Title :
Eddy current calculation in multilaminated magnetic thin-films
Author :
Geri, Albert0 ; Veca, Giuseppe Maria ; Salvini, Alessandro
Author_Institution :
Dipartimento di Ingegneria Electtrica, Rome Univ., Italy
fDate :
11/1/1995 12:00:00 AM
Abstract :
In multilaminated objects the capacitive couplings between the magnetic layers can allow the circulation of eddy currents even if the thickness of the magnetic film is small in comparison with the skin depth. These currents alter the magnetic response in frequency domain and introduce permeance resonances. In this paper the authors describe an improvement of their circuital model able to calculate the value and the effects of eddy currents in multilaminated magnetic thin films. Using this model it is possible to obtain a prediction of the effective permeability trend which is more accurate than that obtained by previous circuital approaches, as the acceptable degree of agreement with experimental observations demonstrates
Keywords :
eddy currents; magnetic multilayers; magnetic permeability; capacitive couplings; eddy currents; effective permeability; frequency domain; magnetic response; multilaminated magnetic thin-films; permeance resonances; Couplings; Eddy currents; Frequency domain analysis; Magnetic circuits; Magnetic domains; Magnetic films; Magnetic resonance; Permeability; Predictive models; Skin;
Journal_Title :
Magnetics, IEEE Transactions on