Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1624551 | Journal of Alloys and Compounds | 2008 | 4 Pages |
Abstract
Eu3+-doped Gd1âxYxCa4O(BO3)3 solid solutions in the form of nanopowders with mean particle size of about 50 nm were prepared by sol-gel method for x = 0.13, 0.44 and 0.60. X-ray examination revealed that compounds prepared by this method are single phase in contrast to compounds prepared by solid state reaction. Room temperature VUV-UV excitation spectra of the 5D0 emission and corresponding VUV-excited emission spectra of Eu3+ were recorded using synchrotron radiation. In addition the excitation spectra in the visible region and the 5D0 luminescence decay curves were measured. Spectroscopic features of nanopowders prepared by sol-gel method were compared with those evaluated for single crystal samples grown by the micro-pulling down technique from charge prepared by sol-gel method. It has been concluded that the sol-gel method facilitates the control of stoichiometry and structural stability of compounds under study.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
A. KÅos, L. Lipinska, P. Solarz, W. Ryba-Romanowski,