材料科学
四方晶系
相变
铁电性
凝聚态物理
压电
电场
相(物质)
单晶
Crystal(编程语言)
拉伤
电介质
晶体结构
结晶学
复合材料
光电子学
化学
物理
医学
内科学
有机化学
量子力学
计算机科学
程序设计语言
作者
Chao Chen,Xiangyong Zhao,Yaojin Wang,Haiwu Zhang,Hao Deng,Xiaobing Li,Xingan Jiang,Xiangping Jiang,Haosu Luo
摘要
A lead-free single crystal 0.92(Na0.5Bi0.5)TiO3-0.06BaTiO3-0.02(K0.5Na0.5)NbO3 (NBT-6BT-2KNN) with dimension of Φ35 mm × 10 mm is grown by a precisely controlled top seeded solution growth method. The 〈001〉 oriented single crystals have excellent piezoelectric properties with a giant strain of 0.83% at 28 kV/cm. Application of an electric-field ≥14 kV/cm leads to a phase transition from pseudocubic to coexistence of tetragonal and pseudocubic. A strong ferroelectric domain texture occurs during the phase transition. Furthermore, the variation of tetragonal phase fraction agrees well with the macroscopic strain curve, demonstrating that the induced tetragonal phase plays a critical role in the high strain property.
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