Journal
BULLETIN OF MATERIALS SCIENCE
Volume 29, Issue 1, Pages 35-41Publisher
INDIAN ACAD SCIENCES
DOI: 10.1007/BF02709353
Keywords
AC studies; oxygen vacancies; translational hopping conduction; reorientational hopping conduction
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Polycrystalline ceramic samples of sodium bismuth titanate with simultaneous doping at A and B sites have been studied for the influence of these dopants on the electrical conduction mechanism. A.C. conductivity measurements were done on the prepared sample in a wide range of frequency and temperature. These studies revealed that the conduction in the sample arises due to hopping of bound charges. Four-term power law is used to characterize the frequency dependence of a.c. conductivity. From the temperature dependence of the exponents, the a.c. conduction in the samples is explained.
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