A comprehensive study of dielectric, magnetic and anticancerous properties of lanthanum manganite perovskite nanoparticles

Present study reports the combustion synthesis of lanthanum manganite (LaMnO3) perovskites with rhombohedral structure having R-3 C space group. The structural and morphological evaluations of synthesized nanoparticles were done by XRD, FTIR, SEM and XPS. The BDS analysis reveals different types of polarization associated with dielectric properties. Frequency-dependent dielectric properties such as dielectric constant, dielectric loss, ac conductivity and capacitance were analyzed at room temperature. BDS analysis explain Maxwell-Wagner effect and Jhonscher universal power law. Room temperature and low temperature magnetic properties were investigated using VSM. M(T) measurements shows second order phase transition from ferromagnetic (FM) to paramagnetic (PM) at 230 K Curie temperature. The detailed magnetic characteristics of lanthanum manganite perovskites were clearly explained by Curie – Wiess and Arrott's plot. The hyperthermial behavior were studied with normal and pre-heated LaMnO3. The in - vitro anticancerous analysis were explained by MTT assay. The LC50 values of normal and preheated specimens are 124.145 µg/ml and 86.159 µg/ml, respectively. The reduction in LC50 value of preheated sample underscores its superior anticancer efficacy compared to normal sample.