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A short-range ordering of lanthanide and calcium atoms was found in isomorphous La3+ and Ca2+ cations in stoichiometric oxides LnCaAl3O7 (Ln = La, Nd, Sm, Gd, Ho, Er). It takes place almost exclusively within the first cation coordination sphere. The cations form electrostatically linked mixed cation pairs Ln3+-Ca 2+ in the nearest neighboring points of a common structural site. No spatial ordering of the pairs themselves is observed.
Original language | English |
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Pages (from-to) | 1848-1852 |
Number of pages | 5 |
Journal | Russian Journal of General Chemistry |
Volume | 72 |
Issue number | 12 |
DOIs | |
State | Published - 2002 |
ID: 87767632