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Which mechanism impairs sensor accuracy in ferromagnetic shape memory alloys?

A)Transformation induced plasticity creates dislocation
B)Martensitic phase transition introduces hysteresis
C)Magnetostriction causes unintended strain energy
D)Barkhausen jumps induce magnetic domain noise

💡 Explanation

Barkhausen jumps cause discontinuous changes in magnetization within the alloy because the domain walls abruptly reorient under changing stress. These domain reconfigurations create magnetic noise, severely reducing sensor precision rather than structural instability from plasticity.

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