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← ScienceWhich risk increases when exceeding Curie temperature in actuator?
A)Complete demagnetization of the material✓
B)Increased magnetostriction within the actuator
C)Enhanced energy absorption hysteresis losses
D)Amplified eddy current induction heating
💡 Explanation
Complete demagnetization occurs due to disruption of spin alignment when exceeding the Curie temperature, via thermal energy overcoming the exchange interaction. Because of lost alignment therefore, the ferromagnetism vanishes rather than increased magnetostriction which requires a magnetic structure.
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