An effective method to detect the Curie transition of Er3+/  Yb3+ co-doped BaTiO3 ceramics by up-conversion photoluminescence intensity ratio. (31st May 2016)

• Record Type: Journal Article
• Authors: Zuo, Qianghui; Luo, Laihui; Li, Weiping; Wang, Feifei
• Is Part Of: Journal of physics. Volume 49:Number 26(2016)
• Publication Date: 2016-05-31
• Subjects: ferroelectric -- ceramics -- upconversion -- photoluminescence -- Curie transition; Physics -- Periodicals; 530
• DOI: 10.1088/0022-3727/49/26/265303
• Languages: English
• ISSNs: 0022-3727

Abstract

Abstract: In this work, BaTi1− x − y O3 : x Er/ y Yb (BTO: x Er/ y Yb, x = 0, y = 0; x = 0.005, y = 0.005; x = 0.01, y = 0.005; x = 0.01, y = 0.01; x = 0.015, y = 0.01) ceramics were prepared using a conventional solid-reaction method to investigate the relation between the Curie transition and up-conversion photoluminescence (UC PL) properties. We did not find that the green or red UC PL absolute intensity of Er 3+ ions had any direct correlation with the Curie phase transition. However, the variation of the ratio I g / I r of green and red UC emission intensities with temperature has similar behavior as that of dielectric constant. An evident peak of I g / I r ratio was also obtained at T C in all the BTO: x Er/ y Yb ceramics with different Er 3+ /Yb 3+ co-doping contents. The present study demonstrates that UC PL intensity ratio, rather than the absolute PL intensity, is an effective optical non-contact method to detect the Curie phase transition of ferroelectrics.