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← ScienceWhich consequence arises when a ferromagnetic material near its Curie temperature experiences external stress?
A)Reduced magnetic coercivity results✓
B)Spontaneous electric polarization occurs
C)Increased electrical conductivity appears
D)Enhanced thermal expansion starts
💡 Explanation
Reduced magnetic coercivity results from magnetoelastic anisotropy near the Curie temperature. Microscopic stress alters domain alignment via the strain energy coupling with the material's magnetization, therefore reducing the field needed to demagnetize, rather than causing polarization, conductivity changes, or thermal effects.
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