(Na0.8K0.2)0.5Bi0.5TiO3 thin film: A Pb-free MPB composition with large piezoelectricity

Adityanarayan H. Pandey, Kumarswamy Miriyala, Pravin Varade, N. Shara Sowmya, Ajit R. Kulkarni, N. Venkataramani

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


A Pb-free ferroelectric (Na0.8K0.2)0.5Bi0.5TiO3 (NKBT) thin film is deposited on Pt/Ti/SiO2/Si(100) substrate at 650 oC using pulsed laser deposition technique. This NKBT film is characterized using scanning electron microscopy, x-ray diffraction, Raman spectroscopy, piezoresponse force microscopy, dielectric spectroscopy and PE-loop tracer. The dielectric and ferroelectric properties measured at 1 kHz yields a dielectric constant ε ~564, remnant polarization Pr ~5.5 µC/cm2 and coercive field Ec ~33.7 kV/cm. A high piezoelectric constant d33* ~134 pm/V of NKBT film makes it suitable for a variety of electromechanical devices.

Original languageEnglish
Title of host publicationDAE Solid State Physics Symposium 2019
EditorsVeerendra K. Sharma, C. L. Prajapat, S. M. Yusuf
PublisherAmerican Institute of Physics Inc.
ISBN (Electronic)9780735420250
StatePublished - 5 Nov 2020
Externally publishedYes
Event64th DAE Solid State Physics Symposium 2019, DAE-SSPS 2019 - Jodhpur, Rajasthan, India
Duration: 18 Dec 201922 Dec 2019

Publication series

NameAIP Conference Proceedings
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616


Conference64th DAE Solid State Physics Symposium 2019, DAE-SSPS 2019
CityJodhpur, Rajasthan

ASJC Scopus subject areas

  • General Physics and Astronomy


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