Detail publikace

Noise in Piezoceramics

MAJZNER, J. SEDLÁK, P. ŠTRUNC, M. ŠIKULA, J.

Originální název

Noise in Piezoceramics

Typ

článek ve sborníku ve WoS nebo Scopus

Jazyk

angličtina

Originální abstrakt

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.

Klíčová slova

piezoelectric ceramics, noise

Autoři

MAJZNER, J.; SEDLÁK, P.; ŠTRUNC, M.; ŠIKULA, J.

Rok RIV

2007

Vydáno

1. 1. 2007

Nakladatel

american institute of physics

Místo

USA

ISBN

978-0-7354-0432-8

Kniha

Noise and Fluctuation

Edice

1

Číslo edice

1

Strany od

347

Strany do

350

Strany počet

4

BibTex

@inproceedings{BUT27835,
  author="Jiří {Majzner} and Petr {Sedlák} and Marian {Štrunc} and Josef {Šikula}",
  title="Noise in Piezoceramics",
  booktitle="Noise and Fluctuation",
  year="2007",
  series="1",
  number="1",
  pages="347--350",
  publisher="american institute of physics",
  address="USA",
  isbn="978-0-7354-0432-8"
}