In Ni-Sn alloy system, the material shows antiferromagnetism in room temperature hysteresis curve, i have also confirmed with ABK plot. I want to know how to confirm that antiferromagnetism using M-T curve. Do i need to take high temperature M-T curve or low temperature M-T curve to confirm that.
From your M-T data, you need to evidence the Neel temperature. Since the room temperature M-H curve is characteristic of an antiferromagnet (and therefore, there is no hysteresis), you have to perform M-T measurement between 300K and high temperature
I suggest to read:
Introduction to solid state physics (Charles Kittel)
Physics of magnetism (Chikazumi)
Magnetis, Principles and Application (Derek Craik)
Magnetism in Condensed matter (Stephen Blumdell)
AFM does not give hysteresis. It depends on the material and reason for AFM mechanism, we can go for low temp or high temp M-T. In you system I suggest you can try M-T for high temperature and see at which temp the moment is maximum.
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