Ferromagnetic resonance and eddy currents in high-permeable thin films

Journal Article · Wed Jan 01 00:00:00 EST 1997 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.364118· OSTI ID:435108

van de Riet, E; Roozeboom, F ^[1]

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1. Philips Research Laboratories, Prof. Holstlaan 4, 5656 AA Eindhoven (The Netherlands)

The effect of eddy currents and ferromagnetic resonance (FMR) on the frequency dependence of the permeability of FeTaN thin films is studied. An equation is given that describes the combination of these two effects. The agreement between the theoretical calculations and the experimental data is excellent. Already at 1 MHz the imaginary part of the permeability is significantly changed by FMR. Above 10 MHz the real part of the permeability is decreased by FMR. The combined effect is best observed in extremely high permeable, 1 {mu}m thick films. A value for the ferromagnetic damping constant is obtained. {copyright} {ital 1997 American Institute of Physics.}

• OSTI ID: 435108
• Journal Information: Journal of Applied Physics, Vol. 81, Issue 1; Other Information: PBD: Jan 1997
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
TANTALUM NITRIDES
PERMEABILITY
IRON NITRIDES
IRON ALLOYS
TANTALUM ALLOYS
FERROMAGNETIC MATERIALS
FERROMAGNETIC RESONANCE
EDDY CURRENTS
MAGNETIC SUSCEPTIBILITY
THIN FILMS
FREQUENCY DEPENDENCE