The effect of electrical (DC) contact poling processes on the ferroelectric and piezoelectric properties of sol–gel and pulsed laser-deposited PZT thin films has been investigated as a function of the poling field, temperature and time. The remnant polarization and piezoelectric coefficient are found to increase with and saturate at dc-poling field of 100- 300 kV/cm, temperature of 100–120 °C and poling time of 10–20 min. as compared with un-poled PZT thin films. The P-E hysteresis loops of poled PLD grown PZT films shows sharper switching behaviour as compared to imbalanced loop in sol-gel grown films. An improvement of piezoelectric and ferroelectric properties of sol–gel PZT thin films is found, as compared to those deposited using pulsed laser deposition (PLD), indicating that a poling process is required for sol–gel PZT thin films. © 2018, © 2018 Taylor &amp; Francis Group, LLC.

Jayanta Parui

Chemistry

School of Advanced Sciences

Chennai Campus

Venkatachalam Natarajan

Martando Rath

Natarajan V

Varadarajan E

Rath M

Ferroelectric films

Ferroelectric materials

Ferroelectricity

Piezoelectricity

Pulsed laser deposition

Pulsed lasers

Sol-gel process

Sol-gels

CONTACT POLING

ELECTRICAL POLING

FERROELECTRIC AND PIEZOELECTRIC PROPERTIES

Ferroelectric property

P-E HYSTERESIS LOOPS

Piezoelectric coefficient

POLING PROCESS

Remnant polarizations

Thin films

Vellore Institute of Technology (VIT) is a private university located in&nbsp;Tamil Nadu, India. Founded in 1984, as Vellore Engineering College, the institution offers 20 undergraduate, 34 postgraduate, four integrated and four research programs. It has campuses in Vellore, Amravati, Bhopal and Chennai.

VIT is one of the top ranked private universities in India according to NIRF, THE and QS Rankings.&nbsp;Govt. of India has recognized&nbsp;VIT, Vellore as an&nbsp;Institution of Eminence. This has allowed VIT to take independent quality initiatives and move up in world ranking.

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VIT University

Studies on piezo coefficients of PLD and sol-gel grown PZT thin film for devices

Integrated Ferroelectrics

By optimizing laser raster scanning conditions and controlling PbO evaporation, we have grown high quality large area PbZr.52Ti.48O3 (PZT) thin films using custom-built off-axis pulsed laser deposition (PLD) technique. The realization of high quality PZT thin films over a large area with uniform polarization is a challenging task due to the formation of non-ferroelectric or pyrochlore like PbTi3O7 phases at the processing temperature (&gt;600°C). Our results show the polycrystalline nature of the sample with a uniform chemical surface composition. The macroscopic level of polarization mapping shows excellent saturated P-E loops with a narrow variation (6%) of the remnant polarization (2Pr) across the large area thin films. A comparative study of macroscopic and nanoscale level of mapping of polarization switching are performed, to demonstrate the existence of stoichiometry ferroelectric PZT thin films over a large area. The achievement of high quality large area PZT thin films with uniform polarization might be used for under-water SONAR devices and in power harvesting. © 2018 Elsevier Ltd and Techna Group S.r.l.

Ceramics International

A comparative study on macroscopic and nanoscale polarization mapping on large area PLD grown PZT thin films

Proceedings

Sensitivity of Piezoelectric Ultrasonic Microsensors with Sol-Gel Derived PZT Films Prepared through Various Pyrolysis Temperatures

Journal of Physics: Conference Series

Activation of piezoelectric property of PZT thin films by pulse poling

2014 IEEE International Solid-State Circuits Conference Digest of Technical Papers (ISSCC)

12.1 3D ultrasonic gesture recognition

Science of Advanced Materials

A Fast Room-Temperature Poling Process of Piezoelectric Pb(Zr0.45Ti0.55)O3 Thin Films

Journal	Data powered by TypesetIntegrated Ferroelectrics
Publisher	Data powered by TypesetTaylor and Francis Ltd.
ISSN	10584587
Open Access	No