Impedance and dielectric properties of Bi2Sn2-xFexO7 stannates

Автор: Udod L.V., Aplesnin S.S., Abdelbaki H., Konovalov S.O.

Журнал: Siberian Aerospace Journal @vestnik-sibsau-en

Рубрика: Technological processes and material science

Статья в выпуске: 1 vol.23, 2022 года.

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Bismuth stannates Bi2Sn2–хFeхO7, х = 0,1; 0,2, which reveal the properties of multiferroics, are investigated. The mechanism of interaction between dielectric and electronic subsystems is studied, based on measurements of electrical resistance at alternating current, impedance, capacitance and dielectric loss tangent in the temperature range 100–600 K at frequencies 102–106 Hz. From the comparison of dielectric permittivity and the reactive component of impedance, the paramagnetic contribution of electrons to the dynamic magnetic susceptibility was established. Impedance jumps on temperature were detected as a result of changes in structural characteristics. The temperature dependences of the permittivity are described in the Debye model. The activation character of relaxation time and two relaxation channels are found. The activation energy of electrons in the migratory polarization is calculated.

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Bismuth pyrostannate, permittivity, impedance, relaxation time, Debye model

Короткий адрес: https://sciup.org/148329614

IDR: 148329614 | DOI: 10.31772/2712-8970-2022-23-1-130-140

Список литературы Impedance and dielectric properties of Bi2Sn2-xFexO7 stannates

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