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

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dc.contributor.authorErhart,Jiří
dc.contributor.authorBijalwan, Vijay
dc.contributor.authorMaca, Karel
dc.contributor.authorSolař, Filip
dc.date.accessioned2020-03-19T10:38:22Z
dc.date.available2020-03-19T10:38:22Z
dc.date.issued2020-02
dc.description.abstractMethod 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.cs
dc.format.extent8 strancs
dc.identifier.doi10.1080/21870764.2020.1732007
dc.identifier.orcid0000-0002-2960-126X Erhart,Jiří
dc.identifier.urihttps://dspace.tul.cz/handle/15240/154628
dc.identifier.urihttps://www.tandfonline.com/doi/full/10.1080/21870764.2020.1732007
dc.language.isocscs
dc.publisherTAYLOR & FRANCIS LTD, 2-4 PARK SQUARE, MILTON PARK, ABINGDON OR14 4RN, OXON, ENGLAND
dc.relation.ispartofJOURNAL OF ASIAN CERAMIC SOCIETIES
dc.subjectLossescs
dc.subjectmechanical quality factorcs
dc.subjectpiezoelectric ceramiccs
dc.subjectPZTcs
dc.subjectBCZTcs
dc.titleDerivation of losses from impedance spectrum for contour modes of ceramic resonatorcs
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