Analysis of switching current data in KTA single crystals

We present the results of analysis of the switching current during polarization reversal in wide field range in KTA single crystals. According to previously revealed stages of domain structure evolution, the switching current data have been separated into three parts. The first original hatching sta...

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Bibliographic Details
Published in:Ferroelectrics 2020-04, Vol.559 (1), p.1-7
Main Authors: Akhmatkhanov, A. R., Chuvakova, M. A., Dolgushin, N. A., Kolker, D. B., Vedenyapin, V. N., Isaenko, L. I., Shur, V. Ya
Format: Article
Language:English
Subjects:
Crystal structure
Crystals
domain kinetics
Hatching
Kolmogorov-Avrami formula
KTiOAsO
polarization reversal
Single crystals
Switching
switching current
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Summary:We present the results of analysis of the switching current during polarization reversal in wide field range in KTA single crystals. According to previously revealed stages of domain structure evolution, the switching current data have been separated into three parts. The first original hatching stage representing growth of streamer clusters with smooth current has been revealed. Fitting of the switching current by Kolmogorov-Avrami formula has allowed extracting the main characteristic times, which followed the activation field dependence. It has been demonstrated that the fraction of the area switched by hatching is almost the same for the whole field range.
ISSN:0015-0193
1563-5112
DOI:10.1080/00150193.2020.1721998