Structure and dielectric study of relaxor behavior in (Ba0.7Sr0.3)0.4Na0.6(Ti0.9Sn0.1)0.4Nb0.6O3 ceramic
Source abstract
Abstract
In this research work, we investigated the compound (Ba0.7Sr0.3)0.4Na0.6(Ti0.9Sn0.1)0.4Nb0.6O3(BSNTSN) prepared by the solid-state solution. We determined its structural end dielectric properties. X-ray diffraction analyses revealed the formation of a single-phase cubic structure with a Pm3m space group. Relying on the dielectric study, it is obvious that the material has a relaxor behavior with frequency dispersion and a diffuse phase transition. In addition, the behavior of dielectric relaxation was examined using several models. The good agreement of the obtained results with Vogele Fulcher relationship reveals that the relaxor behavior and that of dipolar glass are similar to a polarization fluctuation that exceeds a static freezing temperature. It was demonstrated that temperature dependence on relaxation time and the static dielectric constant can be well fitted applying an exponential function. The temperature dependence of the electric modulus for various frequencies indicated a thermally activated relaxation assigned to the Maxwell–Wagner space charge relaxation phenomenon.
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Research context
OpenAlex topics: Ferroelectric and Piezoelectric Materials · Microwave Dielectric Ceramics Synthesis · Multiferroics and related materials
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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