This work highlights the results obtained from different characterizations for the Mg-based spinel ferrite, MgFe₂O₄ nanomaterials prepared by ball milling followed by annealing at different temperatures, 800 °C, 900 °C, 1000 °C, and 1100 °C each for 2 h. From XRD analysis, the structural data such as lattice parameter, average crystalline size, micro-strain, and dislocation density of different MgFe₂O₄ samples are obtained. While the produced as-milled powder revealed the majority of the peaks are cubic MgFe₂O₄ phase materials, the annealed samples yielded phase pure nanocrystalline cubic spinel MgFe₂O₄ materials. The photoluminescence (PL) intensity of emission peak seen at ~ 417 nm (λ^excitation = 375 nm) for different nanocrystalline MgFe₂O₄ materials varies regardless of the annealing temperatures. The FT-IR results imply the intrinsic stretching vibrations of the Fe–O at the tetrahedral site for these spinel materials. A gradual increase of the saturation magnetization was observed for the present MgFe₂O₄ materials upon increasing the annealing temperature. These nanocrystalline MgFe₂O₄ materials may have potential applications in magnetic fluid (hyperthermia) and near-infrared (NIR) pigment applications.

这项工作着重介绍了通过球磨，随后分别在800°C，900°C，1000°C和1100°C的不同温度下退火制备的Mg基尖晶石铁氧体，MgFe ₂ O ₄纳米材料的不同表征所获得的结果。2小时。通过XRD分析，获得了不同MgFe ₂ O ₄样品的晶格参数，平均晶体尺寸，微应变和位错密度等结构数据。研磨后的粉末显示出大多数峰为立方MgFe ₂ O ₄相材料，而退火后的样品则产生了相纯纳米晶立方尖晶石MgFe ₂ O _4相材料。对于不同的纳米晶MgFe ₂ O ₄材料，在〜417 nm（λ^激发= 375 nm）处观察到的发射峰的光致发光（PL）强度随退火温度而变化。FT-IR结果表明这些尖晶石材料的Fe-O在四面体部位固有的拉伸振动。随着退火温度的升高，目前的MgFe ₂ O ₄材料的饱和磁化强度逐渐增加。这些纳米晶体MgFe ₂ O ₄材料在磁流体（高温）和近红外（NIR）颜料应用中可能具有潜在的应用。