ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
Zinc oxide was obtained by combustion reaction synthesis method using microwavesenergy to provide ignition to the mixture of zinc nitrate, europium and urea. The influence of theeuropium concentration on the structure, morphology and luminescence characteristics of the ZnOpowders was investigated. The proportion of each reagent and fuel was calculated based on thepropellants chemistry concepts. The solutions were mixed in a vitreous silica basin and submitted ofexternal heating in a microwaves oven until self-ignition occurred. The resulting powders werecharacterized by X-ray diffractometer (XRD), granulometric distribution, scanning electronicmicroscopy (SEM) and emission spectroscopy. The XRD results showed the formation of ZnO:Eu3+as main phase and Eu2O3 as secondary phase. The powder presented morphology constituted of fineparticles agglomerates (〈100nm) and red luminescence characteristic from Eu3+ ion
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/19/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.591-593.745.pdf
