Synthesis, structure, and impedance spectra of iron-containing bismuth titanates |
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| Authors: | I V Piir M S Koroleva N A Sekushin V E Grass Yu I Ryabkov |
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| Institution: | 1. Institute of Chemistry, Komi Scientific Center, Ural Branch, Russian Academy of Sciences, Syktyvkar, Russia
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| Abstract: | Iron-containing bismuth titanates with a cubic pyrochlore Bi1.6Fe x Ti2O7 ? δ structure were synthesized by the ceramic method. The region in which iron-containing pyrochlores are formed was determined. The pycnometric specific gravity of the samples was measured. Based on XRD and pycnometric specific gravity data, it was concluded that iron atoms lie in the bismuth sublattice. The electric properties of the materials were studied by high-temperature impedance spectroscopy. A strong effect of polarization on the impedance spectra was found. |
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