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← ScienceWhich mechanism limits magnetization reversal speed in hard drive platters?
A)Domain wall nucleation and propagation✓
B)Magnetostriction-induced anisotropy changes
C)Giant magnetoresistance signal saturation
D)Superparamagnetic thermal fluctuations
💡 Explanation
Domain wall nucleation and propagation governs reversals. Applied fields trigger domain wall creation and movement, therefore determining the speed rather than anisotropy effects or thermal issues that influence data stability because those represent different effects at the same scale.
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