Abstract:
Steel is one of the representative ferromagnetic materials with hard magnetic type. The aim of this
study was modeling the effect of temperature on magnetic hysteresis loop parameters of steel,
because of exceptional characteristics steel based composition have been the focus of considerable
investigation among ferromagnetic material. The parameters curie temperature, critical exponent,
saturation magnetization at room temperature were used in the modeling to obtain the magnetic
hysteresis loop in this study, which was done using MATLAB program. The steps followed in the
modeling temperature dependence of magnetization, temperature dependence of coercive field and the
dependence area of steel were appropriate modeling function for each plot were described. Next,
MATLAB coding was used for function by setting all of the necessary in puts and finally the output
result was displayed. On the parameters of magnetic hysteresis loop of steel, temperature dependence
of magnetization, coercive field, flux density and the hysteresis loop of magnetizing force and flux
density of steel were investigated. So, as the electric field increases coercive field, saturation
magnetization, flux density and area of the magnetic hysteresis loop of steel all increases. On the other
hand the coercive field, saturation magnetization, flux density and area of the magnetic hysteresis loop
of steel all decreases when temperature rises. Generally, The value of saturation flux density(Bs
=1.1T), Coercive field (Hc = 50kA/m) , Remanent flux density (Br= 0.35T ) and the result shows that,
Steel is a hard magnetic material with high residual flux, large coercive force and large hysteresis
losses. It is suitable for making permanent magnets and the shape of the B-H curve indicates how
relative permeability of the material changes along with the magnetic flux density and magnetizing
force.
