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Formation of BiFeO3 Nanoparticles Using Impinging Jets Microreactor
摘要： The influence of the reactants mixing in an impinging jets microreactor of the formation of single-phase nanocrystals of bismuth orthoferrite has been studied. The 30–100 nm amorphous particles are formed under the impinging jets microreactor conditions, which are converted in bismuth orthoferrite with mean crystallite size 17 nm at 420°С.
关键词： impinging jets microreactor,phase formation mechanism,bismuth ferrite
更新于2025-09-09 09:28:46
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Dielectric and Ferroelectric Response of Multiphase Bi-Fe-O Ceramics
摘要： The structural, dielectric, and ferroelectric characterization of multiphase Bi-Fe-O prepared with an excess of Bi up to 20% is reported. It is found that the dominant phase in all samples is the BiFeO3 perovskite in addition to an increasing amount of the Bi-rich sillenite phases (Bi12.5Fe0.5O19.48/Bi25FeO39) with the Bi excess content. At room temperature, the multiphase Bi-Fe-O results in advanced electrical properties, with higher dielectric constant (161 at 1 MHz) and low losses (tanδ ? 0.032 at 1 MHz). The ferroelectric character of multiphase ceramics is confirmed by PUND measurements, which shows increased polarization values and coercive field with respect to the single phase ceramics.
关键词： impurity phases,bismuth ferrite,PUND ferroelectric characterization,dielectric characterization,multiferroics
更新于2025-09-04 15:30:14