TY - JOUR
T1 - Investigation of the Composition and Electromagnetic Properties of Lithium Ferrite LiFe5O8 Ceramics Synthesized from Ultradisperse Iron Oxide
AU - Surzhikov, Anatoly Petrovich
AU - Lysenko, E. N.
AU - Malyshev, A. V.
AU - Nikolaev, Evgeny Vladimirovich
AU - Zhuravkov, S. P.
AU - Vlasov, V. A.
PY - 2015/2/11
Y1 - 2015/2/11
N2 - 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.
AB - 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.
KW - ceramics
KW - electromagnetic properties
KW - LiFeO
KW - lithium ferrite
KW - microwave properties
KW - ultradisperse iron oxide
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U2 - 10.1007/s11182-015-0387-y
DO - 10.1007/s11182-015-0387-y
M3 - Article
JO - Russian Physics Journal
JF - Russian Physics Journal
SN - 1064-8887
ER -