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Temperature behavior of piezoelectric gadolinium calcium oxoborate GdCa4O(BO3)3crystal

✍ Scribed by Markiewicz, E. ;Pawlaczyk, C. ;Kłos, A. ;Hofman, W. ;Pajączkowska, A.

Book ID
105363278
Publisher
John Wiley and Sons
Year
2006
Tongue
English
Weight
201 KB
Volume
203
Category
Article
ISSN
0031-8965

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✦ Synopsis

Abstract

Temperature characteristics of the piezoelectric resonance frequencies of gadolinium calcium oxoborate (GdCOB) were studied for the following crystal cuts and vibration modes: (XYt)ϕ (ϕ= 0__°, 22.5°, 67.5°) bars vibrating in longitudinal mode, (XYt)45° bar vibrating in face‐shear mode and (ZXt)0°__ bar vibrating in longitudinal mode and the temperature/frequency coefficients were estimated. GdCOB crystal of the orientation (XYt)45° exhibited properties most suitable for the application in temperature measuring devices in a wide temperature range (70–450 K). GdCOB crystal of the orientation (ZXt)0__°__ exhibited zero temperature/frequency coefficient with the turning point set in the temperature range 180–210 K depending on the width‐to‐length ratio of the bar. It was found that the temperature behavior of the crystal is very similar to that of the other well known piezoelectric crystals. (© 2006 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim)

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Elastic and piezoelectric properties of
Elastic and piezoelectric properties of gadolinium calcium oxoborate GdCa4O(BO3)3crystal
✍ Pawlaczyk, C. ;Markiewicz, E. ;Kłos, A. ;Hofman, W. ;Pajączkowska, A. 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 666 KB

## Abstract Gadolinium calcium oxoborate, GdCa~4~O(BO~3~)~3~ (GdCOB), single crystals were grown by the Czochralski technique. The orientation of crystal was precisely determined. To estimate the complete matrices of the elastic (13) and piezoelectric (10) coefficients measurements of the complex e

Dielectric constant tensor of piezoelect
Dielectric constant tensor of piezoelectric gadolinium calcium oxoborate crystal, GdCa4O(BO3)3, estimated from the electric impedance spectrum
✍ Pawlaczyk, C. ;Markiewicz, E. ;Kłos, A. ;Pajączkowska, A. 📂 Article 📅 2006 🏛 John Wiley and Sons 🌐 English ⚖ 475 KB

## Abstract A method for obtaining the dielectric coefficients of a piezoelectric crystal from impedance spectrum measurements was proposed. The dielectric coefficients of gadolinium calcium oxoborate, GdCa~4~O(BO~3~)~3~, were evaluated and compared with the literature data. (© 2006 WILEY‐VCH Verla