Результаты исследований: Научные публикации в периодических изданиях › статья › Рецензирование
The heterovalent isomorphism of Ln3+ and Ca2+ cations in stoichiometric LnCaAlO4 oxides was studied. The X-ray diffractometry of the intensity of Laue background modulations revealed a positive short-range ordering in Ln3+ and Ca2+ distribution over points of one structural site common for both ions, which results in formation of stable Ln3+-Ca2+ couples in adjacent nine-coordinate oxygen polyhedra. The degree of ordering and the interchange energy estimated in the quasichemical approximation depend both on the effective cationic charges and on the number of unpaired f electrons of the lanthanide atom.
Язык оригинала | английский |
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Страницы (с-по) | 845-852 |
Число страниц | 8 |
Журнал | Russian Journal of General Chemistry |
Том | 71 |
Номер выпуска | 6 |
DOI | |
Состояние | Опубликовано - 2001 |
ID: 87767946