Characterization and temperature sensor application of Ca<inf>3</inf>TaGa<inf>3</inf>Si<inf>2</inf>O<inf>14</inf> crystals

Abstract

In this paper, the elastic, piezoelectric, and dielectric constants of Ca ₃ TaGa ₃ Si ₂ O ₁₄ (CTGS) single crystals were fully characterized from room temperature to 800°C according to IEEE standard methods. The sensitivity and stability of the temperature sensors based on CTGS crystals were also investigated. One of the elastic stiffness constants-c ₁₁ ^E shows the highest temperature sensitivity. The results of the repeated measurements of X-cut square-plate resonator sample indicate its excellent stability through the entire measurement temperature range.