Ferroelectric domain gratings and Barkhausen spikes in potassium lithium tantalate niobate
作者:
Xiaolin Tong,
Amnon Yariv,
Min Zhang,
Aharon J. Agranat,
Rudolf Hofmeister,
Victor Leyva,
期刊:
Applied Physics Letters
(AIP Available online 1997)
卷期:
Volume 70,
issue 17
页码: 2241-2243
ISSN:0003-6951
年代: 1997
DOI:10.1063/1.118827
出版商: AIP
数据来源: AIP
摘要:
The observation of Barkhausen current spikes during the recording of volume phase holograms in potassium lithium tantalate niobate is reported on. These spikes are due to the ferroelectric domain reversal induced by photorefractive space charge fields. Both “small” (1 nA) and “large” (100 nA) spikes are observed, which correspond to micro and macro domain reversal, respectively. The diffraction efficiency can change as much as 50&percent; during a single macrodomain switching. ©1997 American Institute of Physics.
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