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Abstract <p>Microwave radiation of a gyrotron, during its interaction with powder mixtures, initiates plasma-chemical exothermic processes in air in which components of the initial powder mixture participate. In the experiments performed, use is made of bismuth ferrite (<InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11953_2025_11842_Article_IEq1.gif" Format="GIF" Height="16" Rendition="HTML" Resolution="72" Type="Linedraw" Width="53" /> </InlineMediaObject> <EquationSource Format="TEX">\({\text{BiFe}}{{{\text{O}}}_{3}}\)</EquationSource> <!--BullLeb2560245Ragimkhanova-m1--> </InlineEquation>) nanopowders with a&#xa0;particle size of 40–50 nm, which are transformed into spheroid microparticles with a size up to 100&#xa0;μm and a complicated structure and surface morphology. The surface of the synthesized particles has nanoinclusions and dips, due to which the surface area increases (by ~1.5 times). On the surface of the produced particles, two types of inclusions (grains) with an increased iron content and a size up to 3 μm are found against the background of bismuth ferrite, with their shape having the form of quadrangles and hexagons.</p>

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Modification of Bismuth Ferrite BiFeO3 Nanopowder under the Action of High-Power Pulsed Microwave Radiation of a Gyrotron

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • Z. G. Ragimkhanova,
  • G. B. Ragimkhanov,
  • S. Kh. Gadzimagomedov,
  • D. V. Malakhov,
  • A. S. Sokolov,
  • E. V. Voronova,
  • N. N. Skvortsova,
  • N. G. Gusein-zade

摘要

Abstract

Microwave radiation of a gyrotron, during its interaction with powder mixtures, initiates plasma-chemical exothermic processes in air in which components of the initial powder mixture participate. In the experiments performed, use is made of bismuth ferrite ( \({\text{BiFe}}{{{\text{O}}}_{3}}\) ) nanopowders with a particle size of 40–50 nm, which are transformed into spheroid microparticles with a size up to 100 μm and a complicated structure and surface morphology. The surface of the synthesized particles has nanoinclusions and dips, due to which the surface area increases (by ~1.5 times). On the surface of the produced particles, two types of inclusions (grains) with an increased iron content and a size up to 3 μm are found against the background of bismuth ferrite, with their shape having the form of quadrangles and hexagons.