Piezoelectricity and Phase-Transitions of the Mixed-Layer Bismuth Titanate Niobate Bi7ti4nbo21

The piezoelectric properties of the bismuth titanate niobate Bi7Ti4NbO21 have been studied. The two phase transitions at 677 degrees and 856 degrees C are analyzed based on the measured piezoelectric properties. It is shown that the Bi7Ti4NbO21 compound is a ferroelectric until 856 degrees C. Bi3TiNbO9 clusters are shown to exist within Bi7Ti4NbO21 grains. These clusters may be responsible for the small additional piezoelectric activity of the studied material at temperatures higher than 856 degrees C.


Published in:
Journal of the American Ceramic Society, 78, 11, 3142-3144
Year:
1995
ISSN:
0002-7820
Note:
CHU, F Ecole Polytech Fed Lausanne,Ceram Lab,Ch-1015 Lausanne,Switzerland
Td715
Times Cited:14
Cited References Count:5
Laboratories:




 Record created 2006-08-21, last modified 2018-03-17


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