首页|The relaxor properties and energy storage performance of Aurivillius compounds with different number of perovskite-like layers
The relaxor properties and energy storage performance of Aurivillius compounds with different number of perovskite-like layers
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NSTL
Elsevier
? 2022 Elsevier B.V.The relaxor properties and energy storage performance of Bi4Ti3O12, PbBi4Ti4O15, Pb2Bi4Ti5O18 and Pb3Bi4Ti6O21 films containing 3, 4, 5 and 6 perovskite-like layers respectively were investigated. The temperature of maximum dielectric constant gradually decreases and phase transition peaks become more and more diffuse as the number of perovskite-like layers increases. The size of domains is reduced from micrometers to tens of nanometers and the boundaries between domains gradually become blurred, which makes the current peak caused by domain inversion gradually diffuse and move towards the center. These changes indicate a gradual increase in relaxor properties. The response of these changes on polarization hysteresis loops under same external electric field is that the hysteresis behavior of polarization becomes weaker and weaker. And the optimal recoverable energy densities of them are 6.8, 18.5, 30.5 and 37.2 J/cm3 with the efficiency of 23%, 60.1%, 72.6% and 76.9%, respectively, under the maximum external electric field of 1000, 1167, 1625 and 2455 kV/cm.
NSTL
Elsevier
