Pressure as a probe of the glassy state of ferroelectrics with random site disorder
Results on lanthanum-modified lead zirconate-titanates (PLZTs) have revealed a pressure-induced crossover from a normal ferroelectric to a relaxor state and the continuous evolution of the dynamics and energetics of the relaxation process. This crossover appears to be a general feature of soft mode ferroelectrics with random site dipolar impurities or polar nanodomains and results from a large decrease in the correlation radius among polar nanodomains -- a unique property of soft mode ferroelectrics.
- Research Organization:
- Sandia National Labs., Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 642800
- Report Number(s):
- SAND--97-1683C; CONF-971201--; ON: DE98002807
- Country of Publication:
- United States
- Language:
- English
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Pressure as a probe of the glassy properties of compositionally disordered soft mode ferroelectrics: (Pb{sub 0.82}La{sub 0.12})(Zr{sub 0.40}Ti{sub 0.60})O{sub 3} (PLZT 12/40/60)
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Conference
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Sun Feb 13 23:00:00 EST 2000
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OSTI ID:751194