Borkar, Hitesh and Tomar, M. and Gupta, Vinay and Katiyar, Ram S. and Scott, J. F. and Kumar, Ashok (2017) Optically controlled polarization in highly oriented ferroelectric thin films. Materials Research Express, 4 (08640). pp. 1-9. ISSN 2053-1591

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Abstract

The out-of-plane and in-plane polarization of (Pb0.6Li0.2Bi0.2)(Zr0.2Ti0.8)O-3 (PLBZT) thin film has been studied in the dark and under illumination from a weak light source of a comparable bandgap. A highly oriented PLBZT thin film was grown on a LaNiO3/LaAlO3 substrate by pulsed laser deposition; it showed well-saturated polarization which was significantly enhanced under light illumination. We employed two configurations for polarization characterization: the first deals with out-of-plane polarization with a single capacitor under investigation, whereas the second uses two capacitors connected in series via the bottom electrode. Two different configurations were illuminated using different energy sources and their effects were studied. The latter configuration shows a significant change in polarization under light illumination that may provide an extra degree of freedom for device miniaturization. The polarization was also tested using positive-up and negative-down measurements, confirming robust polarization and its switching under illumination.

Item Type:	Article
Additional Information:	copyright for this article belongs to M\S IOP Publishing.
Subjects:	Materials Science
Divisions:	UNSPECIFIED
Depositing User:	Users 27 not found.
Date Deposited:	07 Dec 2018 07:36
Last Modified:	07 Dec 2018 07:36
URI:	http://npl.csircentral.net/id/eprint/2814

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