Analysis of SAW Temperature Properties in KTiOPO4 Single Crystal

Rinat Taziev; Victor Atuchin

doi:10.3390/ma16010069

Analysis of SAW Temperature Properties in KTiOPO₄ Single Crystal

Materials (Basel). 2022 Dec 21;16(1):69. doi: 10.3390/ma16010069.

Authors

Rinat Taziev¹, Victor Atuchin^{1

2

3

4}

Affiliations

¹ Laboratory of Optical Materials and Structures, Institute of Semiconductor Physics, SB RAS, 630090 Novosibirsk, Russia.
² Research and Development Department, Kemerovo State University, 650000 Kemerovo, Russia.
³ Department of Industrial Machinery Design, Novosibirsk State Technical University, 630073 Novosibirsk, Russia.
⁴ R&D Center "Advanced Electronic Technologies", Tomsk State University, 634034 Tomsk, Russia.

Abstract

The surface acoustic wave (SAW) properties of potassium titanyl phosphate (KTiOPO₄, KTP) single crystal were evaluated by numerical methods. The phase velocity, electromechanical coupling coefficient, power flow deflection angle, and temperature coefficient of delay (TCD) were determined for different crystal cuts of KTP. It was shown that SAW has the electromechanical coupling coefficient of 0.59% and the TCD of 62 ppm/°C on the Z-cut and wave propagation direction along the crystal X + 70°-axis. For the Z-cut and wave propagation direction along the X-axis, the pseudo-surface wave (PSAW) is characterized by the coupling coefficient of 0.46% and the TCD value of 57 ppm/°C. The Bleustein-Gulyaev (BG) wave has the TCD value of 35 ppm/°C and 41 ppm/°C on the Y- and X-cuts of KTP, respectively.

Keywords: KTiOPO4; piezoelectric; surface acoustic wave; temperature coefficient of delay.

Grants and funding

This research received no external funding.