Magnetization of a sample was defined in terms of hysteresis curve which is determined by using vibratory sample magnetometer (VSM). How to interpret the magnetic susceptibility of a material through hysteresis curve ?
You may obtain the values dI/dH in different regions of H across the points of your hysteresis loop. Then you may give the susceptibility vs H curve.
Is there any published literature relevant to the Honda-Owen plot for measuring the magnetic susceptibility?
The initial magnetic susceptibility is used. It is the susceptibility at very low field, but if you make this measurements from VSM , because their low value, it has high error, so the best way to measure the susceptibility is using a comercial bridge susceptibilimeter, the best is AGICO Kappabridge. If are only a few sampIes I can measure it for you in my laboratory in Buenos Aires (Argentina) without any cost.
Dear Bushra: You can to take a few points, no far than 10 mT (in H) and using linear regression with Excel, LibreOffice or a hand calculator, and the slope of the lineal function is the initial susceptibility.
dear carlos alberto:for frromagnetic material we can not using linear regression.because it is a loop and can not fit on line.... what way for calculated slope of initial susceptibility?
Dear Iman: Y do not say that you take all the loop, only a few initial points (low field values as I recomended to you), where the linear aproximation in valid. In some cases even the linear aproximation do not still valid because there is a Rayleigh effect, in such case a parabolic aproximation must be used, and the initial susceptibilty is field dependente.
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