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Method for improving piezoelectric response of sodium bismuth titanate ceramics
The invention belongs to the field of functional material application, and relates to a method for improving piezoelectric response of sodium bismuth titanate ceramics. According to the invention, extra atoms are added into a lattice in a non-stoichiometric manner in the sodium bismuth titanate ceramic with a perovskite type (ABO3) structure, so that the disorder degree during atom arrangement is increased, the heterogeneity of polarization intensity (size and direction) between polar nano micro-regions in the structure is improved, the energy barrier of polarization intensity steering in the system is reduced, and the performance of the system is improved. Therefore, the purpose of improving the piezoelectric response of the sodium bismuth titanate ceramic is achieved.
本发明属于功能材料应用领域，涉及一种提高钛酸铋钠系陶瓷压电响应的方法。本发明通过在具有钙钛矿型(ABO3)结构的钛酸铋钠系陶瓷中，采用非化学计量方式添加额外的原子进入晶格，增大原子排列时的混乱程度，提升结构中极性钠米微区之间极化强度(大小和方向)的异质性，降低系统中极化强度转向的能垒，从而达到提升钛酸铋钠系陶瓷压电响应的目的。
Method for improving piezoelectric response of sodium bismuth titanate ceramics
The invention belongs to the field of functional material application, and relates to a method for improving piezoelectric response of sodium bismuth titanate ceramics. According to the invention, extra atoms are added into a lattice in a non-stoichiometric manner in the sodium bismuth titanate ceramic with a perovskite type (ABO3) structure, so that the disorder degree during atom arrangement is increased, the heterogeneity of polarization intensity (size and direction) between polar nano micro-regions in the structure is improved, the energy barrier of polarization intensity steering in the system is reduced, and the performance of the system is improved. Therefore, the purpose of improving the piezoelectric response of the sodium bismuth titanate ceramic is achieved.
本发明属于功能材料应用领域，涉及一种提高钛酸铋钠系陶瓷压电响应的方法。本发明通过在具有钙钛矿型(ABO3)结构的钛酸铋钠系陶瓷中，采用非化学计量方式添加额外的原子进入晶格，增大原子排列时的混乱程度，提升结构中极性钠米微区之间极化强度(大小和方向)的异质性，降低系统中极化强度转向的能垒，从而达到提升钛酸铋钠系陶瓷压电响应的目的。
Method for improving piezoelectric response of sodium bismuth titanate ceramics
一种提高钛酸铋钠系陶瓷压电响应的方法
CHEN PAN (Autor:in) / CHEN LEILEI (Autor:in) / ZHANG XIN (Autor:in) / GAO YUNFEI (Autor:in) / YUAN BIN (Autor:in)
11.06.2024
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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