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Preparation, characterization and luminescent properties of europium oxide doped nano LaMn0 center dot 9Zn0 center dot 1O3+d by sol-gel processing

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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Official URL: http://www.springerlink.com/content/f7uv3502m55243...

Abstract

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).

Item Type:Article
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
ID Code:7348
Deposited By:JNCASR
Deposited On:04 Nov 2009 07:48
Last Modified:04 Nov 2009 07:48

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