哪些常用材料具有压电特性，并给出相关文献

常见的压电材料包括：

1. 晶体类：如石英晶体、铅锆钛酸钠晶体等；
2. 陶瓷类：如铅酸钡陶瓷、铅酸钛陶瓷、锆钛酸钠陶瓷等；
3. 高分子类：如聚偏氟乙烯、聚乙烯基氟、聚乙烯基三氟乙烯等；
4. 硅酸盐类：如硅酸锂、硅酸铁钾等；
5. 金属类：如锌氧化物、铝氧化物等；

以下是一些相关文献：

1. Gao, W., Wang, L., & Xu, C. (2014). Advances in lead-free piezoelectric materials for sensors and actuators. Sensors, 14(11), 21490-21514.
2. Zhang, S., Zhang, Y., & Wen, F. (2016). A review on piezoelectric polymer films and their applications in energy harvesting systems. Journal of Materials Science: Materials in Electronics, 27(11), 11203-11219.
3. Chen, Y., Zhang, S., & Liu, J. (2018). Recent advances in flexible piezoelectric materials for sensors and actuators. Journal of Materials Chemistry C, 6(2), 191-205.
4. Li, J. F., & Wang, L. (2016). Research progress in lead-free piezoelectric ceramics. Journal of Inorganic Materials, 31(10), 1055-1064.
5. Kim, H. J., Park, J. Y., & Ryu, J. (2016). Recent progress on flexible piezoelectric nanogenerators based on polymer nanocomposites. Nano Convergence, 3(1), 1-13.