Recently, LaFeO₃ has become the focus of intense research effort because it is a room-temperature single-phase multiferroic. Here, La_0.80Ce_0.20FeO₃ 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 La_0.80Ce_0.20FeO₃ 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, μ_eff, decreased as the Néel temperature, T_N, 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.

近年来，LaFeO ₃是室温下的单相多铁性体，因此成为研究热点。在这里，已经通过快速燃烧方法将La _0.80 Ce _0.20 FeO ₃纳米颗粒制备成纳米级的单相。将粉末在不同温度下退火以研究退火温度对理化特性的影响。La _0.80 Ce _0.20 FeO ₃样品的X射线衍射分析证实了空间群为Pbnm的正交结构。通过场发射扫描电子显微镜（FESEM）研究了样品的形态。样品具有海绵状的形态，并且孔径随着退火温度的升高而减小。测量样品的摩尔磁化率随温度的变化，并显示出反铁磁趋势。对于在500°C下退火的样品，有效磁矩_μeff随尼尔温度T _N的升高而降低。样品的介电性能和电导率表明具有类似半导体的性质，具有两种不同的导电机理。被调查样品的形态特征表明它们在气体传感应用，水排毒和锂离子电池中的潜在用途。