Hysteresis measurements of lead-free ferroelectric ceramics BNBK79 (Bi 0.5Na0.5) TiO3-(Bi0.5K 0.5) TiO3-BaTiO3

J. Linhart, P. Hana, L. Burianova, Shujun Zhang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

1 Scopus citations

Abstract

The research deals with nonlinear properties of piezoelectric, ferroelectric and mechanical response of the lead-free type ferroelectric ceramics x(Bi0.5 Na0.5) TiO3-y(Bi0.5 K0.5) TiO3-zBaTiO3, where x 0.79, y 0.14, and z 0.07, in short form BNBK79. Small mechanical deformation and polarization measurements are realized using LVDT (Linear Variable Differential Transformer) measuring system. Velocities of ultrasound wave propagation in presence of an external DC electric field are also determined. The orientation of spontaneous polarization can be switched under the action of sufficiently strong electric fields. This causes the nonlinear behaviour of polarization-electric field (D-E), strain-electric field (S-E) and the velocity of ultrasonic waves-electric field (v-E) relationship. Butterfly shape of the responses is observed above the coercive field. The described BNBK79 ceramics is significant candidate for lead-free actuator applications.

Original languageEnglish (US)
Title of host publication2011 10th International Workshop on Electronics, Control, Measurement and Signals, ECMS 11
DOIs
StatePublished - Aug 29 2011
Event2011 10th International Workshop on Electronics, Control, Measurement and Signals, ECMS 11 - Liberec, Czech Republic
Duration: Jun 1 2011Jun 3 2011

Publication series

Name2011 10th International Workshop on Electronics, Control, Measurement and Signals, ECMS 11

Other

Other2011 10th International Workshop on Electronics, Control, Measurement and Signals, ECMS 11
CountryCzech Republic
CityLiberec
Period6/1/116/3/11

All Science Journal Classification (ASJC) codes

  • Control and Systems Engineering
  • Electrical and Electronic Engineering

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    Linhart, J., Hana, P., Burianova, L., & Zhang, S. (2011). Hysteresis measurements of lead-free ferroelectric ceramics BNBK79 (Bi 0.5Na0.5) TiO3-(Bi0.5K 0.5) TiO3-BaTiO3. In 2011 10th International Workshop on Electronics, Control, Measurement and Signals, ECMS 11 [5952379] (2011 10th International Workshop on Electronics, Control, Measurement and Signals, ECMS 11). https://doi.org/10.1109/IWECMS.2011.5952379