The temperature dependence investigation of the frequency dispersion of the electrical properties of lithium-iron spinel doped with La, Y

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The temperature dependence investigation of the frequency dispersion of the electrical properties of lithium-iron spinel doped with La, Y

A.V. Vakalyuk et al · Vasyl Stefanyk Carpathian National University · 2024

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Autor / responsable

A.V. Vakalyuk et al

Editorial

Vasyl Stefanyk Carpathian National University

Año

2024

ISSN

1729-4428

ISSN

1729-4428

Idioma

Inglés

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The temperature-frequency dependences of the electrical characteristics of Li2 Fe2,5-x Mex O4 (Ме=La;Y, x=0.01; 0.03; 0.05) spinels synthesized by the «sol-gel» autocombustion technology were obtained by the method of impedance spectroscopy in the temperature range of 298-473 K. Based on their analysis, the main mechanisms of conductivity of these materials in the studied temperature range were identified: hopping and activation, which are competing. The effect of doping lithium-iron spinels with rare-earth metal impurities on these conductivity mechanisms has been investigated. It has been established that the presence of impurities in small concentrations in the synthesized samples significantly decreases their conductivity, mainly due to destruction of the hopping mechanism of electronic conductivity.

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APA 7

al, A. V. E. (2024). The temperature dependence investigation of the frequency dispersion of the electrical properties of lithium-iron spinel doped with La, Y. https://doi.org/10.15330/pcss.25.1.148-156

MLA

al, A.V. Vakalyuk et. "The temperature dependence investigation of the frequency dispersion of the electrical properties of lithium-iron spinel doped with La, Y." 2024. https://doi.org/10.15330/pcss.25.1.148-156.

Chicago

al, A.V. Vakalyuk et. 2024. "The temperature dependence investigation of the frequency dispersion of the electrical properties of lithium-iron spinel doped with La, Y.". https://doi.org/10.15330/pcss.25.1.148-156.

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al, A. V. E. 2024, The temperature dependence investigation of the frequency dispersion of the electrical properties of lithium-iron spinel doped with La, Y, Vasyl Stefanyk Carpathian National University, available at: https://doi.org/10.15330/pcss.25.1.148-156 [Accessed 5 Aug. 2026].

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Título: The temperature dependence investigation of the frequency dispersion of the electrical properties of lithium-iron spinel doped with La, Y

Autor / colaboradores: A.V. Vakalyuk et al

Editorial: Vasyl Stefanyk Carpathian National University

Año de publicación: 2024

ISSN: 1729-4428

ISSN: 1729-4428

Idioma: Inglés

Materias

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impedance spectroscopy; spinel; frequency dispersion of electrical conductivity; activation energy; arrhenius curves; hopping mechanism of conductivity