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Title: Electrical conductivity spectra of Sn doped BaTi{sub 0.95}Zr{sub 0.05}O{sub 3}

The alternating current (ac) conductivity spectra of Sn doped BaTi{sub 0.95}Zr{sub 0.05}O{sub 3} prepared by solid state reaction have been studied in the temperature range of 373–473 K. Mixed valency of Sn atoms and the oxygen vacancy controls electrical transport process. The ac conductivity follows Jonscher type power law as a function of frequency. Derived dc conductivity and hopping frequency follow Arrhenius type temperature dependency and have same activation energy. Almost temperature independent nature of frequency exponent indicates that the electrical conduction in Zr and Sn co-doped BaTiO{sub 3} relaxor is quantum mechanical electron tunneling. The conductivity spectra are perfectly scaled using the scaling parameters as dc conductivity and hopping frequency.
Authors:
; ;  [1]
  1. Department of Materials Science, Indian Association For the Cultivation of Science, Jadavpur, Kolkata-700032 (India)
Publication Date:
OSTI Identifier:
22304307
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Applied Physics; Journal Volume: 115; Journal Issue: 20; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; ACTIVATION ENERGY; ALTERNATING CURRENT; BARIUM COMPOUNDS; DOPED MATERIALS; ELECTRIC CONDUCTIVITY; FREQUENCY DEPENDENCE; OXYGEN; QUANTUM MECHANICS; SCALING; SOLIDS; SPECTRA; TEMPERATURE RANGE 0400-1000 K; TIN ADDITIONS; TITANATES; TUNNEL EFFECT; VACANCIES; ZIRCONIUM ADDITIONS