Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10640193 | Materials Science and Engineering: B | 2005 | 7 Pages |
Abstract
Our experiments on the preparation of the composites of CMR manganites and metal silver have shown that in the case of La1âxMnO3+δ the vacancies in the A-sublattice of the perovskite structure can be filled by Ag+ ions under the soft conditions of the synthesis. Neutron diffraction refinement of La0.8Ag0.2MnO3.00 clearly proves the silver doping in the A-sublattice. Depending on P(O2)-T synthesis conditions the solid solutions with the broad stoichiometry range La1âxAgyMnO3+δ (0.3 â¥Â x â¥Â y) were prepared. We report here the evolution of the oxygen stoichiometry, the crystal structure as well as electro-physical properties in the series of the solid solutions. Curie temperature comes over a maximum exceeding the room temperature with the increase of silver content. La1âxAgyMnO3+δ solid solutions can be useful for the construction of the room temperature magnetic field sensors based on the magnetoresistance effect.
Related Topics
Physical Sciences and Engineering
Materials Science
Electronic, Optical and Magnetic Materials
Authors
O.Yu. Gorbenko, O.V. Melnikov, A.R. Kaul, A.M. Balagurov, S.N. Bushmeleva, L.I. Koroleva, R.V. Demin,