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Which outcome destabilizes a ferromagnetic memory cell at elevated temperature?

A)Increased probability of superparamagnetism
B)Decreased magnetic hysteresis coercivity
C)Enhanced spin-orbit coupling effects
D)Increased magnetic domain wall pinning

💡 Explanation

Increased temperature causes increased thermal energy, which can overcome the magnetic anisotropy energy barrier via the Néel-Arrhenius law leading to superparamagnetism, because the magnetic moment fluctuates randomly; therefore the stored data is lost, rather than stabilized by anisotropy.

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