Abstract
Electrical and dielectric properties of polycrystalline yttrium–iron garnet samples grown by the technology of radiation-thermal sintering in the fast electron beam are considered. In the frequency range from 25 Hz to 1 MHz, the normal complex permittivity, dielectric loss tangent, and ac conductivity spectra are measured. For comparison, in addition to frequency measurements, dc resistivity is measured. The temperature dependences of the above parameters are also measured at frequencies of 1 and 100 kHz in the temperature range of 25–300°C. The activation energies of the ac and dc conduction processes on the Arrhenius coordinates are determined by the temperature dependences of the conductivity. It is shown that as the sintering temperature increases from 1300 to 1450°C, the electrical parameters reach values characteristic of samples grown by conventional ceramic technology.
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This study was supported by the Russian Science Foundation (agreement no. 19-19-00694, May 6, 2019).
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Translated by A. Kazantsev
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Kostishin, V.G., Shakirzyanov, R.I., Nalogin, A.G. et al. Electrical and Dielectric Properties of Yttrium–Iron Ferrite Garnet Polycrystals Grown by the Radiation–Thermal Sintering Technology. Phys. Solid State 63, 435–441 (2021). https://doi.org/10.1134/S1063783421030094
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DOI: https://doi.org/10.1134/S1063783421030094