Sodium-potassium niobate (Na1-xKxNbO3) ceramic pellets were prepared, near equimolar Na- K composition, by solid state reaction method with double sintering. Remnant polarization, coercive field, polarization current and converse piezoelectric coefficient (d*33) of the prepared samples were measured. The observed properties exhibit strong composition dependence- a morphotropic phase transition type behavior, showing extremal piezoelectric properties for potential lead free transducer applications, at the composition with x = 0.500.
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Singh et al. (2020) studied this question.
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