Investigation of the Effects of Reduced Sintering Temperature on Dielectric, Ferroelectric and Energy Storage Properties of Microwave-Sintered PLZT 8/60/40 Ceramics

Ajeet Kumar, Sivanagi Reddy Emani, K. C. James Raju, Jungho Ryu and A. R. James
Additional contact information
Ajeet Kumar: School of Materials Science and Engineering, Yeungnam University, Gyeongsan 38541, Korea
Sivanagi Reddy Emani: Advanced Centre of Research in High Energy Materials, School of Physics, University of Hyderabad, Hyderabad 500046, India
K. C. James Raju: School of Physics, University of Hyderabad, Hyderabad 500046, India
Jungho Ryu: School of Materials Science and Engineering, Yeungnam University, Gyeongsan 38541, Korea
A. R. James: Ceramics and Composites Group, Defence Metallurgical Research Laboratory, Hyderabad 500058, India

Energies, 2020, vol. 13, issue 23, 1-17

Abstract: In this study, (Pb 0.92 La 0.08 ) (Zr 0.60 Ti 0.40 ) O 3 (PLZT 8/60/40) ceramics were synthesized using a high-energy ball-milling technique followed by microwave sintering at different temperatures from 900 °C to 1200 °C. The optimal microwave sintering temperature for the PLZT 8/60/40 ceramics was found to be 1150 °C, which is relatively low compared with conventional sintering temperature. The sintered ceramics show the pure perovskite phase, uniform grain microstructure (1.2 µm) and high density (~99.5%). The polarization vs. electric field ( P-E ) hysteresis curves were used to investigate the ferroelectric and energy storage properties. The switching characteristic in P-E loops and occurrence of domain switching current in current vs. electric field ( I-E ) loops confirms their ferroelectric nature. The PLZT ceramics, which were sintered at 1150 °C, show the highest remnant polarization ( P r ) of ~32.18 μC/cm 2 and domain switching current ( I max ) of ~0.91 mA with a low coercive field ( E c ) of ~10.17 kV/cm. The bipolar and unipolar strain vs. electric field ( S-E ) hysteresis loops were also measured and the highest unipolar strain was found to be ~0.26% for the PLZT ceramics sintered at 1150 °C. The unipolar S-E curves were used to derive the piezoelectric coefficient ( d 33 ~495 pm/V) and a strain hysteresis loss (~5.8%).

Keywords: microwave sintering; lead lanthanum zirconate titanate; dielectric properties; piezoelectric properties; ferroelectric properties; energy storage (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
References: View references in EconPapers View complete reference list from CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/13/23/6457/pdf (application/pdf)
https://www.mdpi.com/1996-1073/13/23/6457/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:13:y:2020:i:23:p:6457-:d:457895

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().