| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1476455 | Journal of the European Ceramic Society | 2007 | 4 Pages |
Abstract
A comparison between theoretically calculated unit cell volume and interatomic distances in the system La0.7Sr0.3Mn1−xMexO3+δ (where Me = Cu, Fe, Cr, Ti) and the experimental data obtained by the full-profile Rietveld X-ray analysis as well as an analysis of magnetic properties allowed us to suggest possible mechanisms of charge compensation occurring when d metals substitute for manganese. It has been shown that in the case when copper, iron, chromium and titanium ions substitute for manganese ions in the system La0.7Sr0.3Mn1−xMexO3 charge compensation is described by the model 2Mn3+ → Mn4+ + Cu2+, Mn3+ → Fe3+, Mn3+ → Cr3+ and Mn4+ → Ti4+, respectively. In the latter case, a decrease in oxygen nonstoichiometry occurs with increasing x.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
O.I. V’yunov, A.G. Belous, A.I. Tovstolytkin, O.Z. Yanchevskii,