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In this report, the dielectric and hydrostatic piezoelectric properties of the monoclinic bismuth triborate crystals (BiB3O6, BIBO) were investigated at ambient temperature for potential hydrophone application. The pressure dependence of the hydrostatic charge and voltage coefficients dielectric properties (dh and gh), and hydrostatic figure of merit (FOM) dh×gh, were also studied. Results indicated...
The electronic structure and optical properties of pure and Mn doped NaNbO3 are investigated employing the first principle method based on the density functional theory. The results indicate that the hybridization of Nb 4d and O 2p states play an important role on the piezoelectricity of NaNbO3. The calculated formation energies show that Mn prefers to built into Na sites. Moreover, Mn doping leads...
The Symposium on Piezoelectricity, Acoustic Waves, and Device Applications (SPAWDA) is an interdisciplinary and product-focused technical forum with international flavor, which has been rapidly growing in the last ten years. Under the strong supports from the Chinese Society of Theoretical and Applied Mechanics (CSTAM), the Acoustical Society of China (ASC), and the IEEE UFFC Society (UFFC-S), the...
Structural ordered langasite-type piezoelectric crystal Ca3Ta G a 3Si2O14(CTGS) possess excellent high temperature piezoelectric properties. In this work, large size(25mm in diameter and 80mm in length)CTGS single crystalswere grown by using the vertical Bridgman method. High resolution X-ray diffraction technique was applied to characterize the crystal quality, where the as-grown CTGS crystals were...
The electrical resistivity, dielectric, and electromechanical properties of ReCa4O(BO3)3 (ReCOB; Re = Er, Y, Gd, Sm, Nd, Pr, and La) piezoelectric crystals were investigated as a function of temperature up to 1000°C. Of the studied crystals, ErCOB and YCOB were found to possess extremely high resistivity (p): p >; 3 × 107 ω.cm at 1000°C. The property variation in ReCOB crystals is discussed with...
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