• Corpus ID: 239768870

Complex dielectric behaviours in $BiFeO_{3}/Bi_{2}Fe_{4}O_{9}$ ceramics

@inproceedings{Orr2021ComplexDB,
  title={Complex dielectric behaviours in \$BiFeO\_\{3\}/Bi\_\{2\}Fe\_\{4\}O\_\{9\}\$ ceramics},
  author={G Orr and Andrey Gorychev and Paul Ben Ishai},
  year={2021}
}
The complex dielectric permittivity of a sintered ceramic tablet consisting of 70.5 % BiFeO3 and 27.7% Bi2Fe4O9 was analyzed as a function of temperature from -120 °C to 230 °C. The results reveal a complicated dielectric response with temperature activated relaxation features. They also reveal a ferroelectric phase transition that decayed with repeated heating cycles of the tablet. The source of the behaviour is assigned to relaxation processes happening along the grain boundaries of differing… 

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TLDR
It is shown that the exchange bias can be electrically controlled through a change in the relative proportion of 109° domain walls and proposed solutions toward a reversible process.
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