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Abstract <p>This study examines the synthesis of FeCoCu nanowires (NWs) with different Cu concentrations within the pores of 30-nm-diameter polymer track membranes. The dependence of the NW elemental composition on the synthesis conditions is analyzed. The results demonstrate that the composition changes in a non-linear manner as the deposition voltage increases, enabling the formation of NWs with a broad range of Cu content. Examining the magnetic properties of the NWs reveals a nonmonotonic dependence of coercivity and remanent magnetization on Cu concentration, with both parameters reaching their maximum at 11 at % Cu. The angular dependence of coercivity and remanent magnetization confirms the existence of uniaxial anisotropy along the NW. Compared to binary FeCo NWs, the incorporation of Cu increases both coercivity and remanent magnetization, a phenomenon that can be attributed to its impact on magnetocrystalline anisotropy or domain wall pinning. Ferromagnetic behavior is preserved for Cu concentrations up to 75 at %. Studying the optical density of an array of NWs containing 75 at % Cu demonstrates plasmon resonance in the infrared spectral region.</p>

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Structural and Magnetic Properties of Ternary Alloyed FeCoCu Nanowires

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • D. R. Khairetdinova,
  • I. M. Doludenko,
  • D. A. Ulybyshev,
  • V. K. Belyaev,
  • A. A. Anikin,
  • L. V. Panina

摘要

Abstract

This study examines the synthesis of FeCoCu nanowires (NWs) with different Cu concentrations within the pores of 30-nm-diameter polymer track membranes. The dependence of the NW elemental composition on the synthesis conditions is analyzed. The results demonstrate that the composition changes in a non-linear manner as the deposition voltage increases, enabling the formation of NWs with a broad range of Cu content. Examining the magnetic properties of the NWs reveals a nonmonotonic dependence of coercivity and remanent magnetization on Cu concentration, with both parameters reaching their maximum at 11 at % Cu. The angular dependence of coercivity and remanent magnetization confirms the existence of uniaxial anisotropy along the NW. Compared to binary FeCo NWs, the incorporation of Cu increases both coercivity and remanent magnetization, a phenomenon that can be attributed to its impact on magnetocrystalline anisotropy or domain wall pinning. Ferromagnetic behavior is preserved for Cu concentrations up to 75 at %. Studying the optical density of an array of NWs containing 75 at % Cu demonstrates plasmon resonance in the infrared spectral region.