Potassium-sodium niobate lead-free piezoelectric ceramics: recent advances and perspectives

作者：Wu, Jiagang^*; Xiao, Dingquan; Zhu, Jianguo

来源：Journal of Materials Science: Materials in Electronics , 2015, 26(12): 9297-9308.

DOI：10.1007/s10854-015-3084-2

• TETRAGONAL PHASE COEXISTENCE
• HIGH-T-C
• ELECTRICAL-PROPERTIES
• FERROELECTRIC PROPERTIES
• GIANT PIEZOELECTRICITY
• PHYSICAL-PROPERTIES
• THIN-FILMS
• BOUNDARY
• D(33)
• TRANSITION

Potassium-sodium niobate lead-free piezoceramics have received considerable attention for replacing lead-based ones in some practical applications. This review covers the fundamental aspects of potassium-sodium niobate lead-free piezoelectrics in terms of the relationships between new phase boundaries and high piezoelectric activity. The enhancement in its piezoelectric response is primarily concerned for piezoelectric devices. For a potassium-sodium niobate material, the phase boundaries modifications are important to achieve a high piezoelectric activity. In addition, the compositions concerning phase boundaries have a significant impact on the intensities of piezoelectric properties. Correct evaluation of piezoelectric properties is becoming more important in enabling an accurate comparison of a number of studies based on different systems. In the latter part, our recent advances in its piezoelectric properties are presented with a focus on potassium-sodium niobate to give an overview of the various problems and solutions.

• 出版日期2015-12
• 单位四川大学