Gerhard Gritzner, Karl Kellner,
"The effect of iron doping in La0.8Sr0.257Fe0.05Co0.95O3-d; and Eu0.8Sr0.2(FexCo1-x)O3-d"
, in The European Physical Journal B: Condensed Matter and Complex Systems, Vol. 43, Seite(n) 297 - 303, 2005, ISSN: 1434-6036
Original Titel:
The effect of iron doping in La0.8Sr0.257Fe0.05Co0.95O3-d; and Eu0.8Sr0.2(FexCo1-x)O3-d
Sprache des Titels:
Englisch
Original Kurzfassung:
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.
Sprache der Kurzfassung:
Englisch
Journal:
The European Physical Journal B: Condensed Matter and Complex Systems
Volume:
43
Seitenreferenz:
297 - 303
Erscheinungsjahr:
2005
ISSN:
1434-6036
Anzahl der Seiten:
7
Notiz zur Publikation:
The effect of iron doping in La0.8Sr0.257Fe0.05Co0.95O3-d; and Eu0.8Sr0.2(FexCo1-x)O3-d; perovskites
Z. Németh, Z. Klencsár, E. Kuzmann, Z. Homonnay, A. Vértes, B. Lackner, K. Kellner,
G. Gritzner, J. Hakl, K. Vad, S. Mészáros, L. Kerekes, G. Molnár and A. Bousseksou
Eur. Phys. J. B, 43 (2005) 297 - 303
Forschungs-