9-13 July 2012
Africa/Johannesburg timezone
<a href="http://events.saip.org.za/internalPage.py?pageId=11&confId=14"><font color=#ff0000>SAIP2012 PROCEEDINGS AVAILABLE</font></a>

Thermoluminescent properties of Ba<sub>1-x</sub>Mg<sub>x</sub>Al<sub>2</sub>O<sub>4</sub>:Eu<sup>2+</sup>,Dy<sup>3+</sup> prepared by combustion method

12 Jul 2012, 11:20
Oral Presentation Track A - Division for Condensed Matter Physics and Materials DCMPM1


Dr Bakang Moses Mothudi (University of South Africa)

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Abstract content <br> &nbsp; (Max 300 words)

Ba1-xMgxAl2O4:Eu2+,Dy3+ phosphors prepared by combustion method at an initiating combustion temperature of 600 °C. The X-ray diffraction patterns of different compositions of the as-prepared were observed and the intensity of the peaks improved significantly after annealing the samples in air for 3 hours at 1000 °C. The SEM images of the samples with compositions x = 0.0 and 1.0 show the spherical nanoparticles of almost pure BaAl2O4 and MgAl2O4 respectively. The broad emission spectra shown by most of the samples can be attributed to the typical 4f65d1 -4f7 transition of the Eu2+ ions. The variable peak positions shown in most of the phosphors can be attributed to different composition of Mg (x= 0.0 - 1.0).

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Primary author

Dr Bakang Moses Mothudi (University of South Africa)


Prof. H C Swart (University of the Free State) Prof. Martin Ntwaeaborwa (University of the Free State) Dr Simon Dhlamini (University of South Africa)

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