Detail publikace

Measurement of thermal depolarization effects in piezoelectric coefficients of soft PZT ceramics via the frequency and direct methods

FIALKA, J. BENEŠ, P. MICHLOVSKÁ, L. KLUSÁČEK, S. PIKULA, S. DOHNAL, P. HAVRÁNEK, Z.

Originální název

Measurement of thermal depolarization effects in piezoelectric coefficients of soft PZT ceramics via the frequency and direct methods

Typ

článek v časopise ve Web of Science, Jimp

Jazyk

angličtina

Originální abstrakt

Depolarization at high temperatures around the Curie point constitutes an important yet difficultly measurable material property of piezoelectric (PZT) ceramics. The common vibrometric technique (d33 meters) is not suitable for the measurement of temperature dependences, and therefore we used the frequency method to perform the desired procedures. The indicator selected to show the depolarization state in the piezoelectric ceramics consisted in the piezoelectric charge coefficient, whose value can be effectively measured via the above-mentioned frequency technique. The accuracy of the method was verified via comparing a d33 meter constructed by the authors (as described in this paper) and also by means of differently sized cylinders of ceramics NCE51, which are designed for longitudinal length modes. Based on the obtained results, we established a measurement methodology to exactly determine the value of the Curie point that corresponded to the phase transition to a cubic crystallographic structure. The experiment also confirmed the applicability of progressively controlled depolarization of PZT ceramics by high temperature in the range of between 350 and 370 °C, and it defined the temperature limits at which there occur irreversible changes of the piezoelectric properties of PZT ceramics. In the measured NCE51 material, the limit for irreversible changes was equal to 95% of the Curie temperature (368 °C).

Klíčová slova

PZT ceramics; Piezoelectric charge coefficient; Curie temperature; Frequency method; Vibrometric method

Autoři

FIALKA, J.; BENEŠ, P.; MICHLOVSKÁ, L.; KLUSÁČEK, S.; PIKULA, S.; DOHNAL, P.; HAVRÁNEK, Z.

Vydáno

1. 9. 2016

Nakladatel

Elsevier Ltd.

Místo

Elsevier Limited, The Boulevard, Langford Lane, Kidlington, Oxford, OX5 1GB, United Kingdom

ISSN

0955-2219

Periodikum

Journal of the European Ceramic Society

Ročník

36

Číslo

11

Stát

Spojené království Velké Británie a Severního Irska

Strany od

2727

Strany do

2738

Strany počet

12

URL

http://www.sciencedirect.com/science/article/pii/S0955221916301625

Plný text v Digitální knihovně

http://hdl.handle.net/11012/209273

BibTex

@article{BUT124661,
  author="Jiří {Fialka} and Petr {Beneš} and Lenka {Michlovská} and Stanislav {Klusáček} and Stanislav {Pikula} and Přemysl {Dohnal} and Zdeněk {Havránek}",
  title="Measurement of thermal depolarization effects in piezoelectric coefficients of soft PZT ceramics via the frequency and direct methods",
  journal="Journal of the European Ceramic Society",
  year="2016",
  volume="36",
  number="11",
  pages="2727--2738",
  doi="10.1016/j.jeurceramsoc.2016.03.036",
  issn="0955-2219",
  url="http://www.sciencedirect.com/science/article/pii/S0955221916301625"
}