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.
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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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