Abstract
Recently, LaFeO3 has become the focus of intense research effort because it is a room-temperature single-phase multiferroic. Here, La0.80Ce0.20FeO3 nanoparticles have been prepared as a single phase on the nanoscale by a flash combustion methodology. The powder was annealed at different temperatures to investigate the influence of the annealing temperature on the physico-chemical features. X-ray diffraction analysis of La0.80Ce0.20FeO3 samples confirmed an orthorhombic structure with the space group Pbnm. The morphologies of the samples were studied by field-emission scanning electron microscopy (FESEM). The samples have a sponge-like morphology, and the pore size decreases with increasing annealing temperature. The molar magnetic susceptibilities of the samples were measured as a function of temperature, and showed an antiferromagnetic trend. For the sample annealed at 500 °C, the value of the effective magnetic moment, μeff, decreased as the Néel temperature, TN, increased. The dielectric properties and conductivities of the samples indicated a semiconductor-like nature, with two different conduction mechanisms. The morphological features of the investigated samples suggest their potential use in gas-sensing applications, water detoxification, and Li-ion batteries.
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