Single phased, polycrystalline mixed metal
oxides, La1-xSrxFeO3- (x = 0.0, 0.2, 0.3, 0.5) have b... more Single phased, polycrystalline mixed metal oxides, La1-xSrxFeO3- (x = 0.0, 0.2, 0.3, 0.5) have been prepared via the thermal decomposition of mixed metal acetylacetonate precursors. The precursors were synthesized at 55 °C by coprecipitation and decomposed at 450 oC to give multi-phased lanthanum strontium ferrite nanoparticles which were further calcined at 1000 oC to obtain the single-phased perovskite ferrites. The decomposition temperature of the precursors was determined by thermogravimetric analysis (TGA). The perovskite ferrites were then characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). SEM and XRD analyses showed that the particles of the ferrites were spherical and nano-sized with structures ranging from orthorhombic to rhombohedral as the Sr content increased. For x = 0.0, 0.2, and 0.3 (orthorhombic), the average FeO bond length and the unit cell volume decreased with increasing Sr content. Magnetic properties were investigated at room temperature (27 °C) using a vibrating sample magnetometer and the hysteresis loops showed that all the compositions exhibit antiferromagnetic ordering with a weak ferromagnetic interaction related to their structures. Increasing coercive fields were also observed with increasing Sr content.
Single phased, polycrystalline mixed metal
oxides, La1-xSrxFeO3- (x = 0.0, 0.2, 0.3, 0.5) have b... more Single phased, polycrystalline mixed metal oxides, La1-xSrxFeO3- (x = 0.0, 0.2, 0.3, 0.5) have been prepared via the thermal decomposition of mixed metal acetylacetonate precursors. The precursors were synthesized at 55 °C by coprecipitation and decomposed at 450 oC to give multi-phased lanthanum strontium ferrite nanoparticles which were further calcined at 1000 oC to obtain the single-phased perovskite ferrites. The decomposition temperature of the precursors was determined by thermogravimetric analysis (TGA). The perovskite ferrites were then characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM) and energy dispersive spectroscopy (EDS). SEM and XRD analyses showed that the particles of the ferrites were spherical and nano-sized with structures ranging from orthorhombic to rhombohedral as the Sr content increased. For x = 0.0, 0.2, and 0.3 (orthorhombic), the average FeO bond length and the unit cell volume decreased with increasing Sr content. Magnetic properties were investigated at room temperature (27 °C) using a vibrating sample magnetometer and the hysteresis loops showed that all the compositions exhibit antiferromagnetic ordering with a weak ferromagnetic interaction related to their structures. Increasing coercive fields were also observed with increasing Sr content.
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Papers by Edwin N
oxides, La1-xSrxFeO3- (x = 0.0, 0.2, 0.3, 0.5) have been prepared
via the thermal decomposition of mixed metal acetylacetonate
precursors. The precursors were synthesized at 55 °C by
coprecipitation and decomposed at 450 oC to give multi-phased
lanthanum strontium ferrite nanoparticles which were further
calcined at 1000 oC to obtain the single-phased perovskite
ferrites. The decomposition temperature of the precursors was
determined by thermogravimetric analysis (TGA). The
perovskite ferrites were then characterized by X-ray diffraction
(XRD), scanning electron microscopy (SEM) and energy
dispersive spectroscopy (EDS). SEM and XRD analyses showed
that the particles of the ferrites were spherical and nano-sized
with structures ranging from orthorhombic to rhombohedral as
the Sr content increased. For x = 0.0, 0.2, and 0.3
(orthorhombic), the average FeO bond length and the unit cell
volume decreased with increasing Sr content.
Magnetic properties were investigated at room temperature
(27 °C) using a vibrating sample magnetometer and the
hysteresis loops showed that all the compositions exhibit antiferromagnetic ordering with a weak ferromagnetic interaction
related to their structures. Increasing coercive fields were also
observed with increasing Sr content.
oxides, La1-xSrxFeO3- (x = 0.0, 0.2, 0.3, 0.5) have been prepared
via the thermal decomposition of mixed metal acetylacetonate
precursors. The precursors were synthesized at 55 °C by
coprecipitation and decomposed at 450 oC to give multi-phased
lanthanum strontium ferrite nanoparticles which were further
calcined at 1000 oC to obtain the single-phased perovskite
ferrites. The decomposition temperature of the precursors was
determined by thermogravimetric analysis (TGA). The
perovskite ferrites were then characterized by X-ray diffraction
(XRD), scanning electron microscopy (SEM) and energy
dispersive spectroscopy (EDS). SEM and XRD analyses showed
that the particles of the ferrites were spherical and nano-sized
with structures ranging from orthorhombic to rhombohedral as
the Sr content increased. For x = 0.0, 0.2, and 0.3
(orthorhombic), the average FeO bond length and the unit cell
volume decreased with increasing Sr content.
Magnetic properties were investigated at room temperature
(27 °C) using a vibrating sample magnetometer and the
hysteresis loops showed that all the compositions exhibit antiferromagnetic ordering with a weak ferromagnetic interaction
related to their structures. Increasing coercive fields were also
observed with increasing Sr content.