I also need to know how to find the thickness of thin film, its volume and to find effective mass? Looking for positive response thank you
The diamagnetic, paramagnetic, ferromagnetic contribution to the magnetic properties depends on the structure of the substance. See our work
Article MAGNETIC PROPERTIES OF Gd(III) IN AQUEOUS MICELLAR SYSTEMS
and other work in my profile.
Dear Mr. Kazmi
The magnetic hysteresis behaviour is one of the powerful tool to identify the type of magnetic behaviour. The response of the curve will decide the type of magnetic materials. in your case the curve is in 2nd and 4th quadrant which belong to diamagnetic behaviour. We cannot remove the diamagnetic behaviour from graph. Instead we may attempt an literature survey based on your material either by considering the temperature ranges (i mean Neel temperature )or by its size(Bulk, Nano, etc.,). From which we may come to know the possibilities of changing the behaviours (dia -> ferro)
The information such as Coercivity, Retentivity, Magnetization are mentioned in emu and Gauss. Hence in your data sheet the sample weight (in grams) will be definitely mentioned please check. Maximum Magnetization means the value of magnetization (Y axis) in emu when maximum magnetic field(X - axis) is applied (in gauss). Coercivity is the maximum value of magnetization in Y axis when the apllied field is zero (in X - axis). Retentivity means the maximum value of applied field (In -ve Y axis) required to nullify the magnetization (X = O). I hope these bit of information will help you to understand VSM. for further information please go through the book entitled "Introduction to Magnetic materials by B.D. Cullity and C.D. Graham"
Regards,
R. Rajesh
If I understand correctly, you want to "correct" your loop for the diamagnetic contribution, so you can calculate the ferromagnetic hysteresis parameters, correct? A relatively easy way of doing this is to fit a line to the high field regions of your loop. the slope should be negative as it is diamagnetic. You can then subtract the magnetization of the diamagnetic component from the hysteresis loop and calculate Mr, Bc from that.
Calculating Ms may be a bit more complicated, since you need to be certain , that you actually reached the saturation field of your sample (i.e. reached saturation). If you did not, you may get away with using an 'approach to saturation' function.
There is a good matlab software to do all these things. Here is the link to the publication.
Article Measuring, Processing, and Analyzing Hysteresis Data
Hope this helps.
Mike
Thank you dear Raman Rajesh , it was really helpful and quite clear to understand
Thank you dear Michael Volk , you got exactly what I meant to ask and I'm quite clear after reading your answer. Thanks again
Glad I was able to help Syed Jamal AHMED Kazmi . If you are interested, we wrote a small, not that technical review on strong field magnetometry. It is meant for an Earth Science audience, but may be helpful.
Article Magnetic tests and characterization protocols mineralogy and...
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