Title :
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
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;
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
DOI :
10.1109/ISAF.2015.7172729
