Analysis of switching current data in KTA single crystals. (25th April 2020)

• Record Type: Journal Article
• Authors: Akhmatkhanov, A. R.; Chuvakova, M. A.; Dolgushin, N. A.; Kolker, D. B.; Vedenyapin, V. N.; Isaenko, L. I.; Shur, V. Ya.
• Is Part Of: Ferroelectrics. Volume 559(2020)
• Page Start: 1
• Page End: 7
• Publication Date: 2020-04-25
• Subjects: KTiOAsO4 -- domain kinetics -- polarization reversal -- switching current -- Kolmogorov-Avrami formula; Ferroelectricity -- Periodicals; Ferroelectric crystals -- Periodicals; 537
• DOI: 10.1080/00150193.2020.1721998
• Languages: English
• ISSNs: 0015-0193

Abstract

Abstract: 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.