A ferromagnetic material is heated above its curie temperature. Which one is a correct statement
Correct answer: B. Ferromagnetic domains become random
- A. Ferromagnetic domains are perfectly arranged
- B. Ferromagnetic domains become random
- C. Ferromagnetic domains are not influenced
- D. Ferromagnetic material changes itself into diamagnetic material
Explanation
When a ferromagnetic material is heated above its Curie temperature, the thermal energy overcomes the magnetic energy that keeps the domains aligned. Consequently, the domains become randomly oriented, and the material loses its ferromagnetic properties, becoming paramagnetic instead. Option B is correct because it accurately describes this transition. Option A is incorrect because the domains are not perfectly arranged; they become disordered. Option C is incorrect because the domains are affected by heating. Option D is incorrect because the material becomes paramagnetic, not diamagnetic.
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Solids are compared through crystal structure, amorphous arrangement, elasticity, plastic deformation, stress, strain and Young’s modulus. Electrical behavior depends on available charge carriers and band structure, so conductors, insulators and semiconductors must be distinguished from mechanical properties such as strength, stiffness and brittleness.
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