Study of Y-cut LiNbO3 (010) crystal under oscillated vibration at high temperature for energy harvesting in hostile environment

Author

Le Boulbar, E.D. ; Bowen, C.R.

Author_Institution

Dept. of Mech. Eng., Univ. of Bath, Bath, UK

fYear

2015

fDate

24-27 May 2015

Firstpage

292

Lastpage

295

Abstract

In this study we report the energy harvesting via piezoelectric Y-cut LiNbO₃ (010) crystal under oscillated vibration at temperature from 200°C to 500°C. The aim of the study was to investigate to the potential of LiNbO₃ for high temperature applications rather than to optimize the design of the harvester. The conductivity, relative permittivity and loss tangent of LiNbO₃ was assessed via impedance spectroscopy measurements by raising the temperature from 50°C to 750°C and back to 50°C. The output voltage under resonant frequency was found to be stable from 200°C to 400°C and collapsed at 500°C due to the loss in the spring stiffness of the load spring.

Keywords

dielectric losses; elastic constants; electrical conductivity; energy harvesting; lithium compounds; permittivity; piezoelectric transducers; piezoelectricity; vibrations; LiNbO₃; conductivity; energy harvesting; high temperature applications; hostile environment; impedance spectroscopy measurements; load spring; loss tangent; oscillated vibration; output voltage; piezoelectric Y-cut (010) crystal; relative permittivity; resonant frequency; spring stiffness; temperature 50 degC to 750 degC; Crystals; Energy harvesting; Lithium niobate; Temperature; Temperature measurement; Temperature sensors; Vibrations; LiNbO3 single crystal; energy harvesting; high temperature; impedance spectroscopy; vibration;

fLanguage

English

Publisher

ieee

Conference_Titel

Applications of Ferroelectric, International Symposium on Integrated Functionalities and Piezoelectric Force Microscopy Workshop (ISAF/ISIF/PFM), 2015 Joint IEEE International Symposium on the

Conference_Location

Singapore

Type

conf

DOI

10.1109/ISAF.2015.7172729

Filename

7172729