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Facile Synthesis and Characterization of Nanospinel Ferrites: Structural, Magnetic, and Optical Studies
Russian Journal of Inorganic Chemistry ( IF 2.1 ) Pub Date : 2020-08-03 , DOI: 10.1134/s0036023620070104
Rahil Abbasi Hormozi , Haman Tavakkoli , Akbar Raissi Shabari , Mohsen Nikpour

Abstract—

Nanoparticles of spinel ferrites with composition MFe2O4 (M = Zn, Ni) have been effectively synthesized by hydrothermal and sol-gel routes, in which Triton-X 100 is used as a surfactant. The structure of ferrite nanoparticles has been characterized by X-ray diffraction, which has showed single cubic spinel phases for all the samples. The surface morphology and elemental composition have been examined by field emission-scanning electron microscopy (FE-SEM) and energy dispersive X-ray (EDX) spectroscopy. A combined morphology in shape of sphere, octagon, and agglomerated flakes were found on FESEM images for the nanoparticles synthesized by both methods. FTIR showed underlying absorption bands pertinent to the stretching vibration of metal at the octahedral and tetrahedral sites. Vibrating sample magnetometer (VSM) results showed saturation magnetization (Ms) and remanence (Mr) for spinels prepared by hydrothermal route to be more than those produced by sol-gel methods. The optical band gap values were estimated by diffuse UV-visible reflectance spectroscopy (DRS).


中文翻译:

纳米尖晶石铁氧体的简便合成与表征:结构,磁性和光学研究

摘要-

组成为MFe 2 O 4的尖晶石铁氧体的纳米粒子(M = Zn,Ni)已通过水热和溶胶-凝胶路线有效合成,其中使用Triton-X 100作为表面活性剂。铁氧体纳米颗粒的结构已通过X射线衍射表征,所有样品均显示出单立方尖晶石相。表面形貌和元素组成已通过场发射扫描电子显微镜(FE-SEM)和能量色散X射线(EDX)光谱进行了检查。在FESEM图像上发现了通过两种方法合成的纳米颗粒的球形,八边形和团聚薄片形状的组合形态。FTIR显示出与金属在八面体和四面体位置处的拉伸振动有关的潜在吸收带。振动样品磁力计(VSM)结果显示饱和磁化强度(M s)和水热法制备的尖晶石的剩磁(M r)大于溶胶-凝胶法制备的尖晶石。光学带隙值通过漫紫外可见反射光谱法(DRS)估算。
更新日期:2020-08-03
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