On the substitution site of Cr and Fe in LiNbO3: An EXAFS study

Corradi, G. and Chadwick, A.V. and West, A.R. and Cruickshank, K. and Paul, M. (1995) On the substitution site of Cr and Fe in LiNbO3: An EXAFS study. In: 7th Europhysical Conference on Defects in Insulating Materials (Eurodim 94), Lyon, France. (The full text of this publication is not available from this repository)

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Abstract

K-edge EXAFS spectra of 5 molar% Cr or Fe have been observed in LiNbO3 and also in Mg co-doped samples. The results in congruent LiNbO3 can be interpreted in terms of a relaxed Li substitution model, however, in the case of Cr, the formation of pairs occupying Li and Nb sites seems also to be important. In stoichiometric or Mg-containing samples Fe is partly displaced to the Nb site while for Cr the dominating process seems to be the formation of aggregates with the participation of Mg.

Item Type: Conference or workshop item (Other)
Uncontrolled keywords: crystal defects; impurity centres; transition elements; lithium niobate; EXAFS
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK9001 Nuclear engineering
Divisions: Faculties > Science Technology and Medical Studies > School of Engineering and Digital Arts
Depositing User: P. Ogbuji
Date Deposited: 04 Jun 2009 13:35
Last Modified: 08 May 2012 13:05
Resource URI: http://kar.kent.ac.uk/id/eprint/19774 (The current URI for this page, for reference purposes)
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