Alemi, A. and Karimpour, E. and Shokri, H. (2008) Preparation, characterization and luminescent properties of europium oxide doped nano LaMn0 center dot 9Zn0 center dot 1O3+d by sol-gel processing. BULLETIN OF MATERIALS SCIENCE , 31 (7). pp. 967-973. ISSN 0250-4707
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New compounds of rare earth complex oxides with perovskite structure in a combination of La with Eu ions and Mn with Zn ions, La1-x Eu (x) Mn0 center dot 9Zn0 center dot 1O3+d (LEMZ) (0 center dot 0 a parts per thousand currency sign x a parts per thousand currency sign 0 center dot 32) in A and B sites, respectively were synthesized. X-ray powder diffraction (XRD), fourier transform infrared spectroscopy (FT-IR) and photoluminescence spectra (PL) were used to characterize the resulting nanoparticles. The powder X-ray diffraction peaks could be indexed as a rhombohedral cell. The results of FT-IR spectra were in agreement with those of XRD. High-quality nanopowders with controlled stoichiometry and microstructure were prepared at a temperature range of 700-800A degrees C for 6 h, with mean particle sizes of similar to 17 center dot 5 nm. Photoluminescence measurements showed Eu3+ ions characteristic red emission in crystalline LEMZ powders due to the (5) D (0) -> (7) F (J) (J = 0-6) transitions of the 4f electrons of Eu3+ ions. The structure, homogeneity and particle size of the obtained compounds during different stages were investigated by scanning electron microscopy (SEM).
|Subjects:||Physical Science > Nanophysics|
Physical Science > Nano objects
Material Science > Nanochemistry
Material Science > Nanostructured materials
|Divisions:||Faculty of Engineering, Science and Mathematics > School of Physics|
Faculty of Engineering, Science and Mathematics > School of Chemistry
|Deposited On:||04 Nov 2009 07:48|
|Last Modified:||04 Nov 2009 07:48|
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