Magnetization Measurements and 57Fe Mössbauer Studies of LaNi1-xFexO3 (0.0≤x≤0.2)

摘要: Magnetization measurements and 57 Fe Mossbauer study of LaNi 1- x O 3 (0≤ ≤0.2) were made. Temperature independent susceptibility LaNiO increases with substitution. At high temperatures, the increment due to Fe, obeys Curie-Weiss law, µ eff 4 B /Fe. low a small amount remanent magnetization appears spectra show hyperfine magnetic splittings. The value H hf (≃400 kOe) extrapolated 0 K that I S (≃0.34 mm/s) are considerably smaller than typical ones for 3+ in octahedral sites ionic oxides. magnetically ordered phase at temperatures seems be spin-glass or mictomagnet which moments frozen, coupled by long range exchange interactions addition nearest neighbor superexchange interactions.