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Which failure results when exceeding the Curie temperature threshold in ferromagnetic proximity sensors?

A)Thermal runaway acceleration occurs
B)Hysteresis loop collapse begins
C)Magnetostriction effects intensify
D)Exchange interaction diminishes

💡 Explanation

When the Curie temperature is exceeded, thermal energy disrupts spin alignment, weakening intrinsic magnetic moments; therefore exchange interaction diminishes because ferromagnetic order transforms to paramagnetic, rather than alternative magnetic or thermal failures.

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