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The uniaxial compression stress dependence of the phase transitions and dielectric properties of a potassium niobate (KNbO3) ferroelectric crystal were investigated using Landau–Ginsburg–Devonshire phenomenological theory. The results showed that (1) uniaxial stress along [001]c could induce a spontaneous polarization change from the [001]c direction to the [010]c or [100]c directions and from the...
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