Synthesis, Structural and Photoluminescence Properties of RE³⁺ (RE = Pr, Tm): (Mg Ca)₂Bi₄Ti₅O₂₀ Ceramics

Abstract

Pr³⁺ and Tm³⁺ (0.2 mol %) ions doped magnesium calcium bismuth titanate [(MgCa)₂ Bi₄Ti₅O₂₀] ceramics were synthesized by conventional solid state reaction method. The structural and morphological properties of prepared ceramic powders were studied by using XRD and SEM profiles. The elemental analysis and FTIR spectra of the prepared ceramics have been analyzed. Emission spectrum of Pr³⁺: (MgCa)₂Bi₄Ti₅O₂₀ ceramic powder has shown strong red emission at 614 nm (³P₀ → ³H₆) with an excitation wavelength λ_exci = 452 nm (³H₄ → ³P₂) and Tm³⁺: (MgCa)₂Bi₄Ti₅O₂₀ ceramic powder has shown blue emission at 477 nm (¹G₄ → ³H₆) with an excitation wavelength λ_exci = 367 nm (³H₆ → ¹D₂).

Keywords:

• Emission
• excitation
• XRD
• SEM
• EDAX
• FTIR

Acknowledgments

Communicated by Dr. George W. Taylor