Lopera, AlexRamirez, Miguel Angel [UNESP]Garcia, ClaudiaPaucar, CarlosMarin, Jairo2014-12-032014-12-032014-02-01Inorganic Chemistry Communications. Amsterdam: Elsevier Science Bv, v. 40, p. 5-7, 2014.1387-7003http://hdl.handle.net/11449/111743Ca-1 -xSmxCu3Ti4O12 (x = 0.0, 0.2, 03) electronic ceramics were fabricated via the chemical route using metal nitrate solutions in order to improve the dielectric properties of this ceramic. X-ray diffraction (XRD) analysis indicated the formation of a single CaCu3Ti4O12 (CCTO). Grain size of the samples doped with Sm3+ was in the range of 1-2 mu m, as opposed to 50-100 mu m in the pure samples of CCTO. The cutoff frequency with the doping was remarkably shifted, from 1 MHz (pure CCTO) to 10 MHz (doped CCTO). Meanwhile, the real dielectric (epsilon(r)) and imaginary dielectric (epsilon '') constants showed a decrease as the doping was increased. (C) 2013 Elsevier B.V. All rights reserved.5-7engCCTOSamariumCitrate-nitrate routeDielectric propertiesArtigo10.1016/j.inoche.2013.11.025WOS:000331506600002Acesso restrito