caa a22 4500 463211944 CHVBK 20180405153144.0 cr unu---uuuuu 170326e20070801xx s 000 0 eng 10.1007/s00339-007-3989-6 doi (NATIONALLICENCE)springer-10.1007/s00339-007-3989-6 Electrical properties of a lead-free perovskite ceramic: (Na0.5Sb0.5)TiO3 [Elektronische Daten] [K. Prasad, Lily,, K. Kumari, K.P. Chandra, K.L. Yadav, S. Sen] Polycrystalline (Na0.5Sb0.5)TiO3 was prepared using a high-temperature solid-state reaction method. An XRD analysis indicated the formation of a single-phase monoclinic structure. Complex impedance studies revealed the presence of grain boundary effects from 300°C onwards. Also, the dielectric relaxation in the system was found to be of a non-Debye type. The ac conductivity data were used to evaluate the density of states at the Fermi level, the minimum hopping length and activation energy of the compound. The dc electrical and thermal conductivities of grain and grain boundary have been assessed. The correlated barrier hopping model was found to successfully explain the mechanism of charge transport in (Na0.5Sb0.5)TiO3. Springer-Verlag, 2007 Prasad K. Materials Research Laboratory, University Department of Physics, T.M. Bhagalpur University, 812007, Bhagalpur, India aut Lily, Materials Research Laboratory, University Department of Physics, T.M. Bhagalpur University, 812007, Bhagalpur, India aut Kumari K. Materials Research Laboratory, University Department of Physics, T.M. Bhagalpur University, 812007, Bhagalpur, India aut Chandra K.P. Department of Physics, S.M. College (T.M. Bhagalpur University), 812001, Bhagalpur, India aut Yadav K.L. Department of Physics, Indian Institute of Technology, 247667, Roorkee, India aut Sen S. National Metallurgical Laboratory, 831007, Jamshedpur, India aut Applied Physics A Springer-Verlag 88/2(2007-08-01), 377-383 0947-8396 88:2<377 2007 88 339 https://doi.org/10.1007/s00339-007-3989-6 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00339-007-3989-6 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Prasad K. Materials Research Laboratory, University Department of Physics, T.M. Bhagalpur University, 812007, Bhagalpur, India aut NATIONALLICENCE 700 1- Lily Materials Research Laboratory, University Department of Physics, T.M. Bhagalpur University, 812007, Bhagalpur, India aut NATIONALLICENCE 700 1- Kumari K. Materials Research Laboratory, University Department of Physics, T.M. Bhagalpur University, 812007, Bhagalpur, India aut NATIONALLICENCE 700 1- Chandra K.P. Department of Physics, S.M. College (T.M. Bhagalpur University), 812001, Bhagalpur, India aut NATIONALLICENCE 700 1- Yadav K.L. Department of Physics, Indian Institute of Technology, 247667, Roorkee, India aut NATIONALLICENCE 700 1- Sen S. National Metallurgical Laboratory, 831007, Jamshedpur, India aut NATIONALLICENCE 773 0- Applied Physics A Springer-Verlag 88/2(2007-08-01), 377-383 0947-8396 88:2<377 2007 88 339 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer