Ferroelectric domains and incommensuration in the intermediate phase region of lead zirconate
- Univ. of Illinois, Urbana, IL (United States)
- Argonne National Lab., IL (United States). Materials Science Div.
Electron microscopy of lead zirconate (PbZrO{sub 3}) identified the presence of an intermediate region between the high-temperature cubic state and the low-temperature antiferroelectric state. Ferroelectric domains were found to occur between 200 and 230 C on cooling. Convergent-beam electron diffraction studies identified rhombohedral symmetry for the ferroelectric phase. Selected area electron diffraction patterns determined {1/2}{l_brace}110{r_brace} superlattice reflections in the ferroelectric state. The reflections were associated with a softening of an M-type oxygen octahedral rotation mode. In addition, 1/x{l_brace}110{r_brace} incommensurate superlattice reflections were detected within a narrow temperature range for PbZrO{sub 3} between the intermediate ferroelectric and low-temperature antiferroelectric states.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL
- DOE Contract Number:
- FG02-91ER45439; W-31109-ENG-38
- OSTI ID:
- 106013
- Journal Information:
- Journal of the American Ceramic Society, Journal Name: Journal of the American Ceramic Society Journal Issue: 8 Vol. 78; ISSN 0002-7820; ISSN JACTAW
- Country of Publication:
- United States
- Language:
- English
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