Investigation of the Composition and Electromagnetic Properties of Lithium Ferrite LiFe5O8 Ceramics Synthesized from Ultradisperse Iron Oxide

Anatoly Petrovich Surzhikov, E. N. Lysenko, A. V. Malyshev, Evgeny Vladimirovich Nikolaev, S. P. Zhuravkov, V. A. Vlasov

Результат исследований: Материалы для журналаСтатьярецензирование

Аннотация

Structural, magnetic, and electric characteristics of LiFe5O8 synthesized from ultradisperse iron oxide powder are investigated. The basic Fe2O3 reagent is prepared by oxidation of iron nanopowder with particle sizes of 100 nm synthesized by the electroexplosive method. It is demonstrated that LiFe5O8 is characterized by fine-grained ceramic structure with average grain size of 1.4 μm, high values of the Curie temperature (~630°С), specific electrical resistance (107 Ω⋅cm), and saturation magnetization (>3300 G). Thus, lithium ferrite so obtained without additives has the parameters suitable for its application as a microwave ferrite material. It is also demonstrated that addition of bismuth ferrite to the lithium ferrite composition during its sintering yields lower values of the specific electrical resistance and relatively high values of the density and saturation magnetization.

Язык оригиналаАнглийский
ЖурналRussian Physics Journal
DOI
СостояниеПринято/в печати - 11 фев 2015

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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