Domain structure-property relations in lead lanthanum zirconate titanate ceramics
Journal Article
·
· Journal of Materials Research
- Department of Engineering Materials, The University of Sheffield, Sheffield, S1 3JD (United Kingdom)
The domain structure and dielectric properties as a function of lanthanum concentration and Zr/Ti ratio have been investigated in rhombohedral and tetragonal lead lanthanum zirconate titanate (PLZT) ceramics. Transmission electron microscopy revealed that, with increasing lanthanum concentration and Zr/Ti ratio, the long-range-ordered domains (macrodomains) reduced in width, initially being fine scale (20 nm) striations, but eventually forming a {open_quote}{open_quote}mottled{close_quote}{close_quote} contrast (5 nm), characteristic of a relaxor. Relative permittivity measurements as a function of temperature revealed a correlation between broadening of the dielectric maxima and the onset of relaxor-type behavior with the appearance of the striations and mottled (relaxor) contrast, respectively. {copyright} {ital 1996 Materials Research Society.}
- OSTI ID:
- 392676
- Journal Information:
- Journal of Materials Research, Journal Name: Journal of Materials Research Journal Issue: 9 Vol. 11; ISSN JMREEE; ISSN 0884-2914
- Country of Publication:
- United States
- Language:
- English
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