Chemical state of Fe in LaNi1 ‑ xFexO3 and its effect on electrical conduction property
Abstract
Mössbauer absorption spectra of single phase LaNi1 ‑ xFexO3 (0.2 ≤ x ≤ 1.0) have been measured. Increase of quadrupole splitting with increasing x from 0.2 to 0.6 suggested successful substitution of Fe ion for Ni. Variation of isomer shift with x suggested valence of Fe approched 4+, i.e., concentration of itinerant hole on Fe increased with decrease of Fe content, showing agreement with increase of electrical conductivity with decreasing x from 1.0 to 0.4. It can be prospected that higher electrical conductivity might be obtained if sintering property of the specimens with x less than 0.4 is improved.
- Publication:
-
Hyperfine Interactions
- Pub Date:
- March 2012
- DOI:
- 10.1007/s10751-011-0404-7
- Bibcode:
- 2012HyInt.206...47H
- Keywords:
-
- LaNi<SUB>1 ‑ x</SUB>Fe<SUB>x</SUB>O<SUB>3</SUB>;
- Solid oxide fuel cells;
- Electrical conductivity;
- Mössbauer spectroscopy;
- Chemical State of Fe