Preparation, magnetic characterization, and optical band gap of EuTiO3 nanoparticles

Perovskite-type polycrystalline EuTiO3 (ETO) nanoparticles were synthesized using the simple sol–gel technique. We investigated the magnetic properties of the as-prepared ETO nanoparticles and revealed the G-AFM phase below the Néel temperature (TN). Furthermore, the transition from the G-AFM order to the FM order, induced by magnetic field, was also demonstrated. The optical band gap of 1.03 eV for the as-prepared ETO nanoparticles was determined from the UV–visible absorption spectra.