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

Research output: Contribution to journalArticle

Abstract

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.

Original languageEnglish
JournalRussian Physics Journal
DOIs
Publication statusAccepted/In press - 11 Feb 2015

Fingerprint

electromagnetic properties
iron oxides
ferrites
lithium
ceramics
electrical resistance
saturation
magnetization
bismuth
reagents
Curie temperature
sintering
grain size
microwaves
iron
oxidation

Keywords

  • ceramics
  • electromagnetic properties
  • LiFeO
  • lithium ferrite
  • microwave properties
  • ultradisperse iron oxide

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

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title = "Investigation of the Composition and Electromagnetic Properties of Lithium Ferrite LiFe5O8 Ceramics Synthesized from Ultradisperse Iron Oxide",
abstract = "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.",
keywords = "ceramics, electromagnetic properties, LiFeO, lithium ferrite, microwave properties, ultradisperse iron oxide",
author = "Surzhikov, {Anatoly Petrovich} and Lysenko, {E. N.} and Malyshev, {A. V.} and Nikolaev, {Evgeny Vladimirovich} and Zhuravkov, {S. P.} and Vlasov, {V. A.}",
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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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