Khoreem Sadiq H, Al-Hammadi A H
Department of Optometry and Vision Science/Faculty of Medical Sciences, Al-Razi University, Sana'a, Yemen.
Center of Research and Studies, Amran University, Amran, Yemen.
Discov Nano. 2025 Jan 6;20(1):3. doi: 10.1186/s11671-024-04180-9.
The study highlights the significant effects of Zn ions concentration on the optical properties of BaNiZnFeO ferrites, emphasizing the tunability of the band gap through Zn doping and explores their potential to enhance their optical properties. The barium-nickel ferrite powder, with the composition BaNiZnFeO, was synthesized using the ceramic method. The effects of Zn doping were analyzed using X-ray diffraction (XRD) and UV‒visible (UV-Vis) spectroscopy. XRD confirmed a pure single-phase W-type hexagonal structure, with an increase in both grain size and lattice constant proportional to the Zn content. The optical properties were assessed through UV‒visible spectroscopy, revealing an increaseing of the band gap with increasing Zn concentration, confirming material's semiconducting behavior.All optical constants, exhibited consistent variation with increasing Zn substitution.. Additionally, both electrical and optical conductivities increased with rising photon energy, while the conductivity peak decreased with higher Zn content. The electric susceptibility was found to decrease as Zn concentration increased. The results indicate that Zn doping leads to significant changes in lattice parameters, crystallite size, and bandgap energy, suggesting potential applications in optoelectronics, photonics devices, and energy storage."
该研究突出了锌离子浓度对钡镍锌铁氧体光学性质的显著影响，强调了通过锌掺杂实现带隙的可调性，并探索了其增强光学性质的潜力。采用陶瓷法合成了组成为BaNiZnFeO的钡镍铁氧体粉末。利用X射线衍射（XRD）和紫外可见（UV-Vis）光谱分析了锌掺杂的影响。XRD证实为纯单相W型六方结构，晶粒尺寸和晶格常数均随锌含量的增加而增大。通过紫外可见光谱对光学性质进行了评估，结果表明随着锌浓度的增加带隙增大，证实了该材料的半导体行为。所有光学常数均随锌取代量的增加呈现出一致的变化。此外，电导率和光导率均随光子能量的增加而增加，而电导率峰值随锌含量的增加而降低。发现随着锌浓度的增加，电极化率降低。结果表明，锌掺杂导致晶格参数、微晶尺寸和带隙能量发生显著变化，表明其在光电子学、光子器件和能量存储方面具有潜在应用。
