Abstract In the present study, the preparation of nanocrystalline strontium vanadium nanohexaferrites was undertaken using a sol-gel auto-combustion method. The structural and morphological properties were characterized using X-ray diffraction (XRD), Fourier transform infra-red (FT-IR) analysis, and scanning electron microscopy (SEM). The XRD analysis showed that the crystallite sizes (t) of the products vary between 55 and 60 nm, while the SEM analysis confirmed the hexagonal platelet structure of the products. The magnetic hysteresis loops indicated that the synthesized nanohexaferrites exhibit ferrimagnetic-like (FM) behavior. The deduced saturation (MS) and the remnant (Mr) magnetizations, the coercive (HC) and magneto-crystalline anisotropy (Ha) fields diminished as the V3+ content increased. The Ha values are very high, pointing to the hard FM characteristics of the synthesized nanohexaferrites. Except for x = 0.0, the squareness ratios, Mr/MS, are below 0.50, suggesting the presence of multi-domain nano-sized particles for SrFe12−xVxO19 (0.00 ≤ x ≤ 0.1) nanohexaferrites.

中文翻译：

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钒取代Sr-纳米六铁氧体的显微组织和磁性研究

摘要 本研究采用溶胶-凝胶自燃法制备纳米晶锶钒纳米六铁氧体。使用 X 射线衍射 (XRD)、傅里叶变换红外 (FT-IR) 分析和扫描电子显微镜 (SEM) 对结构和形态特性进行了表征。XRD 分析表明产物的微晶尺寸 (t) 在 55 和 60 nm 之间变化，而 SEM 分析证实了产物的六方片晶结构。磁滞回线表明合成的纳米六铁氧体表现出类亚铁磁 (FM) 行为。推导出的饱和 (MS) 和剩余 (Mr) 磁化强度、矫顽力 (HC) 和磁晶各向异性 (Ha) 场随着 V3+ 含量的增加而减小。Ha值非常高，指向合成的纳米六铁氧体的硬 FM 特性。除了 x = 0.0，矩形比 Mr/MS 低于 0.50，表明 SrFe12-xVxO19 (0.00 ≤ x ≤ 0.1) 纳米六铁氧体存在多域纳米尺寸颗粒。