Effect of high temperature and poling on the wireless signal detection from soft and hard PZT
- PDF / 2,419,253 Bytes
- 13 Pages / 595.276 x 790.866 pts Page_size
- 45 Downloads / 149 Views
Effect of high temperature and poling on the wireless signal detection from soft and hard PZT Sumeet Kumar Sharma1,*
1
, Ashok Kumar Sivarathri1, and Vishal S. Chauhan1
School of Engineering, Indian Institute of Technology Mandi, Kamand, Himachal Pradesh 175005, India
Received: 23 June 2020
ABSTRACT
Accepted: 22 September 2020
A comparative study of electromagnetic radiation (EMR) detection from Soft PZT (SP 5A) and Hard (SP 4) PZT under impact at high temperatures has been presented. EMR is detected by applying impact load on the samples at temperatures varying from 288 to 514 K. With increase in temperature, thermal energy increases imparting molecular vibrations which reduce the net effective polarization and this in turn results in the low amplitude of EMR signals. EMR voltage amplitude and EMR energy release rate show an overall decreasing pattern with increase in temperature. Experiments conducted on samples poled at different d.c. poling fields exhibit strong dependence of EMR signals on d.c. poling field. EMR voltage amplitude is found to increase with increase in the strength of d.c. poling field. This study pertaining to the effect of poling as well as high temperatures on the EMR signal variation will be an aid towards the development of wireless sensing technique.
Ó
Springer Science+Business
Media, LLC, part of Springer Nature 2020
1 Introduction Early 1950s marked the commercial availability of piezoelectric materials majorly lead zirconate titanate (PZT). Due to their properties such as polarization, development of surface charges when subjected to mechanical loads and strain generation during the application of electric field have made these ceramics popular in the market for their use in terms of sensors and actuators. Wide area of applications of the piezoceramics make them a viable option in comparison to other electro-ceramics. Lead-free materials have been actively explored as a replacement for piezoelectric ceramics over the years due to the
Address correspondence to E-mail: [email protected]
https://doi.org/10.1007/s10854-020-04538-6
toxicity and environmental concerns of lead-based materials. However, most practical materials in the market are still based on lead zirconate titanate (Pb(Zr,Ti)O3: PZT). PZT is a solid solution of PbZrO3 and PbTiO3 which was first studied by Shirane et al. [1] and the phase diagram was reported by Sawaguchi [2]. Furthermore, a detailed description of piezoelectricity was also given by Jaffe et al. [3]. Since then vast no. of reports can be seen in the literature exploring the various properties of piezoelectric materials [4–6]. Generally, the morphotropic phase boundary (MPB) composition of PZT has been used for a wide variety of applications due to its enhanced properties. Use of dopants (donor or acceptor)
J Mater Sci: Mater Electron
significantly modifies the piezoelectric properties which makes them suitable for particular kind of applications. Donor dopants impart the soft, whereas the acceptor impurities impart the hard characteristic
Data Loading...
