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← ScienceWhich outcome undermines magnetic storage within hard drives?
A)Thermal fluctuations cause superparamagnetism✓
B)Oxidation forms non-magnetic surface layers
C)Mechanical stress causes crystalline defects
D)Cosmic radiation induces material transformation
💡 Explanation
Superparamagnetism limits data density increase, because thermal fluctuations destabilize small ferromagnetic domains overcoming the energy barrier. Because magnetic orientation becomes random, thermal fluctuation increases superparamagnetism, therefore data is lost, rather than stress induced crystal defects.
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