Hydrothermal Synthesis and Characterization of LaAlO3: 0.05Eu3+ Microcrystals

doi:10.7503/cjcu20120715

Abstract

Abstract:

Uniform hexagonal microcrystals of LaAlO₃:0.05Eu³⁺ of trigonal system were synthesized by a simple hydrothermal method and the effects of temperature and the concentration of NaOH solution were investigated. The obtained samples were characterized by scanning electron microscopy(SEM), energy dispersive X-ray spectrometry(EDX), X-ray diffraction(XRD) and photoluminescence(PL) spectra. The diffraction data of LaAlO₃:0.05Eu³⁺samples were refined by the Rietveld method using GSAS program on the basis of the strutural model of LaAlO₃. The agreement factors are R_p=6.79% and R_wp=8.96%. Its lattice parameters are a=b=0.53636(2) nm and c=1.3101(1) nm. SEM image exhibits the uniform hexagonal shapes of the as-synthesized LaAlO₃:0.05Eu³⁺ microcrystals with an average diameter of about 4 μm. The PL spectrum shows that the characterization emission of LaAlO₃:0.05Eu³⁺ is attributed to the ⁵D₀→⁷F₁ magnetic dipole transition of Eu³⁺.

Key words: LaAlO₃: 0.05Eu³⁺, Hydrothermal synthesis, Luminescent property

CLC Number:

O611.4

TrendMD:

WANG Xiao-Li, YANG Zhi. Hydrothermal Synthesis and Characterization of LaAlO₃: 0.05Eu³⁺ Microcrystals[J]. Chem. J. Chinese Universities, 2013, 34(1): 36.

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Hydrothermal Synthesis and Characterization of LaAlO₃: 0.05Eu³⁺ Microcrystals

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