Transport and Electromechanical Properties of Ca3TaGa3Si2O14 Piezoelectric Crystals at Extreme Temperatures

dc.bibliographicCitation.firstPage515
dc.bibliographicCitation.journalTitleMRS Advanceseng
dc.bibliographicCitation.lastPage521
dc.bibliographicCitation.volume4
dc.contributor.authorSuhak, Yuriy
dc.contributor.authorJohnson, Ward L.
dc.contributor.authorSotnikov, Andrei
dc.contributor.authorSchmidt, Hagen
dc.contributor.authorFritze, Holger
dc.date.accessioned2022-12-05T09:41:57Z
dc.date.available2022-12-05T09:41:57Z
dc.date.issued2019
dc.description.abstractTransport mechanisms in structurally ordered piezoelectric Ca3TaGa3Si2O14 (CTGS) single crystals are studied in the temperature range of 1000-1300 °C by application of the isotope 18O as a tracer and subsequent analysis of diffusion profiles of this isotope using secondary ion mass spectrometry (SIMS). Determined oxygen self-diffusion coefficients enable calculation of oxygen ion contribution to the total conductivity, which is shown to be small. Since very low contributions of the cations have to be expected, the total conductivity must be dominated by electron transport. Ion and electron conductivities are governed by different mechanisms with activation energies (1.9±0.1) eV and (1.2±0.07) eV, respectively. Further, the electromechanical losses are studied as a function of temperature by means of impedance spectroscopy on samples with electrodes and a contactless tone-burst excitation technique. At temperatures above 650 °C the conductivity-related losses are dominant. Finally, the operation of CTGS resonators is demonstrated at cryogenic temperatures and materials piezoelectric strain constants are determined from 4.2 K to room temperature. Copyright © Materials Research Society 2019.eng
dc.description.versionpublishedVersion
dc.identifier.urihttps://oa.tib.eu/renate/handle/123456789/10493
dc.identifier.urihttp://dx.doi.org/10.34657/9529
dc.language.isoeng
dc.publisherCham : Springer Nature Switzerland
dc.relation.doihttps://doi.org/10.1557/adv.2019.16
dc.relation.essn2059-8521
dc.rights.licenseCC BY 4.0 Unported
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subject.ddc670
dc.subject.othercrystaleng
dc.subject.otherelectrical propertieseng
dc.subject.otherpiezoelectriceng
dc.subject.othersensoreng
dc.titleTransport and Electromechanical Properties of Ca3TaGa3Si2O14 Piezoelectric Crystals at Extreme Temperatureseng
dc.typeArticleeng
dc.typeTexteng
tib.accessRightsopenAccess
wgl.contributorIFWD
wgl.subjectChemieger
wgl.typeZeitschriftenartikelger
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