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In which of the following increases and then decreases?

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in Engineering Physics II by (679k points)
In which of the following increases and then decreases?

(a) Ferromagnetic material

(b) Antiferromagnetic material

(c) Paramagnetic material

(d) Diamagnetic material

The question was posed to me in semester exam.

I would like to ask this question from Theory of Ferromagnetism topic in portion Magnetic Properties of Materials of Engineering Physics II

1 Answer

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Right choice is (b) Antiferromagnetic material

Best explanation: The susceptibility is very small and is positive. It is given by, susceptibility = C/(T+θ) for T>TN. Where TN is the Neel temperature.

Initially, the susceptibility increases slightly as the temperature increases and beyond a particular temperature, known as Neel temperature, the susceptibility decreases with temperature.

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