Effects of polyethylene glycol on structural and magnetic properties of SrFe12O19 nanoparticles prepared by sol-gel auto-combustion method

IF 3.9 3区材料科学 Q2 MATERIALS SCIENCE, MULTIDISCIPLINARY

Materials Science and Engineering: B Pub Date : 2025-07-01 DOI:10.1016/j.mseb.2025.118561

Linhao Cheng , Jiacheng Huang , Yang Sun , Shuolei Wei , Bing Teng , Jie Su , Yunzhong Chen

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Abstract

M-type strontium ferrites (SrM) are widely used in permanent magnets, high-density magnetic recording media, and microwave equipment. Herein, the effect of polyethylene glycol (PEG) on the structural and magnetic properties of SrM nanoparticles was studied by using the sol-gel self-combustion method. The properties of the samples were characterized by XRD, SEM, and VSM. XRD indicates that all samples consist of pure SrM phases. Compared to samples without PEG, SrM nanoparticles synthesized with an optimal PEG concentration (1 mg/ml) exhibited reduced lattice parameters and unit cell volume. SEM images reveal that the optimized samples effectively prevented particle agglomeration. The average particle size decreased from 162.3 nm to 91.6 nm. Magnetic studies demonstrated that the M_R increased from 27.7 emu/g to 32.8 emu/g, and M_S increased from 51.4 emu/g to 60.7 emu/g. Furthermore, the magnetocrystalline anisotropy constant increased from 4.3 × 10⁵ erg·cm⁻³ to 5.3 × 10⁵ erg·cm⁻³. This study is of significant importance for understanding the effects of different concentrations of PEG on the various properties of SrM nanoparticles.

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聚乙二醇对溶胶-凝胶自燃烧法制备的SrFe12O19纳米颗粒结构和磁性能的影响

m型锶铁氧体（SrM）广泛应用于永磁体、高密度磁记录介质和微波设备中。本文采用溶胶-凝胶自燃法研究了聚乙二醇（PEG）对SrM纳米颗粒结构和磁性能的影响。采用XRD、SEM、VSM对样品进行了表征。XRD分析表明，所有样品均由纯SrM相组成。与不含PEG的样品相比，以最佳PEG浓度（1 mg/ml）合成的SrM纳米颗粒具有更小的晶格参数和单位细胞体积。SEM图像显示，优化后的样品有效地防止了颗粒团聚。平均粒径由162.3 nm减小到91.6 nm。磁性研究表明，MR从27.7 emu/g增加到32.8 emu/g， MS从51.4 emu/g增加到60.7 emu/g。磁晶各向异性常数由4.3 × 105 erg·cm−3增加到5.3 × 105 erg·cm−3。本研究对于了解不同浓度聚乙二醇对SrM纳米颗粒各种性能的影响具有重要意义。

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来源期刊

Materials Science and Engineering: B 工程技术-材料科学：综合

CiteScore

5.60

自引率

2.80%

发文量

481

审稿时长

3.5 months

期刊介绍： The journal provides an international medium for the publication of theoretical and experimental studies and reviews related to the electronic, electrochemical, ionic, magnetic, optical, and biosensing properties of solid state materials in bulk, thin film and particulate forms. Papers dealing with synthesis, processing, characterization, structure, physical properties and computational aspects of nano-crystalline, crystalline, amorphous and glassy forms of ceramics, semiconductors, layered insertion compounds, low-dimensional compounds and systems, fast-ion conductors, polymers and dielectrics are viewed as suitable for publication. Articles focused on nano-structured aspects of these advanced solid-state materials will also be considered suitable.