High-temperature behavior of housed piezoelectric resonators based on CTGS

<p>A temperature sensor based on piezoelectric single crystals allowing stable operation in harsh environments such as extreme temperatures and highly reducing or oxidizing atmospheres is presented. The temperature dependence of the mechanical stiffness of thickness shear mode resonators is us...

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Autores principales:	M. Schulz, R. Ghanavati, F. Kohler, J. Wilde, H. Fritze
Formato:	article
Lenguaje:	EN
Publicado:	Copernicus Publications 2021
Materias:	Technology T
Acceso en línea:	https://doaj.org/article/dabc0f3c035b4fbe99df4f808d1c9e12
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spelling	oai:doaj.org-article:dabc0f3c035b4fbe99df4f808d1c9e122021-11-19T10:24:08ZHigh-temperature behavior of housed piezoelectric resonators based on CTGS10.5194/jsss-10-271-20212194-87712194-878Xhttps://doaj.org/article/dabc0f3c035b4fbe99df4f808d1c9e122021-11-01T00:00:00Zhttps://jsss.copernicus.org/articles/10/271/2021/jsss-10-271-2021.pdfhttps://doaj.org/toc/2194-8771https://doaj.org/toc/2194-878X<p>A temperature sensor based on piezoelectric single crystals allowing stable operation in harsh environments such as extreme temperatures and highly reducing or oxidizing atmospheres is presented. The temperature dependence of the mechanical stiffness of thickness shear mode resonators is used to determine temperature changes. The sensor is based on catangasite (<span class="inline-formula">Ca<sub>3</sub>TaGa<sub>3</sub>Si<sub>2</sub>O<sub>14</sub></span> – CTGS), a member of a langasite crystal family. CTGS exhibits an ordered crystal structure and low acoustic losses, even at 1000 <span class="inline-formula"><sup>∘</sup></span>C.</p> <p>The resonance frequency and quality factor of unhoused and of housed CTGS resonators are measured up to about 1030 <span class="inline-formula"><sup>∘</sup></span>C. A temperature coefficient of the resonance frequency of about 200 Hz K<span class="inline-formula"><sup>−1</sup></span> for a 5 MHz device is found and enables determination of temperature changes as small as 0.04 K. Housed CTGS resonators do not show any significant change in the resonance behavior during a 30 d, long-term test at 711 <span class="inline-formula"><sup>∘</sup></span>C.</p>M. SchulzR. GhanavatiF. KohlerJ. WildeH. FritzeCopernicus PublicationsarticleTechnologyTENJournal of Sensors and Sensor Systems, Vol 10, Pp 271-279 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Technology T
spellingShingle	Technology T M. Schulz R. Ghanavati F. Kohler J. Wilde H. Fritze High-temperature behavior of housed piezoelectric resonators based on CTGS
description	<p>A temperature sensor based on piezoelectric single crystals allowing stable operation in harsh environments such as extreme temperatures and highly reducing or oxidizing atmospheres is presented. The temperature dependence of the mechanical stiffness of thickness shear mode resonators is used to determine temperature changes. The sensor is based on catangasite (<span class="inline-formula">Ca<sub>3</sub>TaGa<sub>3</sub>Si<sub>2</sub>O<sub>14</sub></span> – CTGS), a member of a langasite crystal family. CTGS exhibits an ordered crystal structure and low acoustic losses, even at 1000 <span class="inline-formula"><sup>∘</sup></span>C.</p> <p>The resonance frequency and quality factor of unhoused and of housed CTGS resonators are measured up to about 1030 <span class="inline-formula"><sup>∘</sup></span>C. A temperature coefficient of the resonance frequency of about 200 Hz K<span class="inline-formula"><sup>−1</sup></span> for a 5 MHz device is found and enables determination of temperature changes as small as 0.04 K. Housed CTGS resonators do not show any significant change in the resonance behavior during a 30 d, long-term test at 711 <span class="inline-formula"><sup>∘</sup></span>C.</p>
format	article
author	M. Schulz R. Ghanavati F. Kohler J. Wilde H. Fritze
author_facet	M. Schulz R. Ghanavati F. Kohler J. Wilde H. Fritze
author_sort	M. Schulz
title	High-temperature behavior of housed piezoelectric resonators based on CTGS
title_short	High-temperature behavior of housed piezoelectric resonators based on CTGS
title_full	High-temperature behavior of housed piezoelectric resonators based on CTGS
title_fullStr	High-temperature behavior of housed piezoelectric resonators based on CTGS
title_full_unstemmed	High-temperature behavior of housed piezoelectric resonators based on CTGS
title_sort	high-temperature behavior of housed piezoelectric resonators based on ctgs
publisher	Copernicus Publications
publishDate	2021
url	https://doaj.org/article/dabc0f3c035b4fbe99df4f808d1c9e12
work_keys_str_mv	AT mschulz hightemperaturebehaviorofhousedpiezoelectricresonatorsbasedonctgs AT rghanavati hightemperaturebehaviorofhousedpiezoelectricresonatorsbasedonctgs AT fkohler hightemperaturebehaviorofhousedpiezoelectricresonatorsbasedonctgs AT jwilde hightemperaturebehaviorofhousedpiezoelectricresonatorsbasedonctgs AT hfritze hightemperaturebehaviorofhousedpiezoelectricresonatorsbasedonctgs
_version_	1718420289241481216

High-temperature behavior of housed piezoelectric resonators based on CTGS

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