Ramesh, R. and Jagannathan, R. (2000) Optical Properties of Ce3+ in Self-Assembled Strontium Chloro(hydroxy)apatite Nanocrystals. Journal of Physical Chemistry B, 104. pp. 8351-8360. ISSN 1520-6106

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Strontium chloroapatite nanocrystals (nc) of size in the range 10-100 nms have been prepared by an aqueous colloidal method. In this preparation, hydroxyl (OH-) ion contamination having profound dependence on the preparative conditions (in particular pH) could not be avoided. The hydroxyapatite phase (at pH ) 8) resulting from this contamination seems to exhibit some self-assemblage properties that may be electrostatic in nature. Optical data (based on UV-visible and fluorescence studies) show that the 2FJ ground state of Ce3+ as a dopant in these nanocrystalline apatites undergoes considerable modification arising from cross-relaxation between the Ce3+ ground state and hole states of the host matrix created near valence band edge.

Item Type: Article
Subjects: Electrochemical Materials Science
Depositing User: ttbdar CECRI
Date Deposited: 25 Mar 2012 16:54
Last Modified: 25 Mar 2012 16:54
URI: http://cecri.csircentral.net/id/eprint/1026

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