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The paper presents the results of modelling the influence of magnetizing field frequency on the magnetic characteristics of Fe(40)Ni(38)Mo(4)B(18) amorphous alloy in as-quenched state An extension for the Jiles-Atherton model was applied and changes of the parameter k during the magnetization process were considered On the base of the experiment, the parameters of the Jiles-Atherton model were calculated for experimental hysteresis loop Evolutionary strategies, together with the gradient optimisation method, were used Moreover, the changes of parameters c and a as the function of frequency of magnetizing field were also taken into consideration Finally, the high conformity between the experimental and modelling results was achieved This high conformity indicates that the results both create new possibilities in modelling of properties of inductive components based on the amorphous alloys, as well as extend the possibility of quantitative description of magnetization process

acta physica polonica. a

Extension of the Jiles-Atherton Model for Modelling the Frequency Dependence of Magnetic Characteristics of Amorphous Alloy Cores for Inductive Components of Electronic Devices