Extended X-ray absorption fine structure (EXAFS) study of CaSO4:Dy phosphors |
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| Authors: | D. Bhattacharyya A.K. Bakshi G. Aquilanti S. Pascarelli |
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| Affiliation: | a Bhabha Atomic Research Centre, Mumbai 400 085, India
b European Synchrotron Radiation Facility, BP 220, 38043 Grenoble Cedex, France |
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| Abstract: | Extended X-ray absorption fine structure (EXAFS) measurements have been carried out on CaSO4:Dy phosphors at the Dy L3 edge with synchrotron radiation. The data have been analysed to find out the Dy-S and Dy-O bond lengths in the neighborhood of the Dy atoms. Measurements have been carried out over several samples thermally annealed for different cycles at 400 °C in air for 1 h and the change in bond lengths in samples with increasing number of annealing cycles have been studied by analyzing the EXAFS data. |
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| Keywords: | 61 78 |
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