Preparation and microwave absorption properties of Ag-doped BaTiO3 nanocomposites

In this paper, a series of novel Ag doped BaTiO3(Ba1-xAgxTiO3) nanocomposites have been successfully synthesized via the sol-gel method. The XRD pattern indicates that the structure of the synthesized samples is exactly the same as the pure BaTiO3, which belongs to the tetragonal system. Besides, the prepared materials were characterized by employing scanning electron microscope (SEM), of which the results show that the morphologies of the samples are closer to tetragonal with an average diameter below 100 nm. Moreover, for the sample with x equal to 0.8%, the maximum reflection loss of 26.8 dB is obtained at 14.8 GHz. Most importantly, for those samples with less than 1% Ag doped, the bandwidth with the loss above 10 dB are even wider than 2 GHz. (C) 2014 Elsevier B.V. All rights reserved.