Enhanced piezoelectricity, bright up-conversion and down-conversion photoluminescence in Er3+ doped 0.94(BiNa)0.5TiO3–0.06BaTiO3 multifunctional ceramics. (February 2016)

• Record Type: Journal Article
• Authors: Liu, Mengli; Lei, Fengying; Jiang, Na; Zheng, Qiaoji; Lin, Dunmin
• Is Part Of: Materials research bulletin. Volume 74(2016)
• Page Start: 62
• Page End: 69
• Publication Date: 2016-02
• Subjects: A. Ceramics -- B. Luminescence -- B. Piezoelectricity -- D. Ferroelectricity -- D. Dielectric properties -- D. Crystal structure; Materials -- Periodicals; Crystal growth -- Periodicals; Matériaux -- Périodiques; Cristaux -- Croissance -- Périodiques; Crystal growth; Materials; Periodicals; 620.11
• DOI: 10.1016/j.materresbull.2015.10.008
• Languages: English
• ISSNs: 0025-5408

Abstract

Graphical abstract: Highlights: The piezoelectricity of Er 3+ doped BNT-BT ceramic has been enhanced. The Er 3+ doped BNT-BT ceramic possesses excellent up/down-conversion fluorescence. At low concentration of Er 3+, Er 3+ doped BNT-BT ceramic exhibits simultaneously the strong piezoelectric, ferroelectric and fluorescent properties. Abstract: Multifunctional ceramics of 0.94(Bi1− x Er x Na)0.5 TiO3 –0.06BaTiO3 have been fabricated by an ordinary sintering technique, and their structure, piezoelectricity, ferroelectricity and photoluminescence have been studied. The rhombohedral and tetragonal phases co-exist in the ceramics with x = 0–0.036 and the concentration of Er 3+ has no obvious influence on the crystal structure. The partial substitution of Er 3+ for Bi 3+ improves the piezoelectricity of the ceramic. The ceramics with x = 0–0.02 possess strong ferroelectricity ( P r = 26.7–29.6 μC/cm 2 ) and good piezoelectric properties ( d 33 = 146–181 pC/N, k p = 21.2–34.1%, respectively). After the addition of Er 3+, the ceramics exhibit the characteristic up/down-conversion emission of Er 3+ ions. The ceramic with x = 0.032 possesses the strongest emissions at approximately 535 nm and 549 nm, which are attributed to 2 H11/2 → 4 I15/2 and 4 S3/2 → 4 I15/2 transitions, respectively. The ceramics with low Er2 O3 levels exhibit simultaneously strong piezoelectricity, ferroelectricity and photoluminescence and thus may have a potential application in multifunctional devices.