Noise in Piezoceramics

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F07%3APU70419" target="_blank" >RIV/00216305:26220/07:PU70419 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

Noise in Piezoceramics

Original language description

Thermal noise and polarisation noise are the main sources of voltage or current fluctuations in piezoceramic samples which are used as acoustic emission sensors. Signal to noise ratio plays important role. Noise is related to energy dissipation and due to that conductivity is proportional to imaginary part of susceptibility and to the frequency. The measured noise spectral density is 1/f type, but it is not related to the mobility fluctuations in this case, because no DC current or voltage was applied on the sample. Physical quantity SU/RS shows that in all frequency range SU/RS is a constant in the first approximation and it is very near to 4kT. There is no source of 1/f fluctuations caused by mobility fluctuations.

Czech name

Noise in Piezoceramics

Czech description

Thermal noise and polarisation noise are the main sources of voltage or current fluctuations in piezoceramic samples which are used as acoustic emission sensors. Signal to noise ratio plays important role. Noise is related to energy dissipation and due to that conductivity is proportional to imaginary part of susceptibility and to the frequency. The measured noise spectral density is 1/f type, but it is not related to the mobility fluctuations in this case, because no DC current or voltage was applied on the sample. Physical quantity SU/RS shows that in all frequency range SU/RS is a constant in the first approximation and it is very near to 4kT. There is no source of 1/f fluctuations caused by mobility fluctuations.

Type

D - Article in proceedings

CEP classification

JA - Electronics and optoelectronics

OECD FORD branch

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Project

<a href="/en/project/GA102%2F06%2F0866" target="_blank" >GA102/06/0866: Nonlinear electroultrasonic spectroscopy of solids</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2007

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Noise and Fluctuation

ISBN

978-0-7354-0432-8

ISSN

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e-ISSN

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Number of pages

4

Pages from-to

347-350

Publisher name

american institute of physics

Place of publication

USA

Event location

Tokyo

Event date

Sep 9, 2007

Type of event by nationality

WRD - Celosvětová akce

UT code for WoS article

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