Dependence of structure-property relations on substituent distributions in lead zirconate titanate

Authors: Tan Q.; Xu Z.; Viehland D.

Source: Philosophical Magazine B, Volume 80, Number 8, 11 July 2000 , pp. 1585-1597(13)

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Abstract:

The dependence of substituent distributions on A and B sites in rhombohedral lead zirconate titanate (PZT) was investigated in terms of dielectric spectroscopy, polarization switching characteristics and transmission electron microscopy techniques. Decreasing the higher-valence A-site substituent radii resulted in higher coercive fields, a smaller decrease in transition temperatures and the disappearance of relaxor characteristics with respect to the largest A-site substituents La³⁺. These smaller substituents have enhanced the tendency to exchange on to B sites, resulting in an effective lower-valence substituent, 'wavy' domain morphology and 'hard' PZT properties.

Language: English

Document Type: Research article

Publication date: 2000-07-11

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