High electromechanical coupling piezoelectrics: Relaxor and normal ferroelectric solid solutions

ArticleinSolid State Ionics 108(1):43-52 · May 1998with11 Reads
Impact Factor: 2.56 · DOI: 10.1016/S0167-2738(98)00017-4

    Abstract

    A new category of piezoelectric ceramics with very high electromechanical coupling was discovered in a lead zinc niobate–lead titanate solid solution in a single crystal form. The maximum coupling factor k33 reaches 95%, which corresponds to the energy conversion rate twice as high as the conventional lead zirconate titanate ceramics. This paper reviews the previous studies on superior piezoelectricity in relaxor ferroelectric: lead titanate solid solutions and on the possible mechanisms of this high electromechanical coupling.