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Degree of order and redox balance in B-site ordered double-perovskite oxides, Sr2 MMoO6− δ (M=Mg, Mn, Fe, Co, Ni, Zn)
- Source :
-
Journal of Solid State Chemistry . May2010, Vol. 183 Issue 5, p1007-1012. 6p. - Publication Year :
- 2010
-
Abstract
- Abstract: We have investigated a series of double-perovskite oxides Sr2 MMoO6− δ (M=Mg, Mn, Fe, Co, Ni, Zn) for redox stability, oxygen content and crystal structure. Phases with M=Co, Ni and Zn were found to be oxygen-stoichiometric and stable under oxidizing conditions, whereas those with M=Mn and Fe were oxygen-deficient and stable under reducing conditions. The M=Mg phase is stable both under reducing and oxidizing conditions, showing variable oxygen contents within 0.00≤δ≤0.04 depending on the annealing conditions. Structural data indicate somewhat depressed values for the degree of M/Mo cation order and also evidence of electron transfer from M II to MoVI for M=Mn, Fe and Co. [Copyright &y& Elsevier]
Details
- Language :
- English
- ISSN :
- 00224596
- Volume :
- 183
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Journal of Solid State Chemistry
- Publication Type :
- Academic Journal
- Accession number :
- 50395487
- Full Text :
- https://doi.org/10.1016/j.jssc.2010.03.004