caa a22 4500 463224639 CHVBK 20180405153223.0 cr unu---uuuuu 170326e20070401xx s 000 0 eng 10.1007/s10853-006-0804-2 doi (NATIONALLICENCE)springer-10.1007/s10853-006-0804-2 Characterization of electrical behaviour of Si modified BaSnO3 electroceramics using impedance analysis [Elektronische Daten] [Ashok Kumar, R. Choudhary] The compounds BaSn1−x Si x O3 (x=0-15mol%) have been prepared by high temperature solid-state reaction route. Powder X-ray diffraction pattern of the samples reveal the formation of a single phase solid solution. It was found that single phase compositions have a cubic crystal structure similar to that of pure barium stannate at room temperature. The a.c. impedance analysis has been carried out in the frequency range 100Hz-1MHz for temperature ranging from 300K to 750K. Analysis of a.c. impedance data using the complex impedance plane gives the a.c. and d.c. resistance of negative temperature resistance of coefficient (NTCR) electroceramics. Complex impedance plane and complex electric modulus formalism are employed to determine the inhomogeneous nature of the electroceramics. This reveals the presence of single elements in the equivalent circuit at elevated temperature. Grain effects are more prominent than that of grain boundary effect at elevated temperature in the material matrix. The electrical conductivity increases sharply with rise in temperature at elevated temperature due to the thermally activated cations. Master modulus analysis provided an evidence of non-exponential type conductivity relaxation occurring in the materials at higher temperatures. Springer Science+Business Media, LLC, 2007 Kumar Ashok Department of Metallurgy and Materials Engineering, Indian Institute of Technology, 721302, Kharagpur, India aut Choudhary R. Department of Physics and Meteorology, Indian Institute of Technology, 721302, Kharagpur, India aut Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/7(2007-04-01), 2476-2485 0022-2461 42:7<2476 2007 42 10853 https://doi.org/10.1007/s10853-006-0804-2 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s10853-006-0804-2 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Kumar Ashok Department of Metallurgy and Materials Engineering, Indian Institute of Technology, 721302, Kharagpur, India aut NATIONALLICENCE 700 1- Choudhary R. Department of Physics and Meteorology, Indian Institute of Technology, 721302, Kharagpur, India aut NATIONALLICENCE 773 0- Journal of Materials Science Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com 42/7(2007-04-01), 2476-2485 0022-2461 42:7<2476 2007 42 10853 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer