Abstract Pr doped spinel nanoferrites having following composition Cu Prx Fe2-xO4 (x = 0, 0.25, 0.50, 0.75, 1.00) were synthesized using sol-gel route. Prosademium (Pr) which is a rare earth metal was doped to tailor the properties of the Cu spinel nanoferrites. Characterization tools such as FTIR, XRD, FESEM and VSM were employed to investigate the phase, absorption bands, structure, microstructure and magnetic properties. FTIR was used to see the absorption bands and force constants of the Pr doped Cu spinel nanoferrites. Crystallite size, lattice parameters, cell volume and micro strains were determined from XRD data. Bulk density, X-ray density and porosity of the Pr doped Cu spinel nanoferrites were also calculated. Rietveld refinement was applied to investigate the detailed structural parameters of the Pr doped Cu spinel nanoferrites. Unit cell software based on regression diagnostics was also used to determine the structural factors of the prepared nanoferrites. It was noticed that Cu nanoferrite showed the single-phase cubic structure whereas the Pr doped Cu ferrite depicted the orthorhombic structure respectively. FESEM show large amount of agglomerations at x = 0.00 whereas irregular shape of the particles confirms the nanosized of ferrites as well. Magnetic properties were determined from VSM which elaborated the remanence, coercivity, saturation magnetization, anisotropy constant (K), initial permeability, Bohr magneton and Y K (Yafet and Kittel) angles. Magnetic saturation, coercivity, remanence and anisotropy constant were decreased with Pr concentration in Cu spinel ferrite. However, Y K angles were increased with Pr doping in Cu spinel nanoferrites. Microwave frequency response was evaluated which confirm the use of these Pr doped Cu spinel nanoferrites in the range of 5.2 Ghz–9.5 GHz respectively. The properties of these Pr doped Cu spinel nanoferrites suggested their used for microwave devices, memory devices and recording media applications.

中文翻译：

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镨 (Pr) 掺杂的 Cu 纳米晶尖晶石铁氧体的结构 Rietveld 细化和磁性特征

摘要 采用溶胶-凝胶法合成了具有以下成分Cu Prx Fe2-xO4 (x = 0, 0.25, 0.50, 0.75, 1.00)的Pr掺杂尖晶石纳米铁氧体。掺杂稀土金属 Prosademium (Pr) 以调整 Cu 尖晶石纳米铁氧体的特性。采用 FTIR、XRD、FESEM 和 VSM 等表征工具来研究物相、吸收带、结构、微观结构和磁性能。FTIR 用于查看 Pr 掺杂的 Cu 尖晶石纳米铁氧体的吸收带和力常数。从XRD数据确定微晶尺寸、晶格参数、单元体积和微应变。还计算了 Pr 掺杂的 Cu 尖晶石纳米铁氧体的体积密度、X 射线密度和孔隙率。应用 Rietveld 精修来研究 Pr 掺杂的 Cu 尖晶石纳米铁氧体的详细结构参数。还使用基于回归诊断的晶胞软件来确定制备的纳米铁氧体的结构因素。注意到Cu纳米铁氧体显示出单相立方结构，而掺Pr的Cu铁氧体分别描绘了正交结构。FESEM 在 x = 0.00 处显示出大量团聚，而颗粒的不规则形状也证实了铁氧体的纳米尺寸。磁性能由 VSM 确定，其中详细说明了剩磁、矫顽力、饱和磁化强度、各向异性常数 (K)、初始磁导率、玻尔磁子和 YK (Yafet 和 Kittel) 角。Cu尖晶石铁氧体中的磁饱和度、矫顽力、剩磁和各向异性常数随着Pr浓度的增加而降低。然而，在 Cu 尖晶石纳米铁氧体中掺杂 Pr 会增加 YK 角。对微波频率响应进行了评估，这证实了这些掺杂 Pr 的铜尖晶石纳米铁氧体分别在 5.2 Ghz–9.5 GHz 的范围内使用。这些掺杂 Pr 的铜尖晶石纳米铁氧体的特性表明它们可用于微波设备、存储设备和记录介质应用。