[1] YANG H P, ZHOU X F, FANG H J et al. Study on field-induced strain properties of sodium bismuth titanate based lead-free ferroelectric ceramics[J]. Journal of Inorganic Materials, 603(2022).

[2] WEI Z Q, XIA X, LI Q et al. Preparation and properties of barium titanate/calcium silicate composite bioactive piezoelectric ceramics[J]. Journal of Inorganic Materials, 617(2022).

[3] NAN B, ZANG J D, Lu W L et al. Research progress in manufacturing piezoelectric ceramics with additives[J]. Journal of Inorganic Materials, 585(2022).

[4] BARDONG J, BRUCKNER G, KRAFT M et al. Influence of Packaging Atmospheres on the Durability of High-temperature SAW Sensors[J]. IEEE International Ultrasonics Symposium, Rome, Italy, 1680(2009).

[5] TIAN S, Li L, Lu X et al. Electrical conduction mechanism of rare-earth calcium oxyborate high temperature piezoelectric crystals[J]. Acta Materialia, 165(2020).

[6] LUCAS K, BOUCGY S, BELANGER P et al. High-temperature electrical conductivity in piezoelectric lithium niobate[J]. Journal of Applied Physics, 194102(2022).

[7] OGI H, NAKAMURA N, SATO K et al. Elastic, anelastic, and piezoelectric coefficients of langasite: resonance ultrasound spectroscopy with laser-Doppler interferometry[J]. IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 553(2003).

[8] VIJAY S. Defect Chemistry and DFT Modelling of La₃Ta_0.5Ga_{5. 5}O₁₄[J]. Oslo, Norway: University of Oslo Department of Chemistry(2013).

[9] ZHANG S J, KONG H K, XIA R et al. Growth and high- temperature electromechanical properties of Ca₃NbX₃Si₂O₁₄ (X= Ga and Al) piezoelectric crystals[J]. Solid State Communications, 435(2010).

[10] SHI X Z, YUAN D R, YIN X et al. Crystal growth and dielectric, piezoelectric and elastic properties of Ca₃TaGa₃Si₂O₁₄ single crystal[J]. Solid State Communications, 173(2007).

[11] SEH H, TULLER H L, FRITZE H. Langasite for high-temperature acoustic wave gas sensors[J]. Sensors and Actuators B: Chemical, 169(2003).

[12] FRITZE H, SEH H, TULLER H L et al. Operation limits of langasite high temperature nanobalances[J]. Journal of the European Ceramic Society, 1473(2001).

[13] XIONG K N, ZHENG Y Q, TU X N et al. Growth and high temperature properties of Ca₃Ta(Al_{0. 9}Ga_0.1)₃Si₂O₁₄ crystals with ordered langasite structure[J]. Journal of Crystal Growth, 820(2014).

[14] TANG L G, ZHUANG M H, LI H. Application of ultrasonic resonance spectroscopy in characterization of piezoelectric materials[M]. Journal of Shaanxi Normal University (Natural Science Edition), 44(2019).

[15] TAKEDA H, TANAKA S, LZUKAWA S et al. Effective substitution of aluminum for gallium in langasite-type crystals for a pressure sensor use at high temperature. IEEE International Ultrasonics Symposium[J]. Rotterdam, 560(2005).

[16] BJORHEIM T S, SHANMUGAPPIRABU V, HAUGSRUD R et al. Protons in piezoelectric langatate: La₃Ga_5.5Ta_0.5O₁₄[J]. Solid State Ionics, 275(2015).

[17] ANFIMOV I M, BUZANOV O A, KOZLOVA A P et al. Impedance spectroscopy study of lanthanum-gallium tantalate single crystals grown under different conditions[J]. Modern Electronic Materials, 41(2019).

[18] MALINKOVICH M D, PARKHOMENKO Y N, SKRYLEVA E A et al. XPS study of gallium loss from langasite crystal surface under vacuum annealing[J]. Sensors and Actuators A: Physical, 63(2012).

[19] JOSEPH M, TABATA H, SAEKI H et al. Fabrication of the low- resistive p-type ZnO by codoping method[J]. Physica B: Condensed Matter, 140(2001).