Abstract
Experiments on non-steady-state photoelectromotive force (photo-EMF) excitation are implemented with a P b N i 1 / 3 N b 2 / 3 O 3 crystal at wavelength λ = 660 n m . We study the paraelectric phase of the crystal, which belongs to a very peculiar class of materials—relaxor ferroelectrics. The dependencies of the signal amplitude on the frequency of phase modulation, light intensity, and spatial frequency are measured, and photoelectric parameters such as photoconductivity, diffusion, and Debye screening lengths are estimated from them. The signal characteristics demonstrate nonlinear dependencies on light intensity, which is explained by the laser heating of the medium. An unusual difference in the behavior of the photoconductivity response and non-steady-state photo-EMF is revealed.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
