Effect of calcination temperature on structural and magnetic properties of polypropylene glycol stabilized nickel ferrite nanoparticles

IF 4.3 2区化学 Q2 CHEMISTRY, MULTIDISCIPLINARY

BMC Chemistry Pub Date : 2025-04-21 DOI:10.1186/s13065-025-01454-w

Samreen Zahra, Uzma Naz, Misbah Irshad, Asma Sheikh, Sarwat Zahra

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引用次数: 0

Abstract

Background

Aqueous route of sol–gel method was used to synthesize nanocrystalline nickel ferrite (NiFe₂O₄) from a stoichiometric mixture of nickel nitrate hexahydtrate and ferric nitrate nonahydrate precursors using aqueous ethanol as solvent and polypropylene glycol as a stabilizing agent. The gel obtained was calcined at various temperatures ranging from 500 °C to 900 °C. The effect of calcination temperature on structural and magnetic properties of nickel ferrite was determined by X–ray diffraction, infrared spectroscopy, thermogravimetry, field emission scanning electron microscopy and vibrating sample magnetometry.

Results

The results showed a single phase nickel ferrite with a cubic spinel structure having particles of irregular shape and different sizes ranging from 10 to 20 nanometers, randomly distributed to form aggregates.

Conclusions

The results revealed that the use of polypropylene glycol as a stabilizing agent significantly reduced the agglomeration of nickel ferrite nanoparticles. However, loosely aggregated grains were obtained that got separated with the rise in calcination temperature leading to the formation of more prominent and well–dispersed structures at 900 ºC. Moreover, the samples exhibited high coercivity indispensible for the application of nanoparticles in storage and magnetic devices.

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煅烧温度对聚丙二醇稳定镍铁氧体纳米粒子结构和磁性能的影响

以六水合硝酸镍和非水合硝酸铁为前驱体，以乙醇为溶剂，聚丙烯乙二醇为稳定剂，采用水相法合成纳米铁酸镍（NiFe2O4）。得到的凝胶在500℃到900℃的不同温度下煅烧。采用x射线衍射、红外光谱、热重、场发射扫描电镜和振动样品磁强计等方法研究了煅烧温度对铁氧体镍结构和磁性能的影响。结果制备出具有立方尖晶石结构的单相镍铁氧体，颗粒形状不规则，大小不等，粒径在10 ~ 20纳米之间，随机分布形成聚集体。结论聚丙烯乙二醇作为稳定剂可显著降低铁酸镍纳米颗粒的团聚。900℃时，随着煅烧温度的升高，颗粒聚集松散，颗粒分离，形成更加突出、分散良好的结构。此外，样品具有高矫顽力，这是纳米颗粒在存储和磁性器件中的应用所必需的。

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来源期刊

BMC Chemistry Chemistry-General Chemistry

CiteScore

5.30

自引率

2.20%

发文量

审稿时长

27 weeks

期刊介绍： BMC Chemistry, formerly known as Chemistry Central Journal, is now part of the BMC series journals family. Chemistry Central Journal has served the chemistry community as a trusted open access resource for more than 10 years – and we are delighted to announce the next step on its journey. In January 2019 the journal has been renamed BMC Chemistry and now strengthens the BMC series footprint in the physical sciences by publishing quality articles and by pushing the boundaries of open chemistry.