Abstract
Some cation-substituted and oxygen-rich compounds derived from the lanthanum copper oxide of composition La2CuO4 have been examined by measurement of the copper K-, lanthanum L3- and europium L3-edge extended X-ray absorption fine structure. The results obtained from La2CuO4 are in good agreement with previously reported data and are consistent with the six-fold oxygen co-ordination of copper and nine-fold coordination by oxygen of lanthanum. The results obtained from the compound Eu2CuO4 show co-ordination numbers of four and eight for copper and europium as would be expected for a structure containing copper in a square-planar oxygen environment and europium in square antiprismatic oxygen co-ordination.
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Schedule a callMore From: Journal of the Chemical Society, Faraday Transactions
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