Microwave Acoustic Attenuation in CTGS Single Crystals

Andrei V. Sotnikov; Boris P. Sorokin; Nikita O. AsafievDenis A. ShcherbakovGennady M. KvashninYuriy SuhakHolger FritzeManfred WeihnachtHagen Schmidt

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Microwave Acoustic Attenuation in CTGS Single Crystals

机译：Microwave Acoustic Attenuation in CTGS Single Crystals

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This article presents a study of special material properties of the single crystalline material Ca3TaGa3Si2O14 (CTGS = Catangasite). The comparatively highly ordered crystal structure and acceptable piezoelectric strength make it a candidate for microacoustic applications under extreme conditions. Obviously, low-loss dynamic behavior is typical for this crystal which consequently enables high-temperature use. As a particular challenge, the behavior at gigahertz frequencies is investigated here. For that, High overtone Bulk Acoustic wave Resonator (HBAR) type measurements in the range of 1–6 GHz are performed. The selection of five distinctive propagation directions for exclusively pure or quasi-longitudinal modes enables to derive the dynamic viscosities from the quality factors of HBAR results. The observed frequency dependences exhibit Akhiezer behavior as the predominant loss mechanism in the cases examined.

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《IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control》 |2021年第11期|3423-3429|共7页
作者
Andrei V. Sotnikov; Boris P. Sorokin; Nikita O. AsafievDenis A. ShcherbakovGennady M. KvashninYuriy SuhakHolger FritzeManfred WeihnachtHagen Schmidt;
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作者单位

Leibniz IFW Dresden, SAWLab Saxony, Dresden, Germany;

Technological Institute for Superhard and Novel Carbon Materials, Troitsk, Moscow, Russia;

Institute of Energy Research and Physical Technologies, Clausthal University of Technology, Goslar, GermanyInnoXacs, Dippoldiswalde, Germany;

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正文语种英语
中图分类无线电设备、电信设备;
关键词
Crystals; Resonant frequency; Q-factor; Attenuation; Temperature measurement; Electrodes; Apertures; Acoustic attenuation; catangasite; High overtone Bulk Acoustic wave Resonator (HBAR); microwave frequencies;

Microwave Acoustic Attenuation in CTGS Single Crystals

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