Ferroelectric and piezoelectric properties of Aurivillius phase intergrowth ferroelectrics and the underlying materials design
Ferroelectric and piezoelectric properties of the La-doped intergrowth Aurivillius phase ceramics Bi 5-xLa xTiNbWO 15 and Bi 7-xLa xTi 4NbO 21 (x = 0.00-1.75) were studied. It was found that the La doping is in favour of the domain switching. Owing to the impact of defects, the P-E hysteresis loops of the La-doped Bi 5TiNbWO 15 ceramics are un-symmetrical and the piezoelectric coefficients are quite low. Enhanced ferro-/piezoelectric properties, such as 2P r of 24.4 μC/cm 2 (x = 0.50) and d 33...[Show more]
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|Source:||Physica Status Solidi A|
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