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Question
Answer in brief.
Discuss the Curie law for paramagnetic material.
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Solution
Curie's law: The magnetization of a paramagnetic material is directly proportional to the external magnetic field and inversely proportional to the absolute temperature of the material.
If a paramagnetic material at an absolute temperature T is placed in an external magnetic field of induction `vec "B"_"ext"`, the magnitude of its magnetization
`"M"_"z" prop "B"_"ext"/"T"`
∴ `"M"_"z" = "C" "B"_"ext"/"T"`
where the proportionality constant C is called the Curie constant.
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