Perovskite (Na0.5K0.5)1-x(LiSb)xNb1-xO3 lead-free piezoceramics
Perovskite (Na0.5K0.5)1-x(LiSb)xNb1-xO3 lead-free piezoceramics
复制标题
钙钛矿(Na0.5K0.5)1-x(LiSb)xNb1-xO3无铅压电陶瓷
DOI：
10.1063/1.2206554
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发表时间：
2006-05-22
影响因子：
4
通讯作者：
Zheng, Li-Mei
中科院分区：
文献类型：
--
作者：
Zang, Guo-Zhong;Wang, Jin-Feng;Zheng, Li-Mei
采用常规固相烧结法合成了以锂和锑（Na_（0.5）K_（0.5））（1-x）（LiSb）（x）Nb_（1-x）O_3）取代的无铅钛酸钾钠压电陶瓷。围绕正交-四元多晶型相变进行成分设计，通过将锂和锑取代到钙钛矿结构中来进一步增强介电和压电性能。添加锂和锑的组合效应导致斜方晶系-四方晶系（TO-T）的下移，而没有显著降低T-C。发现介电、压电和机电性质为ε/ε（0）> 1300，d（33）> 260 pC/N，并且k（p）> 50%，同时保持低介电损耗。与多晶型TO-T转变和高T-C转变（类似于390摄氏度）相关的增强的极化率应提供宽范围的温度操作。(c)2006年，美国物理学会。
Lead-free potassium sodium niobate piezoelectric ceramics substituted with lithium and antimony (Na0.5K0.5)(1-x)(LiSb)(x)Nb1-xO3 have been synthesized by conventional solid state sintering method. Compositionally engineered around the orthorhombic-tetragonal polymorphic phase transition, the dielectric and piezoelectric properties were further enhanced with the addition of lithium and antimony substituted into the perovskite structure. The combined effects of lithium and antimony additions resulted in a downward shift in the orthorhombic-tetragonal (TO-T) without significantly reducing T-C. The dielectric, piezoelectric, and electromechanical properties were found to be epsilon/epsilon(0)> 1300, d(33)> 260 pC/N, and k(p)> 50%, while maintaining low dielectric loss. The enhanced polarizability associated with the polymorphic TO-T transition and high T-C transition (similar to 390 degrees C) should provide a wide range of temperature operation. (c) 2006 American Institute of Physics.