This paper discusses the results of the research carried out to study the structure, optical properties and thermophysical properties of a sample (nanopowder with a true density of 4.96 g/cm³, a particle size of 60 nm and a purity of 98.5%, SkySpring Nanomaterials, USA) with high purity. Based on the results of X-ray diffraction, the crystalline phase of MnFe₂O₄ ferrite nanoparticles was completely obtained and the values of the lattice parameters were determined. The results of the MID-IR analysis showed that the absorption coefficient (α) reaches its maximum value at 748 cm−1 wave number. The optical properties of the as-prepared nanostructures were also investigated by VERTEX 70 V diffuse reflectance spectroscopy (DRS). As can be seen from the results of the DSC analysis, the effects occurring in the temperature range up to 300∘C clearly reflect the nature of the phase transitions and the amount of energy generated in the ferrite samples.

中文翻译：

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锰铁氧体纳米粒子的热物理和结构特性

本文讨论了为研究样品（真密度为 4.96 g/cm ³，粒径为 60 nm，纯度为 98.5% 的纳米粉末，SkySpring纳米材料，美国）具有高纯度。根据X射线衍射结果，完全得到了MnFe ₂ O ₄铁氧体纳米粒子的晶相，并确定了晶格参数值。中红外分析结果表明，吸收系数(α)在 748 厘米处达到最大值-1波数。还通过 VERTEX 70 V 漫反射光谱 (DRS) 研究了所制备的纳米结构的光学性质。从 DSC 分析的结果可以看出，在高达300∘C 清楚地反映了相变的性质和铁氧体样品中产生的能量。