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Which outcome impairs piezoelectric crystal sensors approaching Curie temperature?

A)Spontaneous polarization diminishes significantly
B)Crystal lattice fractures permanently
C)Dielectric constant remains nonlinear
D)Hysteresis loop achieves saturation

💡 Explanation

As temperature increases, approaching the Curie temperature, thermal agitation disrupts the alignment of electric dipoles within the crystal lattice; therefore, the spontaneous polarization diminishes, impairing sensing ability, rather than causing fracture or saturation.

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