Abstract
In the present work, it was reported for the first time the new synthesis of Sm2NiMnO6 double perovskite oxides by solegel auto-combustion method. The Rietveld analysis of the X-ray ceramics diffraction pattern recorded at room temperature for Sm2NiMnO6 ceramics sintered at 1000 degrees C/5 min from powders obtained at 700 degrees C/7 h confirm the formation of the double perovskite with a monoclinic structure and the space group P2(1)/n. The HRTEM analysis shows clear lattice fringes that confirm a high crystallinity level of the material corresponding to the monoclinic structure. The non-linear dielectric character was checked for the first time in Sm2NiMnO6 double perovskite and the results reveals a strong nonlinearity and a small hysteretic behaviour. The present structural, magnetic and dielectric data make the Sm2NiMnO6 system due to its multiferroic character a promising candidate to different modern electronic devices applications. (C) 2015 Elsevier B.V. All rights reserved.