Magnetization processes simulation by using the Tchebyshev approximation

Abstract

A simple method for simulating the hysteresis loops of the amorphous ribbons is described. A specific form of the Tchebyshev approximation has been proposed, offering a physical understanding of the irreversible magnetization process. We have divided the loop into two curves auxiliary semi-sum, h s, and semi-difference, h d, and with what the hysteresis loop approaches by means of the expression h= h s± h d. With the purpose of checking the proposed model, we have obtained the dynamic hysteresis loop of the Mo-Permalloy 4-79, and we have found that the simulation is in good agreement with the experimental data. The hysteretic energy losses obtained are 13.16 J/m 3 while the experimental value is 13.14 J/m 3.