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← ScienceWhich phenomenon causes pinned magnetic domains in ferromagnetic materials?
A)Magnetocrystalline anisotropy prevents domain wall motion✓
B)Thermal fluctuations demagnetize saturated regions
C)Exchange interactions align spins dynamically
D)Eddy current damping limits wall velocity
💡 Explanation
Magnetocrystalline anisotropy causes pinning because certain crystal orientations favor magnetization. In this, domain mobility is restricted by energy barriers, therefore hindering uniform magnetization rather than allowing easy alignment or thermal equilibrium which would mitigate this halting.
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