Di Chen, Azatuhi Ayrikyan, Xiang-Cheng Chu, Marc Kamlah, Kyle G Webber
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引用次数: 0
摘要
摘要研究了多晶0.91(Na 1/2 Bi 1/2) tio3 -0.06 batio3 -0.03K 0.5 Na 0.5 nbo3在恒电场作用下的蠕变行为。它揭示了极化和应变响应中有趣的随时间变化，这可以归因于从弛豫态到远程铁电态的转变。同时，获得了体体积电阻率值，消除了漏电流对极化评价的影响。研究结果为无铅弛豫铁电体的蠕变行为提供了有价值的见解，为提高压电致动器的性能和可靠性奠定了坚实的基础。
Creep in 0.91(Na1/2Bi1/2)TiO3-0.06BaTiO3-0.03K0.5Na0.5NbO3 lead-free piezoceramic under constant electric field loads
Abstract This work explores the creep behavior of polycrystalline 0.91(Na 1/2 Bi 1/2 )TiO 3 -0.06BaTiO 3 -0.03K 0.5 Na 0.5 NbO 3 under constant electric fields. It reveals intriguing time-dependent variations in both polarization and strain response, which can be attributed to a transformation from the relaxor state to a long-range ferroelectric order. Meanwhile, bulk volume resistivity values are obtained to eliminate the influence of leakage current on the polarization assessment. The findings provide valuable insights into the creep behavior of lead-free relaxor ferroelectrics, laying a solid foundation for enhancing the performance and reliability of piezoactuators.
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