Abstract
La0.8Sr0.257Fe0.05Co0.95O3-d; perovskite is investigated by 57Fe transmission and emission Mössbauer spectroscopy, X-ray diffraction, AC magnetic susceptibility and magnetotransport measurements.
Temperature dependence of the 57Fe M¨ossbauer isomer shift, quadrupole splitting, magnetic hyperfine field, line broadening, and relative spectral area is presented in a detailed manner for La0.8Sr0.257Fe0.05Co0.95O3-d;. The oxidation state of iron is determined to be Fe3+, and the presence of preferential electronic charge compensation Fe3+ → Fe4+ over that of Co3+ → Co4+ is excluded. Relaxation
of iron magnetic moments reflected by the 57Fe Mössbauer spectra of La0.8Sr0.257Fe0.05Co0.95O3-d; are interpreted as evidence for the existence of superparamagnetic like Co clusters and a corresponding cluster glass magnetic phase formed below T ≈ 65 K.
| Originalsprache | Englisch |
|---|---|
| Seiten (von - bis) | 297 - 303 |
| Seitenumfang | 7 |
| Fachzeitschrift | The European Physical Journal B: Condensed Matter and Complex Systems |
| Volume | 43 |
| Publikationsstatus | Veröffentlicht - 2005 |
Wissenschaftszweige
- 104005 Elektrochemie
- 104006 Festkörperchemie
- 104014 Oberflächenchemie
- 104017 Physikalische Chemie
- 105113 Kristallographie
- 105116 Mineralogie
- 503013 Fachdidaktik Naturwissenschaften
- 204 Chemische Verfahrenstechnik
- 204001 Anorganisch-chemische Technologie
- 205016 Werkstoffprüfung
- 210006 Nanotechnologie
- 211104 Metallurgie
Dieses zitieren
- APA
- Author
- BIBTEX
- Harvard
- Standard
- RIS
- Vancouver