Defect dipole induced large recoverable strain and high energy-storage density in lead-free Na0.5Bi0.5TiO3-based systems

• Published in: Applied physics letters Vol. 108; no. 20
• Main Authors: Cao, Wenping, Li, Weili, Feng, Yu, Bai, Terigele, Qiao, Yulong, Hou, Yafei, Zhang, Tiandong, Yu, Yang, Fei, Weidong
• Format: Journal Article
• Language: English
• Published: Melville American Institute of Physics 16.05.2016
• Subjects: Applied physics; Bismuth titanate; Defects; Dipoles; Electrostriction; Energy storage; Ferroelectric materials; Ferroelectricity; Flux density; Hysteresis loops; Lead free; Polarization; Positioning devices (machinery); Recoverable strain; Relaxors; System effectiveness

In this letter, we propose an effective route to obtain large recoverable strain, purely electrostrictive effects and high energy-storage density by inducing defect dipoles into Na0.5Bi0.5TiO3 (NBT)-based relaxor ferroelectrics. It has been found that pinched and double polarization hysteresis loops...