Abstract
In recent years, BFTOs Aurivillius phases pay attention due to their potential as single-phase nanostructured magnetic materials. Multilayered perovskite-like compounds with the highest level of multiferroic BiFeO3 in their structure have the most promising potential. This work reports the solid-state synthesis features, thermal behavior, dielectric and magnetic properties of single phase ceramic material based on the nine-layered Aurivillius phase, i.e., Bi10Fe6Ti3O30. XRD, helium pycnometry and SEM/EDX measurements were conducted to study the phase formations, morphology and elemental composition. The thermal behavior in the temperature ranging from RT to 1400 °C was investigated by DSC/TG and dilatometry, in air. The optimal synthesis conditions of the ceramic material, as well as the temperatures of its sintering and decomposition were determined. The features of the compound Bi10Fe6Ti3O30 formation were discussed. The ferroelectric phase transition around 820 °C was verified by the temperature-dependent dielectric measurement and DSC method. The synthesized material undergoes the magnetic phase transition around 270 K. The data obtained in Mössbauer spectroscopy and magnetometry experiments showed that there were significant differences of magnetic behavior between the nine-layered phase and other BFTOs Aurivillius phases due to an increase in bismuth orthoferrite content in the perovskite-like block of the compound Bi10Fe6Ti3O30.
Published Version
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