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<p>Nanostructured Sr<sub>2</sub>Ni(BO<sub>3</sub>)<sub>2</sub> was successfully synthesized using a solid-state route, yielding a monoclinic phase with distinctive fibrous and granular morphology. Structural and spectroscopic analyses confirm the integrity of the borate framework, while magnetic measurements reveal complex spin dynamics, including a transition from antiferromagnetic to paramagnetic states with an unusually low effective magnetic moment. Thermal and high-temperature X-ray diffraction (HT-XRD) studies expose sequential phase transitions between 400 and 800&#xa0;°C, accompanied by structural rearrangements. Notably, Sr₂Ni(BO₃)₂ displays a strong dielectric anomaly around 370–470&#xa0;°C, indicative of thermally activated relaxation processes. These findings point to Sr₂Ni(BO₃)₂ as a promising multifunctional material with potential for use in magneto-dielectric applications, thermal sensors, and smart electronic systems.</p>

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Comprehensive Study of Sr2Ni(BO3)2 Nanoparticles: Synthesis, Crystal Structure, Magnetic Evolution, and Dielectric Performance

  • 期刊论文

  • 发表日期：

    2025年9月3日

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  • F. E. N’faoui,
  • L. Boudad,
  • A. El Boukili,
  • H. Saadaoui,
  • M. Rouziéres,
  • M. Taibi

摘要

Nanostructured Sr2Ni(BO3)2 was successfully synthesized using a solid-state route, yielding a monoclinic phase with distinctive fibrous and granular morphology. Structural and spectroscopic analyses confirm the integrity of the borate framework, while magnetic measurements reveal complex spin dynamics, including a transition from antiferromagnetic to paramagnetic states with an unusually low effective magnetic moment. Thermal and high-temperature X-ray diffraction (HT-XRD) studies expose sequential phase transitions between 400 and 800 °C, accompanied by structural rearrangements. Notably, Sr₂Ni(BO₃)₂ displays a strong dielectric anomaly around 370–470 °C, indicative of thermally activated relaxation processes. These findings point to Sr₂Ni(BO₃)₂ as a promising multifunctional material with potential for use in magneto-dielectric applications, thermal sensors, and smart electronic systems.