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Question
How does ferromagnetism arise?
Very Short Answer
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Solution
Ferromagnetism arises due to the spontaneous alignment of magnetic moments (spins of unpaired electrons) of atoms or ions in a material, even in the absence of an external magnetic field. Iron, cobalt, nickel, CrO2, etc., are such substances.
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Chapter 1: Solid State - SHORT ANSWER TYPE QUESTIONS [Page 44]
