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Piezoelectric Ca3NbGa3Si2O14 crystal: crystal growth, piezoelectric and acoustic properties

  • Ca3NbGa3Si2O14 (CNGS), a five-component crystal of lanthanum-gallium silicate group, was grown by the Czochralski method. The parameters of the elementary unit cell of the crystal were measured by powder diffraction. The independent piezoelectric strain coefficients d(11) and d(14) were determined by the triple-axis X-ray diffraction in the Bragg and Laue geometries. Excitation and propagation of surface acoustic waves (SAW) were studied by high-resolution X-ray diffraction at BESSY II synchrotron radiation source. The velocity of SAW propagation and power flow angles in the Y-, X-and yxl/+36 degrees-cuts of the CNGS crystal were determined from the analysis of the diffraction spectra. The CNGS crystal was found practically isotropic by its acoustic properties.

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Author:Dmitry Roshchupkin, Luc Ortega, Olga Plotitcyna, Alexei Erko, Ivo Zizak, Simone Vadilonga, Dmitry Irzhak, Evgenii Emelin, Oleg Buzanov, Wolfram Leitenberger
Parent Title (English):Journal of geophysical research : Space physics
Place of publication:New York
Document Type:Article
Year of first Publication:2016
Year of Completion:2016
Release Date:2020/03/22
First Page:2803
Last Page:2812
Funder:Russian Foundation for Basic Research [16-0200519]; NUST "MISiS" [K1-2015-046]
Organizational units:Mathematisch-Naturwissenschaftliche Fakultät / Institut für Physik und Astronomie
Peer Review:Referiert