Research output: Contribution to journal › Article › peer-review
Cation distribution and interatomic interactions in oxides with heterovalent isomorphism : II.1 complex aluminates Ln2SrAl2O7 (Ln = La, Nd, Gd). / Zvereva, I. A.; Smirnov, E. Yu; Vagapov, D. A.; Choisnet, J.
In: Russian Journal of General Chemistry, Vol. 70, No. 12, 2000, p. 1841-1846.Research output: Contribution to journal › Article › peer-review
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TY - JOUR
T1 - Cation distribution and interatomic interactions in oxides with heterovalent isomorphism
T2 - II.1 complex aluminates Ln2SrAl2O7 (Ln = La, Nd, Gd)
AU - Zvereva, I. A.
AU - Smirnov, E. Yu
AU - Vagapov, D. A.
AU - Choisnet, J.
PY - 2000
Y1 - 2000
N2 - The distribution of rare-earth and strontium cations over two sites in perovskite-like layered aluminates Ln2SrAl2O7, crystallized in the Sr3Ti2O7 structural type, was studied by the full-profile X-ray diffraction analysis. The probability of population of oxygen cubooctahedra (Ln,Sr)O12 with Sr2+ cations and of nine-vertex polyhedra (Ln,Sr)O9 with Ln3+ cations was found to increase in the La, Nd, Gd series. This was demonstrated both by direct calculations of the population and by analysis of interatomic interactions within and between layers of the perovskite cells. Cation-oxygen bonds between the layers was shown to strengthen in the above series, which results in stabilization of the layered structure as a whole.
AB - The distribution of rare-earth and strontium cations over two sites in perovskite-like layered aluminates Ln2SrAl2O7, crystallized in the Sr3Ti2O7 structural type, was studied by the full-profile X-ray diffraction analysis. The probability of population of oxygen cubooctahedra (Ln,Sr)O12 with Sr2+ cations and of nine-vertex polyhedra (Ln,Sr)O9 with Ln3+ cations was found to increase in the La, Nd, Gd series. This was demonstrated both by direct calculations of the population and by analysis of interatomic interactions within and between layers of the perovskite cells. Cation-oxygen bonds between the layers was shown to strengthen in the above series, which results in stabilization of the layered structure as a whole.
UR - http://www.scopus.com/inward/record.url?scp=27844482608&partnerID=8YFLogxK
M3 - Article
AN - SCOPUS:27844482608
VL - 70
SP - 1841
EP - 1846
JO - Russian Journal of General Chemistry
JF - Russian Journal of General Chemistry
SN - 1070-3632
IS - 12
ER -
ID: 87768520