Abstract
In this work, Yb3+, Ho3+, and Pr3+ co-doped Ca3NbGa3Si2O14 (Yb:Ho:Pr:CNGS) single crystal was grown by the Czochralski (Cz) method. The properties of the crystal are regulated by doping of rare earth elements. Powder X-ray diffraction (PXRD) was exhibited and the cell parameters were calculated. The dielectric, elastic compliance, and piezoelectric constants were measured and calculated at room temperature, the good performance parameters such as εij/ε0, d11, and s11 were presented. In addition, the temperature dependence of the full set of electroelastic properties in the range of 25 °C–700 °C was provided, and the high temperature stability were also presented. The temperature stability of ε11/ε0, k12, d11 and s11 in the range of 25 °C–700 °C were 3.37 %, 10.97 %, 21.08 % and 11.43 %, respectively. The binding energy of metal-oxygen bond in the crystal was characterized by X-ray photoelectron spectroscopy (XPS). It is also confirmed that the crystal has good optical properties, the fluorescence emission spectrum of 2 μm is obtained, and this crystal could be a potential multifunctional material for the applications of high temperature piezoelectric sensors and flowmeters.
Published Version
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