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<p>In the present work, solid-state reaction is used to disperse the holmium in cobalt ferrite (Co-ferrite) matrix at the Fe-site (CoFe<sub>2–<i>x</i></sub>Ho<sub><i>x</i></sub>O<sub>4</sub>) and reported structural, optical, magnetic and dielectric properties with a 0.005 increase of Ho-content from <i>x</i> = 0 to 0.02. The spinel structure is retained for all compounds with Ho-doping. The composition <i>x</i> = 0.005 showed different behaviour, which is assumed to be structural anisotropy. The optical and dielectric behaviour is supported by structural properties due to similar variation for the 0.005 sample and the correlations are reported. The small change in magnetization is supposed as the Ho-substitution at the octahedral site of the spinel structure and the size effects. The Ho-content in Co-ferrite increases the functionality of the material to be applicable in magnetic, optical and electrical devices.</p>

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Effect of holmium doping on structural, optical, dielectric and magnetic properties of cobalt ferrite

  • 期刊论文

  • 发表日期：

    2025年11月20日

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  • G Sharada,
  • N Pavan Kumar,
  • G Shwetha,
  • G Thirupathi,
  • P Sowjanya,
  • D Sreenivasu

摘要

In the present work, solid-state reaction is used to disperse the holmium in cobalt ferrite (Co-ferrite) matrix at the Fe-site (CoFe2–xHoxO4) and reported structural, optical, magnetic and dielectric properties with a 0.005 increase of Ho-content from x = 0 to 0.02. The spinel structure is retained for all compounds with Ho-doping. The composition x = 0.005 showed different behaviour, which is assumed to be structural anisotropy. The optical and dielectric behaviour is supported by structural properties due to similar variation for the 0.005 sample and the correlations are reported. The small change in magnetization is supposed as the Ho-substitution at the octahedral site of the spinel structure and the size effects. The Ho-content in Co-ferrite increases the functionality of the material to be applicable in magnetic, optical and electrical devices.