Effects of Dy Substitution for Bi on Phase, Microstructure and Dielectric Properties of Layer-structured Bi4-xDyxTi3O12Ceramics

Thongmee, Navavan; Watcharapasorn, Anucha; Jiansirisomboon, Sukanda

doi:10.1080/00150193.2013.850001

Cited by 4 publications

(2 citation statements)

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“…This is consistent with a previous report. 19 As for the BLSFs compounds, it has been confirmed that the bismuth oxide layer is very stable, and that the Bi 3+ cations in (Bi 2 O 2 ) 2+ are difficult to be substituted in a lower concentration of other rare earth ions. 15 Osada et al 20 content is lower than 1.0.…”

Section: Methodsmentioning

confidence: 90%

Structure, Ferroelectric and Photoluminescence Properties of Eu-Doped CaBi4Ti4O15 Multifunctional Ceramics

Xiao

Guo

et al. 2015

Journal of Elec Materi

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Lead-free multifunctional ceramics of CaBi 4Àx Eu x Ti 4 O 15 were prepared by a traditional solid state method, and the effects of Eu doping on structure, ferroelectric, piezoelectric and photoluminescence properties of the ceramics were investigated. All the ceramics possessed typical bismuth layer structure with m = 4, belonging to orthorhombic symmetry, and no secondary phase was detected. The plate-like grains were observed in all the ceramics, and the grain growth was slightly inhibited after the addition of Eu. Saturated polarization hysteresis loops were observed for all the ceramics, and the remanent polarization P r decreased with Eu doping. The Eu-doped ceramics had a sharp excitation band centered at 465 nm due to the f-f transition from the 7 F 0 ground state to the 5 D 2 excited state of Eu 3+ . Under the excitation by 465 nm light, the main emission peaks located at 595 nm and 616 nm were obtained, which corresponds to the transition of 5 D 0 -7 F 1 , 5D 0 -7 F 2 levels in Eu 3+ , respectively. Our study shows that CaBi 4 Ti 4 O 15 ceramics may be a promising multifunctional material for potential applications in optical-electro integration devices.

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Section: Methodsmentioning

confidence: 90%

Structure, Ferroelectric and Photoluminescence Properties of Eu-Doped CaBi4Ti4O15 Multifunctional Ceramics

Xiao

Guo

et al. 2015

Journal of Elec Materi

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show abstract

“…It is widely accepted that the Bi 2 O 2 layers have a significant influence on the polar and electrical conductivity properties of bismuth based layered structures. There has been a lot of research conducted to enhance their properties by the substitution of the Bi 3 þ ions of rare earth cations [9][10][11][12][13][14]. The effect of CeO 2 on various ceramics has been extensively studied because of their high endurance under DC field stress, grain growth inhibition, and the effective Curie temperature shift.…”

Section: Introductionmentioning

confidence: 99%