Noise in piezoelectric ceramics at the low temperatures
Loading...
Date
2011-04
Authors
ORCID
Advisor
Referee
Mark
Journal Title
Journal ISSN
Volume Title
Publisher
Společnost pro radioelektronické inženýrství
Abstract
The piezoelectric ceramic belongs to materials with widespread spectrum of applications. It can be found in sensors as well as in ceramic capacitors. The main sources of voltage or current fluctuation in piezoelectric ceramics are thermal noise, polarization noise and low frequency 1/f noise. The observed spectra of fluctuating voltage or current can be very well described by the generalized Nyquist relation for linear dissipative system. In this work, we focused on validity of the Nyquist relation for piezoelectric ceramics in temperatures 150 K-270 K. The electrical impedance and noise spectral density are measured and compared in frequency range 100 kHz - 1 MHz. The measurements were made in thermal stable condition and under equilibrium conditions in the case of noise measurement.
Description
Citation
Radioengineering. 2011, vol. 20, č. 1, s. 200-203. ISSN 1210-2512
http://www.radioeng.cz/fulltexts/2011/11_01_200_203.pdf
http://www.radioeng.cz/fulltexts/2011/11_01_200_203.pdf
Document type
Peer-reviewed
Document version
Published version
Date of access to the full text
Language of document
en