Please use this identifier to cite or link to this item:
|Title:||Impedance study of giant dielectric permittivity in BaFe0.5Nb0.5O3 perovskite ceramic|
Physics and Astronomy
|Abstract:||Single-phase BaFe0.5Nb0.5O3(BFN) ceramics were prepared by solid-state reaction method and were characterized by X-ray Diffraction (XRD) technique. Then, impedance spectroscopy measurements were conducted in a frequency range from 100 Hz to 1 MHz and in a temperature range from 293 to 600 K. Relaxation phenomena of non-Debye type have been observed in the BFN ceramics, as confirmed by the Cole-Cole plots. The higher values of ε′ at the lower frequencies are explained on the basis of the Maxwell-Wagner (MW) polarization model. Complex impedance analysis enables us to separate the contributions from grains and grain boundaries of our samples. We found that at higher temperatures grain boundary resistance is higher than grain resistance, irrespective of composition. Crown Copyright © 2009.|
|Appears in Collections:||CMUL: Journal Articles|
Files in This Item:
There are no files associated with this item.
Items in CMUIR are protected by copyright, with all rights reserved, unless otherwise indicated.