Abstract
The influence of K/sup 1+/ co-modification on the structure-property relationships of base PLZT 100y/65/35 ceramics has been investigated. For 4/65/35, K/sup 1+/ modification resulted in a dramatic decrease (/spl sim/10/spl times/) in the magnitude of the induced strain, the development of a pinned polarization and a dramatic reduction in domain size and change in domain morphology. For 7/65/35 with increasing K/sup 1+/ concentration, only minor changes in the e-E response and a crossover between nanodomains and normal micron-sized domains occurred. For 12/65/35, significant increases in the magnitude of the induced strain were found, and an increase in the nanodomain size occurred. These results are discussed in terms of the influence of impurity/defect pinning sites and their distributions on domain stability and polarization switching.
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