Tetragonal to rhombohedral transformation in the lead zirconium titanate lead magnesium niobate-lead titanate crystalline solution
- Department of Materials Science and Engineering, and the Materials Research Laboratory, University of Illinois, Urbana, Illinois 61801 (United States)
Evidence of a transformation from tetragonal to rhombohedral phases in a 80/20 mixture of lead ziconate titanate (PZT) (53/47) and lead magnesium niobate-lead titanate (PMN-PT) (65/35) was observed by x-ray diffraction, microstructural analysis, dielectric spectroscopy, and electrically-induced strain measurements. An increase in the electrically-induced strain and remanent polarization were found near 175{degree}C, which was significantly below the transition temperature (370{degree}C). Near this temperature, dielectric loss measurements revealed small changes, x-ray diffraction studies demonstrated a reduction in tetragonality, and hot-stage electron diffraction patterns revealed a change in spot splitting along the {l_angle}110{r_angle}. At room temperature, bright-field imaging revealed that normal size domains coexisted with polar nanodomains. These results are then compared to corresponding investigations of PZT and PMN-PT morphotropic phase boundary compositions. {copyright} {ital 1998 American Institute of Physics.}
- OSTI ID:
- 565621
- Journal Information:
- Journal of Applied Physics, Vol. 83, Issue 1; Other Information: PBD: Jan 1998
- Country of Publication:
- United States
- Language:
- English
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