%0 Journal Article
%T High temperature piezoelectric properties of flux-grown α-GeO 2 single crystal
%+ Institut Charles Gerhardt Montpellier - Institut de Chimie Moléculaire et des Matériaux de Montpellier (ICGM)
%+ Laboratoire Charles Coulomb (L2C)
%+ Cristaux massifs (NEEL - CrisMass)
%+ Optique et Matériaux (NEEL - OPTIMA)
%A Papet, Philippe
%A Bah, Micka
%A Haidoux, Abel
%A Ruffle, Benoit
%A Ménaert, Bertrand
%A Pena Revellez, Alexandra
%A Debray, Jérôme
%A Armand, Pascale
%< avec comité de lecture
%@ 0021-8979
%J Journal of Applied Physics
%I American Institute of Physics
%V 126
%N 14
%P 144102
%8 2019-10-14
%D 2019
%R 10.1063/1.5116026
%Z Chemical Sciences/Material chemistry
%Z Chemical Sciences/Inorganic chemistry
%Z Physics [physics]/Condensed Matter [cond-mat]/Materials Science [cond-mat.mtrl-sci]Journal articles
%X The temperature-dependence of the piezoelectric properties of trigonal -GeO2 single-crystals obtained by the high-temperature flux method was measured by the resonance technique of the electrical impedance in the 20°C-600°C range. To approach the values of the two independent piezoelectric coefficients d11 and d14, we first measured as a function of temperature the elastic coefficients S11, S14 and S66 and the dielectric permittivity 11 which are involved in the coupling coefficient k of both the thickness shear mode and the transverse mode. A Y-cut plate with a simple +45°-rotation ((YXtwl) +45°/0°/0°) was used to measure the coupling coefficient of the thickness shear mode, and two X-turned plates ((XYtwl) +45°/0°/0° and (XYtwl)-45°/0°/0°) were prepared to characterize the coupling coefficient of two transverse modes. From the whole experimental measurements, the piezoelectric coefficients of -GeO2 were calculated up to 600 °C. They show that this crystal is one of the most efficient in regard of the -quartz-like family at room temperature, and that its thermal comportment retains large piezoelectric properties up to 600°C.
%G English
%2 https://hal.science/hal-02316058/document
%2 https://hal.science/hal-02316058/file/JAP19-AR-03725.pdf
%L hal-02316058
%U https://hal.science/hal-02316058
%~ UGA
%~ CNRS
%~ ENSC-MONTPELLIER
%~ INPG
%~ NEEL
%~ ICG
%~ L2C
%~ INC-CNRS
%~ NEEL-OPTIMA
%~ NEEL-CRISMASS
%~ MIPS
%~ CHIMIE
%~ UNIV-MONTPELLIER
%~ TEST-HALCNRS
%~ UGA-COMUE
%~ ANR
%~ UM-2015-2021
%~ NEEL-TECHNO