Abstract
The transport properties and structure of the solid solutions formed in the (100 - x) La0.8Sr0.2MnO3 (LSM)-x La0.95Ni0.6Fe0.4O3 (LNF) system were studied for the first time. The parent LSM and LNF perovskites and the solid solutions formed in the concentration ranges x < 30 and 70 ≤ x ≤ 100 exhibited a rhombohedral structure. The unit cell volume of these solid solutions decreases with increasing LNF content. Formation of a new phase with an orthorhombic symmetry was observed in the concentration range 35 ≤ x< 70. Lower transport properties of the (100 - x)LSM-xLNF, 43 ≤ x ≤ 53, compositions as compared to the parent LSM and LNF perovskites can be explained with the formation of a new phase with orthorhombic structure. The (100 - x)LSM-xLNF single phase perovskites possess metallic type of conductivity in a narrow concentration and temperature range.
Original language | English |
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Pages (from-to) | 1432-1435 |
Number of pages | 4 |
Journal | Solid State Ionics |
Volume | 179 |
Issue number | 27-32 |
DOIs | |
Publication status | Published - 30 Sept 2008 |
Externally published | Yes |
Keywords
- Electrical conductivity
- Perovskites
- Semiconducting-metallic transition
- Solid oxide fuel cell
ASJC Scopus subject areas
- General Chemistry
- General Materials Science
- Condensed Matter Physics