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<p>Nickel oxide nanoparticles were prepared via a co-precipitation method followed by calcination at varying temperatures. The properties (magnetic, structural and optical) of the synthesized nanoparticles were investigated using UV-visible spectroscopy, X-ray diffraction, transmission electron microscopy, temperature-dependent Raman spectroscopy, and vibrating sample magnetometry. Raman studies revealed a prominent one-magnon scattering peak at 33.7&#xa0;cm⁻<sup>1</sup>, corresponding to the out-of-plane mode of antiferromagnetic resonance. Additionally, magnetization measurements confirmed the antiferromagnetic nature of the NiO nanoparticles, with the onset of nanomagnetic effects observed in the hysteresis curve. These findings could expand the potential applications of antiferromagnetic materials, particularly in ultrafast magnetic recording technologies.</p>

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One-magnon excitation in antiferromagnetically ordered NiO nanoparticles

  • 期刊论文

  • 发表日期：

    2025年6月16日

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  • Manisha Tyagi,
  • V. Bhasker Raj

摘要

Nickel oxide nanoparticles were prepared via a co-precipitation method followed by calcination at varying temperatures. The properties (magnetic, structural and optical) of the synthesized nanoparticles were investigated using UV-visible spectroscopy, X-ray diffraction, transmission electron microscopy, temperature-dependent Raman spectroscopy, and vibrating sample magnetometry. Raman studies revealed a prominent one-magnon scattering peak at 33.7 cm⁻1, corresponding to the out-of-plane mode of antiferromagnetic resonance. Additionally, magnetization measurements confirmed the antiferromagnetic nature of the NiO nanoparticles, with the onset of nanomagnetic effects observed in the hysteresis curve. These findings could expand the potential applications of antiferromagnetic materials, particularly in ultrafast magnetic recording technologies.