A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Electrostrictive strain enhancement method for sodium bismuth titanate-based relaxor ferroelectric
The invention relates to the technical field of materials, and discloses an electrostrictive strain enhancement method for a sodium bismuth titanate-based relaxor ferroelectric. According to the invention, pre-polarization operation of an alternating electric field is carried out on the sodium bismuth titanate-based relaxor ferroelectric ceramic which is synthesized by a traditional solid phase method and is located near a critical position, and an original large-size non-traversal polarity region is induced in a traversal sodium bismuth titanate-based relaxor, so that a nucleation barrier in a field-induced strain process is reduced; and the electrostrictive strain effect is obviously enhanced. After simple treatment, the electrostrictive strain of the sodium bismuth titanate-based relaxor ferroelectric ceramic under excitation of a 60 kV/cm electric field is obviously improved compared with that in an initial state, and the sodium bismuth titanate-based relaxor ferroelectric ceramic has more excellent performance than common sodium bismuth titanate-based relaxor ferroelectric ceramic.
本发明涉及材料技术领域，公开了用于钛酸铋钠基弛豫铁电体的电致应变增强方法。本发明通过对传统固相法合成的位于临界位置附近的钛酸铋钠基弛豫铁电陶瓷进行交流电场的预极化操作，在遍历的钛酸铋钠基弛豫体中引诱出原生性的大尺寸的非遍历极性区域，降低场致应变过程中的成核势垒，显著增强电致应变效应。本发明的钛酸铋钠基弛豫铁电陶瓷通过简单处理后在60 kV/cm电场激励下的电致应变相比于初始状态存在明显的提升，具有比普通钛酸铋钠基弛豫铁电陶瓷更为优异的性能。
Electrostrictive strain enhancement method for sodium bismuth titanate-based relaxor ferroelectric
The invention relates to the technical field of materials, and discloses an electrostrictive strain enhancement method for a sodium bismuth titanate-based relaxor ferroelectric. According to the invention, pre-polarization operation of an alternating electric field is carried out on the sodium bismuth titanate-based relaxor ferroelectric ceramic which is synthesized by a traditional solid phase method and is located near a critical position, and an original large-size non-traversal polarity region is induced in a traversal sodium bismuth titanate-based relaxor, so that a nucleation barrier in a field-induced strain process is reduced; and the electrostrictive strain effect is obviously enhanced. After simple treatment, the electrostrictive strain of the sodium bismuth titanate-based relaxor ferroelectric ceramic under excitation of a 60 kV/cm electric field is obviously improved compared with that in an initial state, and the sodium bismuth titanate-based relaxor ferroelectric ceramic has more excellent performance than common sodium bismuth titanate-based relaxor ferroelectric ceramic.
本发明涉及材料技术领域，公开了用于钛酸铋钠基弛豫铁电体的电致应变增强方法。本发明通过对传统固相法合成的位于临界位置附近的钛酸铋钠基弛豫铁电陶瓷进行交流电场的预极化操作，在遍历的钛酸铋钠基弛豫体中引诱出原生性的大尺寸的非遍历极性区域，降低场致应变过程中的成核势垒，显著增强电致应变效应。本发明的钛酸铋钠基弛豫铁电陶瓷通过简单处理后在60 kV/cm电场激励下的电致应变相比于初始状态存在明显的提升，具有比普通钛酸铋钠基弛豫铁电陶瓷更为优异的性能。
Electrostrictive strain enhancement method for sodium bismuth titanate-based relaxor ferroelectric
用于钛酸铋钠基弛豫铁电体的电致应变增强方法
WU JIAGANG (author) / WU XIAOJUN (author) / YIN JIE (author) / WEN LANJI (author) / WU CHAO (author)
2023-06-23
Patent
Electronic Resource
Chinese
Relaxor-ferroelectric transitions: Sodium bismuth titanate derivatives
| British Library Online Contents | 2018
| European Patent Office | 2024