Please use this identifier to cite or link to this item: doi:10.22028/D291-24675
Title: Synthesis and temperature dependent fluorescence properties of nanoscale europium doped yttria derived in presence of tween-80 and beta-alanine
Author(s): Varadan, V. K.
Sharma, Pramod K.
Schmidt, Helmut K.
Jilavi, Mohammad H.
Language: English
Year of Publication: 2000
OPUS Source: International journal of inorganic materials. - 2. 2000, 5, S. 407-412
SWD key words: Fluoreszenz
Energiedispersive Röntgenspektroskopie
DDC notations: 620 Engineering and machine engineering
Publikation type: Journal Article
Abstract: A novel procedure for the synthesis of uniform europium doped yttria powder was developed. It was prepared by chemically growth-controlled method in the presence of surface modifier. A mixture of Tween-80 (polyoxyethylene (20) sorbitate) and β-alanine, was used as surface modifier. The obtained powder was pure and highly crystalline. The powder was also examined via Fourier transformation infra red (FTIR) spectroscopy to determine the presence of nitrate ions along with the powder at pre and post calcination. Thermal behavior of the powder was investigated by thermal gravimetric analysis (TGA) and differential thermal analysis (DTA). High Resolution Transmission Microscopy (HRTEM) reveals that the particle size is around 22 nm. Chemical microanalysis of europium doped yttria was made by energy dispersive spectrum analyzer (EDS) attached along with HRTEM and indicated a Y/Eu atomic ratio 2.1. The fluorescence spectra of calcined powder showed that the Eu3+ ions were in low symmetry bonding sites in the yttria structure.
Link to this record: urn:nbn:de:bsz:291-scidok-30003
Date of registration: 14-Oct-2010
Faculty: SE - Sonstige Einrichtungen
Department: SE - INM Leibniz-Institut für Neue Materialien
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