org/10.1063/1.3078112
Title: High-frequency permeability spectra of FeCoSiN/ Al2 O3 laminated films: Tuning of damping by magnetic couplings dependent on the thickness of each ferromagnetic layer
Authors: Xu, F. 
Zhang, X. 
Phuoc, N.N. 
Ma, Y. 
Ong, C.K. 
Issue Date: 2009
Citation: Xu, F., Zhang, X., Phuoc, N.N., Ma, Y., Ong, C.K. (2009). High-frequency permeability spectra of FeCoSiN/ Al2 O3 laminated films: Tuning of damping by magnetic couplings dependent on the thickness of each ferromagnetic layer. Journal of Applied Physics 105 (4) : -. ScholarBank@NUS Repository. https://doi.org/10.1063/1.3078112
Abstract: In this work, we investigate the high-frequency permeability spectra of as-sputtered FeCoSiN/ Al2 O3 laminated films, and discuss their dependence on the thickness of each FeCoSiN layer, based on the phenomenological Landau-Lifshitz-Gilbert equation. The damping factor and coercivity show their minima with lamination, deviating from the expectation based on the grain size confinement effect. Such dependences on the layer thickness indicate the influence of magnetic coupling. The decreases in the damping factor and the coercivities with lamination can be partially attributed to the decrease in the magnetostatic coupling induced by ripple structures. The enhanced damping and enlarged coercivity values obtained with further lamination are ascribed to the enhanced Ńel couplings. The dependences show that the lamination can be effective in tuning the magnetization dynamics by changing the magnetic couplings. © 2009 American Institute of Physics.
Source Title: Journal of Applied Physics
URI: http://scholarbank.nus.edu.sg/handle/10635/115133
ISSN: 00218979
DOI: 10.1063/1.3078112
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