Structural and magnetic properties of lithium-substituted ferrite ceramics sintered by continuous electron beam heating

Abstract

In the present work, the structural and magnetic properties of lithium-zinc ferrite ceramics of Li_0.4Fe_2.4Zn_0.2O₄ composition, obtained using a complex high-energy impact including the mechanical activation of Fe₂O₃-Li₂CO₃-ZnO reagent mixture in planetary mill and radiation-thermal (RT) heating by continuous electron beam, were studied. The samples were divided into two batches: 1) with preliminary thermal synthesis; 2) without preliminary synthesis. All samples were studied by X-ray diffraction (XRD), electron microscopy (SEM) and thermal analysis (TG/DTG) techniques. It was established that the high density and low porosity of lithium-zinc ferrite ceramics can be received by using radiation-thermal heating. The samples are characterized by high values of specific magnetization and Curie temperature. Preliminary mechanical activation of the initial reagent mixture allows not only to accelerate the synthesis of ferrite materials, but also to combine the technological stages of synthesis and sintering in single stage of radiation-thermal processing.

Original language	English
Pages (from-to)	28-31
Number of pages	4
Journal	Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms
Volume	470
DOIs	https://doi.org/10.1016/j.nimb.2020.03.003
Publication status	Published - 1 May 2020

Keywords

Ceramics
Electron beam
Lithium-zinc ferrite
Mechanical activation
Radiation-thermal heating

ASJC Scopus subject areas

Nuclear and High Energy Physics
Instrumentation

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10.1016/j.nimb.2020.03.003

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Structural and magnetic properties of lithium-substituted ferrite ceramics sintered by continuous electron beam heating. / Lysenko, E. N.; Vlasov, V. A.; Malyshev, A. V.; Surzhikov, A. P.

In: Nuclear Instruments and Methods in Physics Research, Section B: Beam Interactions with Materials and Atoms, Vol. 470, 01.05.2020, p. 28-31.

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title = "Structural and magnetic properties of lithium-substituted ferrite ceramics sintered by continuous electron beam heating",

abstract = "In the present work, the structural and magnetic properties of lithium-zinc ferrite ceramics of Li0.4Fe2.4Zn0.2O4 composition, obtained using a complex high-energy impact including the mechanical activation of Fe2O3-Li2CO3-ZnO reagent mixture in planetary mill and radiation-thermal (RT) heating by continuous electron beam, were studied. The samples were divided into two batches: 1) with preliminary thermal synthesis; 2) without preliminary synthesis. All samples were studied by X-ray diffraction (XRD), electron microscopy (SEM) and thermal analysis (TG/DTG) techniques. It was established that the high density and low porosity of lithium-zinc ferrite ceramics can be received by using radiation-thermal heating. The samples are characterized by high values of specific magnetization and Curie temperature. Preliminary mechanical activation of the initial reagent mixture allows not only to accelerate the synthesis of ferrite materials, but also to combine the technological stages of synthesis and sintering in single stage of radiation-thermal processing.",

keywords = "Ceramics, Electron beam, Lithium-zinc ferrite, Mechanical activation, Radiation-thermal heating",

author = "Lysenko, {E. N.} and Vlasov, {V. A.} and Malyshev, {A. V.} and Surzhikov, {A. P.}",

year = "2020",

month = may,

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doi = "10.1016/j.nimb.2020.03.003",

language = "English",

volume = "470",

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T1 - Structural and magnetic properties of lithium-substituted ferrite ceramics sintered by continuous electron beam heating

AU - Lysenko, E. N.

AU - Vlasov, V. A.

AU - Malyshev, A. V.

AU - Surzhikov, A. P.

PY - 2020/5/1

Y1 - 2020/5/1

N2 - In the present work, the structural and magnetic properties of lithium-zinc ferrite ceramics of Li0.4Fe2.4Zn0.2O4 composition, obtained using a complex high-energy impact including the mechanical activation of Fe2O3-Li2CO3-ZnO reagent mixture in planetary mill and radiation-thermal (RT) heating by continuous electron beam, were studied. The samples were divided into two batches: 1) with preliminary thermal synthesis; 2) without preliminary synthesis. All samples were studied by X-ray diffraction (XRD), electron microscopy (SEM) and thermal analysis (TG/DTG) techniques. It was established that the high density and low porosity of lithium-zinc ferrite ceramics can be received by using radiation-thermal heating. The samples are characterized by high values of specific magnetization and Curie temperature. Preliminary mechanical activation of the initial reagent mixture allows not only to accelerate the synthesis of ferrite materials, but also to combine the technological stages of synthesis and sintering in single stage of radiation-thermal processing.

AB - In the present work, the structural and magnetic properties of lithium-zinc ferrite ceramics of Li0.4Fe2.4Zn0.2O4 composition, obtained using a complex high-energy impact including the mechanical activation of Fe2O3-Li2CO3-ZnO reagent mixture in planetary mill and radiation-thermal (RT) heating by continuous electron beam, were studied. The samples were divided into two batches: 1) with preliminary thermal synthesis; 2) without preliminary synthesis. All samples were studied by X-ray diffraction (XRD), electron microscopy (SEM) and thermal analysis (TG/DTG) techniques. It was established that the high density and low porosity of lithium-zinc ferrite ceramics can be received by using radiation-thermal heating. The samples are characterized by high values of specific magnetization and Curie temperature. Preliminary mechanical activation of the initial reagent mixture allows not only to accelerate the synthesis of ferrite materials, but also to combine the technological stages of synthesis and sintering in single stage of radiation-thermal processing.

KW - Ceramics

KW - Electron beam

KW - Lithium-zinc ferrite

KW - Mechanical activation

KW - Radiation-thermal heating

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