Fatigue properties and impedance analysis of potassium sodium niobate–strontium titanate transparent ceramics
Fatigue properties and impedance analysis of potassium sodium niobate–strontium titanate transparent ceramics
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DOI：
10.1007/s00339-016-0437-5
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发表时间：
2016-09
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影响因子：
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通讯作者：
Zhiyong Liu;H. Fan;Shenhui Lei;Ju Wang;Hailin Tian
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文献类型：
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作者：
Zhiyong Liu;H. Fan;Shenhui Lei;Ju Wang;Hailin Tian
采用无压固相烧结法制备了0.9K0.5Na0.5NbO3- 0.1SrTiO3基高透明铁电陶瓷。该透明陶瓷具有独立的双极开关周期机电响应（S33在107个周期内仅退化3.2%），表明其在电场下具有极其稳定的性能。从阻抗谱和X射线光电子能谱分析，得出的结论是，这种光学透明性和耐疲劳行为主要归因于较低的氧空位密度的陶瓷。
Highly transparent ferroelectric ceramics based on 0.9K0.5Na0.5NbO3–0.1SrTiO3were prepared using a pressure-less solid-state sintering method without using hot isostatic pressing and spark plasma sintering. An independence electromechanical response of bipolar switching cycles (S33only degraded 3.2 % up to 107cycles) was presented in this transparent ceramics, which indicated an extremely stable property under electric field. From impedance spectroscopy and X-ray photoelectron spectroscopy analyses, it was concluded that such optical transparency and fatigue-resistant behaviors were mainly attributed to the lower density of oxygen vacancies in the ceramics.