Title :
Application of an ultrafast photonic technique to study polarization switching dynamics of thin-film ferroelectric capacitors
Author :
Li, J. ; Liang, H. ; Nagaraj, B. ; Cao, W. ; Lee, Chi H. ; Ramesh, R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Univ. of Maryland, College Park, MD, USA
Abstract :
We demonstrate the use of jitter-free ultrafast rise-time electrical pulses generated by a semiconductor photoconductive switch with femtosecond laser illumination to study the fast polarization switching process in fully integrated, ferroelectric PNZT thin-film capacitors. The necessary conditions for high-speed polarization switching detection are presented. The switching behavior for various sizes of capacitors and various rise-times of applied voltage pulses are investigated. Circuit influence on the activation field, α, as well as application of the Inshibashi-Merz model, are discussed.
Keywords :
dielectric polarisation; ferroelectric capacitors; ferroelectric switching; high-speed optical techniques; lead compounds; measurement by laser beam; photoconducting switches; thin film capacitors; titanium compounds; zirconium compounds; Inshibashi-Merz model; PbNbZrO3TiO3; activation field; fast polarization switching process; femtosecond laser illumination; ferroelectric PNZT thin-film capacitors; high-speed polarization switching detection; integrated PNZT thin film capacitors; jitter-free ultrafast rise-time electrical pulses; polarization switching dynamics; semiconductor photoconductive switch; thin film ferroelectric capacitors; ultrafast photonic technique; Capacitors; Ferroelectric materials; Lighting; Optical pulse generation; Photoconducting devices; Polarization; Semiconductor lasers; Semiconductor thin films; Switches; Transistors;
Journal_Title :
Lightwave Technology, Journal of
DOI :
10.1109/JLT.2003.819781
