Large electrostrictive effect and high optical temperature sensing in Bi0.5Na0.5TiO3-BaTiO3-(Sr0.7Bi0.18Er0.02)TiO3 luminescent ferroelectrics. Issue 5 (1st April 2018)

• Record Type: Journal Article
• Authors: Pan, Haoli; Zhang, Jingji; Jia, Xuanrui; Xing, Hongjie; He, Junyu; Wang, Jiangying; Wen, Fei
• Is Part Of: Ceramics international. Volume 44:Issue 5(2018)
• Page Start: 5785
• Page End: 5789
• Publication Date: 2018-04-01
• Subjects: Ferroelectric ceramics -- Lead-free -- Diffuse phase transition -- Electrostriction -- Luminescence; Ceramics -- Periodicals; Céramique industrielle -- Périodiques; Ceramics; Periodicals; Electronic journals; 666
• DOI: 10.1016/j.ceramint.2017.12.067
• Languages: English
• ISSNs: 0272-8842

Abstract

Abstract: (0.94- x )Bi0.5 Na0.5 TiO3 -0.06BaTiO3 - x (Sr0.7 Bi0.18 Er0.02 )TiO3 (BNT-BT- x SBET) luminescent ferroelectric ceramics were designed. Dielectric measurements revealed that two dielectric anomalies were suppressed and shifted to a lower temperature with increasing the SBET concentration. As a result, a nearly hysteresis-free strain of ~ 0.11% with an electrostrictive coefficient Q 33 of 0.029 m 4 /C 2 was obtained for the composition with x = 0.30, which exhibited a thermal stability and fatigue-resistance. Meanwhile, two thermally coupled green up-conversion luminescence were observed, in which the maximum sensitivity was found to be 0.0032 K −1 at 434 K. This indicates that the system is very promising for multifunctional applications in electromechanical and temperature sensing device.