Title :
Influence of asymmetric electrodes on the switching of PZT thin films
Author :
Nigon, R. ; Chidambaram, N. ; Raeder, T.M. ; Muralt, P.
Author_Institution :
Lab. de Ceramiques, EPFL - Ecole Polytech. Fed. de Lausanne, Lausanne, Switzerland
Abstract :
We studied the influence of a work function difference between the electrodes of ferroelectric capacitors on the voltage offset of ferroelectric loops using the parallel plate and interdigitated electrodes configurations. We found there is no influence. However, imprinting caused by leaving the sample in a poled state lead to a voltage offset of the polarization loop following closely a log(t) behavior, where t is the total time the sample stayed in a given poled state.
Keywords :
dielectric polarisation; ferroelectric capacitors; ferroelectric materials; ferroelectric switching; ferroelectric thin films; lead compounds; thin film capacitors; work function; PZT; PZT thin films; asymmetric electrodes; ferroelectric capacitors; ferroelectric loops; ferroelectric switching; interdigitated electrodes; log(t) behavior; parallel plate configurations; polarization loop; poled state; voltage offset; work function; Annealing; Capacitors; Electric fields; Electrodes; Films; Indium tin oxide; Switches; Ferroelectric thin film; interdigitated electrodes; parallel plate electrodes; self-polarization;
Conference_Titel :
Applications of Ferroelectric, International Symposium on Integrated Functionalities and Piezoelectric Force Microscopy Workshop (ISAF/ISIF/PFM), 2015 Joint IEEE International Symposium on the
Conference_Location :
Singapore
DOI :
10.1109/ISAF.2015.7172703
