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ARTICLE

Photoluminescence properties of Ba_0.7Sr_0.3TiO₃:Sm³⁺ modified K_0.5Na_0.5NbO₃ perovskite oxide ceramics

K. W. Sun^a, Z. Liu^b,*, R. X. Wang^b, X. C. Ling^a, J. W. Sun^a

a College of International Education, Jinling Institute of Technology, Nanjing 211168, China
b School of Science, Jinling Institute of Technology, Nanjing 211168, China

* Corresponding Author:

Chalcogenide Letters 2023, 20(8), 563-571. https://doi.org/10.15251/CL.2023.208.563

Received 16 May 2023; Accepted 04 August 2023;

Abstract

Ba_0.7Sr_0.3TiO₃:Sm³⁺ modified K_xNa(_1-x)NbO₃ ceramics with perovskite-type structure were synthesized via solid state sintering method. Sm³⁺ ions doping was designed for substituting both A and B sites in the ABO3 structure, Sm³⁺ doped Ba_0.7Sr_0.3TiO₃ (Ba_0.7Sr_0.3TiO₃:Sm³⁺ ) oxide precursor powders with the chemical formula of Ba_0.7Sr_0.3xSm_x(Ti_1-xSm_x)O₃ (x=0.005, 0.015, 0.025) were synthesized. Combined Ba_0.7Sr_0.3TiO₃:Sm³⁺ with K_0.5Na_0.5NbO₃, the perovskite-type solid solution composite ceramics were fabricated via solid phase sintering method. X-Ray diffraction was used for investigating the phase structure of the precursor powders and luminescent composite ceramics. The photoluminescence properties of the Sm³⁺ ions in the Ba_0.7Sr_0.3TiO₃-K_0.5Na_0.5NbO₃ composite ceramic materials were systematically investigated by exploring the effects of composition of the composites, excitation wavelength and temperature on photoluminescence.

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Keywords

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