Dielectric Properties of some Aurivillius Phases in the Bi4Ti3O12 – BiFeO3 System

Mirosław M. Bućko; Joanna Polnar; Lucjan Kozielski

doi:10.4028/www.scientific.net/MSF.730-732.88

Paper Titles

A Possible Nanoreactor: CaFe-L(ayered)D(ouble)H(ydroxide) with Intercalated Cinnamate Derivatives
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Application of Impedance Spectroscopy for Bi_1−xNd_xFeO₃ Ceramics Characterization
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Characterization of Bi₆Fe₂Ti₃O₁₈ Ceramics with Impedance Spectroscopy
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Colloidal Processing of Fine Spinel Powders
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Dielectric Properties of some Aurivillius Phases in the Bi₄Ti₃O₁₂ – BiFeO₃ System
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Effect of Phosphogypsum on the Clinkerization Temperature of Portland Cement Clincker
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Fabrication of Bi₆Fe₂Ti₃O₁₈ Ceramics by Mixed Oxide Method
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Fabrication of La-Doped Bi₄Ti₃O₁₂ Ceramics
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First Principles Study of Copper Sulfides (for Applications as Photoconductors)
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HomeMaterials Science ForumMaterials Science Forum Vols. 730-732Dielectric Properties of some Aurivillius Phases...

Dielectric Properties of some Aurivillius Phases in the Bi₄Ti₃O₁₂ – BiFeO₃ System

Abstract:

Several compounds with Aurivillius-type structure in the Bi₄Ti₃O₁₂-BiFeO₃ system with the general formula Bi_m+1Fe_m–3Ti₃O_3m+3 showing multiferroic properties arouse an increasing interest due to their wide potential applications in electronics. The powders composed of the Aurivillius phase with m=5, 7 and 9 were successfully prepared by the co-precipitation-calcination route. The powders were ground and sintered, obtaining dense polycrystalline materials. The dielectric properties of the sintered materials were studied over a wide range of temperature and frequencies. A strong softening of the magnetic properties took place at 410°C, which stayed in good correlation with the recorded changes of the tan δ asymmetry and fact that it did not induce any anomaly of the Curie temperature at 670°C, where phase transition of the ferroelectric properties was determined.