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Abstract <p>Nickel ferrite powders with a particle size of 4 nm were prepared by chemical coprecipitation. The imaginary part <InlineEquation ID="IEq1"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11954_2025_5806_Article_IEq1.gif" Format="GIF" Height="21" Rendition="HTML" Resolution="72" Type="Linedraw" Width="21" /> </InlineMediaObject> <EquationSource Format="TEX">\(\chi {\kern 1pt}^{{''}}\)</EquationSource> <!--BullPhys2571318Stolyar-m1--> </InlineEquation> of the magnetic susceptibility was measured at room temperature with a broadband ferromagnetic resonance spectrometer in the frequency range from 100 MHz to 10 GHz. The obtained frequency dependences of <InlineEquation ID="IEq2"> <InlineMediaObject> <ImageObject Color="BlackWhite" FileRef="11954_2025_5806_Article_IEq2.gif" Format="GIF" Height="21" Rendition="HTML" Resolution="72" Type="Linedraw" Width="20" /> </InlineMediaObject> <EquationSource Format="TEX">\(\chi^{{''}}\)</EquationSource> <!--BullPhys2571318Stolyar-m2--> </InlineEquation> are described within the framework of an isotropic superparamagnet model taking into account interparticle interactions.</p>

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Influence of Interparticle Interactions on the Frequency–Field Diagrams of the Imaginary Component of Magnetic Susceptibility of Nickel Ferrite Nanoparticles

  • 期刊论文

  • 发表日期：

    2025年11月7日

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  • S. V. Stolyar,
  • A. O. Shokhrina,
  • O. A. Li,
  • E. D. Nikolaeva,
  • R. S. Iskhakov,
  • A. M. Vorotynov,
  • D. A. Velikanov,
  • N. M. Boev,
  • M. N. Volochaev

摘要

Abstract

Nickel ferrite powders with a particle size of 4 nm were prepared by chemical coprecipitation. The imaginary part \(\chi {\kern 1pt}^{{''}}\) of the magnetic susceptibility was measured at room temperature with a broadband ferromagnetic resonance spectrometer in the frequency range from 100 MHz to 10 GHz. The obtained frequency dependences of \(\chi^{{''}}\) are described within the framework of an isotropic superparamagnet model taking into account interparticle interactions.