Nanoparticles of La1-xSrxMnO3 (0.23≤x≤0.25) manganite: features of synthesis and crystallochemical properties

Abstract Nanoparticles of lanthanum-strontium manganite were synthesized via sol-gel method. It was investigated that La1-xSrxMnO3 (0.23≤x≤0.25) precursors were formed by complexing reactions during the synthesis and pyrolysis of polymer sol. X-ray diffraction data showed that single-phase crystalline nanoparticles began to form in one-stage at 600°C; the level of crystallinity increased with the growth of the treatment temperature. It was shown that the heat treatment effected on the morphology of the particles. Magnetic fluids based on La1-xSrxMnO3 (0.23≤x≤0.25) nanoparticles were prepared and it was shown that heating efficiency of magnetic fluids in an alternating magnetic field strongly depended on their crystallochemical properties. It was established that La1- xSrxMnO3 (0.23≤x≤0.25) nanoparticles obtained at 800°C had optimal crystallochemical properties and morphology, possessed high heating efficiency in an alternating magnetic field and are expected to be promising for investigations as the inducers in magnetic hyperthermia.