Publication detail

Derivation of losses from impedance spectrum for contour modes of ceramic resonator

ERHART, J. BIJALWAN, V. SOLAŘ, F. MACA, K.

Original Title

Derivation of losses from impedance spectrum for contour modes of ceramic resonator

Type

journal article in Web of Science

Language

English

Original Abstract

Method of loss coefficients calculation from mechanical quality factors of transversal vibration modes is presented. Theoretical formulae are derived for the contour mode of thin square plate and width extensional mode of a thin rectangular plate. Mechanical quality factors are expressed as a function of loss coefficients for ceramic with known Poisson's ratio. Measured impedance spectra are compared with calculations and used for the characterization of losses on lead-free BCZT and lead-based PZT piezoelectric ceramics. Full set of loss coefficients active for planar vibration modes is characterized on a single sample. Mechanical quality factor at resonance is the same for the contour extensional mode of a thin square plate and for the width extensional mode of a thin rectangular plate. Loss coefficients reach the biggest values for the piezoelectric losses, followed by the dielectric and elastic losses. Our results show that the BCZT ceramics have losses of the same magnitude as soft PZT ceramic.

Keywords

Losses; mechanical quality factor; piezoelectric ceramic; PZT; BCZT

Authors

ERHART, J.; BIJALWAN, V.; SOLAŘ, F.; MACA, K.

Released

2. 4. 2020

Publisher

Taylor & Francis

Location

ABINGDON

ISBN

2187-0764

Periodical

Journal of Asian Ceramic Societies

Year of study

8

Number

2

State

Japan

Pages from

291

Pages to

297

Pages count

7

URL

https://www.tandfonline.com/doi/pdf/10.1080/21870764.2020.1732007

Full text in the Digital Library

http://hdl.handle.net/11012/194861

BibTex

@article{BUT163799,
  author="Jiří {Erhart} and Vijay {Bijalwan} and Filip {Solař} and Karel {Maca}",
  title="Derivation of losses from impedance spectrum for contour modes of ceramic resonator",
  journal="Journal of Asian Ceramic Societies",
  year="2020",
  volume="8",
  number="2",
  pages="291--297",
  doi="10.1080/21870764.2020.1732007",
  issn="2187-0764",
  url="https://www.tandfonline.com/doi/pdf/10.1080/21870764.2020.1732007"
}