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<p>Pure and Ni-doped CoTiO<sub>3</sub> powders with a nominal composition of the Co<sub>(1–<i>x</i>)</sub>Ni<sub><i>x</i></sub>TiO<sub>3</sub> (with <i>x</i> = 0.00; 0.25; 0.50 and 0.75) were prepared by mechanical milling using solid-state reaction from NiO, Co<sub>3</sub>O<sub>4</sub> and TiO<sub>2</sub> powders as raw materials in mole ratio. The effect of Ni<sup>2+</sup> doping on structural, particle morphology, elemental composition, magnetic properties and microwaves absorption characteristics of Co<sub>(1–<i>x</i>)</sub>Ni<sub><i>x</i></sub>TiO<sub>3</sub> was investigated by X-ray diffraction, scanning electron microscope, energy dispersive spectroscopy, Raman spectroscopy, vibration samples magnetometer and vector network analyzer, respectively. It was found that all fabricated samples show in single phase with hexagonal structure. However, with the presence of Ni<sup>2+</sup> ions dopant, the particle size and saturation magnetization (<i>M</i><sub>s</sub>) values decrease, whereas the microwave absorption capability increases.</p>

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Effect of nickel doping in cobalt titanate on structural and magnetic properties for microwave-absorbing application

  • 期刊论文

  • 发表日期：

    2025年4月2日

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  • Yunasfi,
  • Annisa Intan Fhadilla,
  • Ramlan,
  • Mashadi,
  • Ade Mulyawan,
  • Didin S Winatapura,
  • Jan Setiawan,
  • Wisnu Ari Adi,
  • MP Izaak,
  • YE Gunanto

摘要

Pure and Ni-doped CoTiO3 powders with a nominal composition of the Co(1–x)NixTiO3 (with x = 0.00; 0.25; 0.50 and 0.75) were prepared by mechanical milling using solid-state reaction from NiO, Co3O4 and TiO2 powders as raw materials in mole ratio. The effect of Ni2+ doping on structural, particle morphology, elemental composition, magnetic properties and microwaves absorption characteristics of Co(1–x)NixTiO3 was investigated by X-ray diffraction, scanning electron microscope, energy dispersive spectroscopy, Raman spectroscopy, vibration samples magnetometer and vector network analyzer, respectively. It was found that all fabricated samples show in single phase with hexagonal structure. However, with the presence of Ni2+ ions dopant, the particle size and saturation magnetization (Ms) values decrease, whereas the microwave absorption capability increases.