Electrical properties of defect structure in Ni-doped (Ba1-x
Srx)TiO3 ceramics were studied by means of electron spin resonance (ESR), thermally stimulated current (TSC), dielectric and conduction measurements. A set of experimental results revealed that the nickel cations were located on the B-site of the perovskite in the form of Ni2+ and mainly Ni3+ leading to a slight increase of the diffusion characteristics of the para-ferroelectric transition and that the enhanced electric conduction observed at high temperatures is due to oxygen vacancy migration towards the cathode.
The authors and their affiliation should read
Mustapsha Hafid, Souhaila Moudden, Chantal Proust1, Elisabeth Husson1, Shinsuke Takeoka2, Sousuke Nishida2, Tatsuo Fukami2 and Jianxin Sheng2
Faculty of Science, IBN Tofail University, B.P. 133, 14000 Kenitra, Morocco1CRPHT-CNRS, 1 D Avenue de la Recherche Scientifique, 45071 Orleans Cedex 2, Frence2Faculty of Engineering, Shinshu University, 500 Wakasato, Nagano 380, Japan
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