El-Masry Mai M, Arman M M
Basic Science Dept., Higher Engineering Institute, Thebes Academy, Cairo, Egypt.
Materials Science Lab (1), Physics Department, Faculty of Science, Cairo University, Giza, Egypt.
Sci Rep. 2025 May 13;15(1):16636. doi: 10.1038/s41598-025-99604-6.
This study successfully synthesized and characterized CoFeO, NiFeO, and ZnFeO ferrite nanoparticles. The results showed that CoFeO and NiFeO exhibited ferrimagnetic behavior, while ZnFeO demonstrated antiferromagnetic properties. These magnetic characteristics influence the material's response to electromagnetic radiation, such as visible and infrared light. Optical studies revealed that CoFeO had the highest radiation absorption, while ZnFeO showed superior reflection and transmission. The ferrites' band gap energies, ranging from 3.3 to 3.6 eV, played a key role in their optical properties, with higher energy absorption and lower energy reflection. The refractive index varied with photon energy, reaching its peak at lower energy levels due to oxygen vacancies. Additionally, the optical conductivity increased with higher photon energy, peaking at 4.3 eV. These findings suggest promising applications in light transmission and sensing, with ferrites offering versatile optical properties that can be tailored for various uses.
本研究成功合成并表征了CoFeO、NiFeO和ZnFeO铁氧体纳米颗粒。结果表明，CoFeO和NiFeO表现出亚铁磁性行为，而ZnFeO表现出反铁磁性特性。这些磁性特征影响材料对电磁辐射的响应，如可见光和红外光。光学研究表明，CoFeO具有最高的辐射吸收，而ZnFeO表现出优异的反射和透射。铁氧体的带隙能量在3.3至3.6 eV之间，在其光学性质中起关键作用，具有较高的能量吸收和较低的能量反射。折射率随光子能量而变化，由于氧空位，在较低能量水平达到峰值。此外，光导率随光子能量的增加而增加，在4.3 eV时达到峰值。这些发现表明在光传输和传感方面具有广阔的应用前景，铁氧体具有多种光学性质，可针对各种用途进行定制。
