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Answeer the following problems.

problem 1) describe the weiss theory of ferromagnetism. Obtain an expression for the susceptibility of ferromagnetic material.

problem 2) Describe how saturation magnetization depends on temperature.

problem 3) Derive the quantization condition of spin waves.

problem 4) Obtain Block T3/2 law. Describe its validity.

problem 5) What is a ferrimagnetic material. Describe the structure of a ferrite material.

problem 6) Describe Nerrís theory of ferrimagnetic material.

problem 7) What note on the following:

(a) Effect of crystal field on the paramagneitc properties of solid.

(b) Determination of dielectric of a solid.

(c) GMR and CMR materials.

(d) Ferromagnetic domains.

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  • Category:- Physics
  • Reference No.:- M95044

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