abstract
La-modified lead zirconate titanate (PLZT) thin films were prepared to study their physical properties at macro- and nanoscale. Piezoresponse force microscopy (PFM) studies suggest a local imprint behavior at room temperature. Confirmed by P-E hysteresis loops recorded at 180-300K, the imprint effect at room temperature tends to disappear at lower temperatures. In addition, the remanent polarization gradually increases and then decreases after reaching a maximum at around 243K. This behavior suggests the occurrence of a reentrant dipole glass or an activated electric field effect in the studied PLZT films.
keywords
PIEZORESPONSE FORCE MICROSCOPY; FERROELECTRIC CERAMICS; FREQUENCY-DEPENDENCE; PHASE-CHANGE; RELAXORS; POLARIZATION; KINETICS; HISTORY
subject category
Materials Science; Physics
authors
Melo, M; Araujo, EB; Neradovskaya, EA; Turygin, AP; Esin, AA; Shur, VY; Kholkin, AL
our authors
Andrei Kholkin
Principal Researcheracknowledgements
We would like to express our gratitude to the Brazilian agencies CNPq (Grant 304604/2015-1 and Project 400677/2014-8), CAPES and FAPESP for financial support. M.M. extends thanks to CNPq for sandwich PhD fellowship (232241/2014-7). The work was partially supported by Russian Foundation for Basic Research (grant 16-02-00821-a) and Government of the Russian Federation (act 211, agreement 02.A03.21.0006), and also developed in the scope of Project CICECO-Aveiro Institute of Materials (ref. FCT UID/CTM/50011/2013), financed by national funds through the FCT/MEC and, when applicable, co-financed by FEDER under the PT2020 Partnership Agreement.