Structural stability and electro-elastic property of YCOB crystal annealed in harsh environment
Structural stability and electro-elastic property of YCOB crystal annealed in harsh environment
复制标题
恶劣环境退火YCOB晶体的结构稳定性和电弹性性能
DOI：
10.1063/1.5042284
复制
发表时间：
2018-09
影响因子：
4
通讯作者：
Xian Zhao
中科院分区：
文献类型：
--
作者：
Shiwei Tian;Lili Li;Fapeng Yu;Yanlu Li;Feifei Chen;Xiulan Duan;Xiufeng Cheng;Zhengping Wang;Shujun Zhang;Xian Zhao
在过去几年里，YCa₄O(BO₃)₃（YCOB，钇钙氧硼酸盐）压电晶体在高温传感器应用方面得到了积极研究。本文研究了在恶劣环境中退火处理后的YCOB晶体的结构稳定性和电弹性能。
The YCa4O(BO3)3 (YCOB) piezoelectric crystal has been actively studied for high temperature sensor applications in the last few years. In this paper, the structure stability and electro-elastic properties of the YCOB crystal annealed in a harsh environment (high temperatures of 600–1100 °C and a low atmospheric pressure of 2 × 10−5 atm for 24 h) were studied. The chemical bonding energy of the annealed YCOB crystal was studied, with variations being less than 0.2 eV, showing the high stability of the electronic structure in the YCOB crystal. The energies of vacancy formation (EVF) for Y, Ca, O, and B atoms were analyzed via first principles calculation. The O atoms were found to possess the lowest EVF value, being easier to escape (annealing in critical conditions) and compensate (thermal treatment at elevated temperatures in air) when compared to other atoms, thus leading to oxygen vacancy defects and a decrease in the chemical bonding strength after the annealing process. This is deemed to be the main factor dominating the electro-elastic property changes and their recovery behaviours.The YCa4O(BO3)3 (YCOB) piezoelectric crystal has been actively studied for high temperature sensor applications in the last few years. In this paper, the structure stability and electro-elastic properties of the YCOB crystal annealed in a harsh environment (high temperatures of 600–1100 °C and a low atmospheric pressure of 2 × 10−5 atm for 24 h) were studied. The chemical bonding energy of the annealed YCOB crystal was studied, with variations being less than 0.2 eV, showing the high stability of the electronic structure in the YCOB crystal. The energies of vacancy formation (EVF) for Y, Ca, O, and B atoms were analyzed via first principles calculation. The O atoms were found to possess the lowest EVF value, being easier to escape (annealing in critical conditions) and compensate (thermal treatment at elevated temperatures in air) when compared to other atoms, thus leading to oxygen vacancy defects and a decrease in the chemical bonding strength after the annealing process. This is deemed to be the main f...
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DOI：
10.1002/pssa.201330191
发表时间：
2014-03
期刊：
physica status solidi (a)
影响因子：
--
作者：
F. Yu;Shuai Hou;Shujun Zhang;Q. Lu;Xian Zhao
通讯作者：
F. Yu;Shuai Hou;Shujun Zhang;Q. Lu;Xian Zhao
影响因子：
3.4
作者：
TURNER, RC;FUIERER, PA;SHROUT, TR
通讯作者：
SHROUT, TR
影响因子：
3.7
作者：
Kresse, G;Furthmuller, J
通讯作者：
Furthmuller, J
影响因子：
3.7
作者：
A. Riefer;M. Friedrich;S. Sanna;U. Gerstmann;A. Schindlmayr;W. Schmidt
通讯作者：
A. Riefer;M. Friedrich;S. Sanna;U. Gerstmann;A. Schindlmayr;W. Schmidt
影响因子：
4
作者：
Fritze, H;Tuller, HL
通讯作者：
Tuller, HL