G. Chinna Venkata Subbaiah, Nasina Madhusudhana Rao, Maddikera Kalyan Chakravarthi
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引用次数: 0
摘要
通过对固态反应生成的纳米结晶粉末进行退火处理，获得了 x = 0.02 和 y = 0.02、0.04、0.06 和 0.08 的 Ce(2-x-y)GdxDyyO2-δ 纳米粒子，其尺寸范围为 15.81 至 40.42 nm。发现掺杂钆和掺杂镝与晶格扩展之间存在相关性；晶格参数从 5.423 Å 增加到 5.468 Å。通过光致发光分析，确定了红色、绿色、蓝色和紫色发射。SEM 和 EDS 验证了球形纳米颗粒的元素分布均匀。随着磁矩和矫顽力场的增加，磁性测量显示出顺磁性。
Effect of Transition Metal (Gd, Dy) Co-doping on Structural, Optical, and Magnetic Properties of CeO2 Nanoparticles by Solid-State Reaction
Ce(2-x–y)GdxDyyO2-δ nanoparticles with x = 0.02 and y = 0.02, 0.04, 0.06, and 0.08 with a size range of 15.81 to 40.42 nm have been obtained by annealing the solid-state reaction-derived nanocrystalline powders. Correlations between Gd and Dy doping and lattice expansion were found; lattice parameters increased from 5.423 to 5.468 Å. When Gd and Dy content increased, optical investigations showed unexpected bandgap behaviour that did not follow the predicted reduction. Red, green, blue, and violet emissions have been identified via photoluminescence analysis. SEM and EDS verified the homogenous elemental distribution of spherical nanoparticles. With a growing magnetic moment and coercive field, magnetic measurements showed paramagnetic activity.
期刊介绍：
The Brazilian Journal of Physics is a peer-reviewed international journal published by the Brazilian Physical Society (SBF). The journal publishes new and original research results from all areas of physics, obtained in Brazil and from anywhere else in the world. Contents include theoretical, practical and experimental papers as well as high-quality review papers. Submissions should follow the generally accepted structure for journal articles with basic elements: title, abstract, introduction, results, conclusions, and references.
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