513.001 Molecular and Solid State Physics

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Physical
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Magnetism

(a) Sketch the magnetization as a function of temperature for a ferromagnet in zero applied magnetic field. Label the Curie temperature.

(b) Sketch the magnetic susceptibility as a function of temperature for a paramagnet, a ferromagnet, and an antiferromagnet.

(c) Why do all materials have a diamagnetic response?

(d) Explain how the exchange energy leads to ferromagnetism.