In this work, co-precipitation was used to synthesize NiLaFeCsOx = 0.1, 0.2) ferrite ceramic nanoparticles. Based on structural analyses, it can be shown that the nanoscale particles exhibit a single-phase cubic spinel structure and visible particle aggregation. The lattice parameters that are computed using the suggested cation distribution exhibit a strong correlation with the reported values. FESEM and HRTEM surface morphology investigations reveal somewhat aggregated, spherically-shaped nanoparticles. The analysis of EDX verifies the anticipated stoichiometry. The materials' soft magnetic behavior is demonstrated by the VSM study's saturation magnetization (). Magnetic coercivity, retentivity, and saturation magnetization all increased with increasing La ion concentration. In addition, the magnetic quality factor (Q) improved, the saturation magnetization () increased from 72.937 to 77.691 emu/g, and the coercivity () increased from 94.256 to 98.521 Oe. More significantly, for the La-substituted ferrite samples, the resonance frequency rose in concordance with the La ion concentration. In general, the substitution of rare earth La ions for Ni-Cs ferrite expands the applications of ferrite ceramics in radio frequency and microwave devices. This allows these materials to be used for high-frequency electronics, efficient electromagnets, magnetic data storage, and magnetic field sensing.

中文翻译：

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共沉淀法制备Ni1−xLaxFe2−xCsxO4 (x = 0.1,0.2)尖晶石铁氧体的结构、热形貌和磁性能

本工作采用共沉淀法合成了 NiLaFeCsOx = 0.1, 0.2) 铁氧体陶瓷纳米颗粒。基于结构分析，纳米级颗粒呈现出单相立方尖晶石结构和可见的颗粒聚集。使用建议的阳离子分布计算的晶格参数与报告的值具有很强的相关性。FESEM 和 HRTEM 表面形态研究揭示了一些聚集的球形纳米颗粒。EDX 分析验证了预期的化学计量。VSM 研究的饱和磁化强度 () 证明了材料的软磁行为。磁矫顽力、保持力和饱和磁化强度均随着La离子浓度的增加而增加。此外，磁品质因数（Q）提高，饱和磁化强度（）从72.937增加到77.691 emu/g，矫顽力（）从94.256增加到98.521 Oe。更重要的是，对于La取代的铁氧体样品，共振频率随着La离子浓度的增加而升高。总的来说，稀土La离子替代Ni-Cs铁氧体扩大了铁氧体陶瓷在射频和微波器件中的应用。这使得这些材料可用于高频电子、高效电磁体、磁性数据存储和磁场传感。