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The paper presents the resultsResult of a comprehensive study of the ceramicsCeramics modified withRare earth elements rare earth elements (REE) bismuth ferriteBismuth ferrite, BiFeO3BiFeO, which were obtained by two-stage synthesis followed by sintering using conventional ceramic technology. The optimal conditions for the phase formationPhase formation of high-density, strong, pure ceramics, their crystalline and grain structures were determined; dielectric spectra in a wide range of temperatures and frequencies of an alternating electric field and the thermophysical properties of objects were studied. It is shown that the anomalous “behavior” of some dielectric characteristics of BiFeO3/REE is due to the phenomena of Maxwell–Wagner relaxationRelaxation due to the spatial inhomogeneity of the structure of the studied media. A conclusion is made about the advisability of using the obtained results when creating similar objects and devices with their participation.

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Phase Formation, Size Effects and Maxwell–Wagner Relaxation Phenomena in Bismuth Ferrite Modified with Rare Earth Elements

  • 会议论文

  • 发表日期：

    2025年

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  • A. A. Zubrilin,
  • S. V. Khasbulatov,
  • S. I. Dudkina,
  • V. A. Aleshin,
  • K. P. Andryushin,
  • L. A. Shilkina,
  • S. N. Kallaev,
  • I. A. Verbenko,
  • L. A. Reznichenko

摘要

The paper presents the resultsResult of a comprehensive study of the ceramicsCeramics modified withRare earth elements rare earth elements (REE) bismuth ferriteBismuth ferrite, BiFeO3BiFeO, which were obtained by two-stage synthesis followed by sintering using conventional ceramic technology. The optimal conditions for the phase formationPhase formation of high-density, strong, pure ceramics, their crystalline and grain structures were determined; dielectric spectra in a wide range of temperatures and frequencies of an alternating electric field and the thermophysical properties of objects were studied. It is shown that the anomalous “behavior” of some dielectric characteristics of BiFeO3/REE is due to the phenomena of Maxwell–Wagner relaxationRelaxation due to the spatial inhomogeneity of the structure of the studied media. A conclusion is made about the advisability of using the obtained results when creating similar objects and devices with their participation.