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Вплив заміщення на механізм провідності ультрадисперсних літій-залізних шпінелей, заміщених іонами магнію

Вплив заміщення на механізм провідності ультрадисперсних літій-залізних шпінелей, заміщених іонами магнію

Abstract

Магній-заміщені літієві ферити загальної формули Li₀ˌ₅ Fe₂ˌ₅-ᵪ Mgᵪ O₄, де 0.0 ≤ x ≤ 0.8 були отримані методом золь-гель авто спалювання. Температурно-частотні залежності провідності синтезованих систем отримані в діапазоні частот від 0,01 до 105 Гц і в температурному околі від кімнатної до 723 К. Розраховані значення енергій активації показали, що при заміщенні їх значення зростає майже вдвічі порівняно з не заміщеним зразком. Магний-замещенные литиевые ферриты общей формулы Li₀ˌ₅ Fe₂ˌ₅-ᵪ Mgᵪ O₄, где 0.0 ≤ x ≤ 0.8 были получены методом золь-гель автогорения. Температурно-частотные зависимости проводимости синтезированных систем получены в диапазоне частот от 0,01 до 105 Гц и в области температур от комнатной до 723К. Полученные значения энергий активации показали, что при замещении их значения возрастают вдвое по сравнению с незамещенным образцом. Magnesium-substituted lithium ferrites, general formula Li₀ˌ₅ Fe₂ˌ₅-ᵪ Mgᵪ O₄, where 0.0 ≤ x ≤ 0.8, were synthesized by sol-gel autocombusting method. The temperature-frequency dependences of the conductivity of the synthesized systems are obtained in the frequency range from 0.01 to 105 Hz and in the temperature range from room temperature to 723 K. Calculated values of the activation energies showed that, during substitution, activation energies values of the samples increase twice compared to the un-substituted samples.

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Keywords

Імпеданс, Енергія активації, Механизм проводимости, Наноферит, Conduction mechanism, Activation energy, Impedance, Наноферрит, Энергия активации, Импеданс, Механізм провідності, Nanoferrite

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
0
Average
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