Abstract
Nano-particles of Sn1-xCoxO2 (0 <= x <= 0.10) were synthesized successfully using co-precipitation method. Utilizing X-ray diffraction, the energy dispersion of the X-ray (EDX), transmission electron microscopy (TEM) and UV- double-beam spectrophotometer, the influence of [Co]/[Sn] on the properties of nanoparticles was examined. The influences of different Co concentrations are also stated on the optical and magnetic characterization of the nano-particles. XRD analysis shows that the Sn1-xCoxO2 nano-particles have a tetragonal polycrystalline structure. Additionally, the crystallite size, D is reduced while the microstrain, (e) increases with enhancement of the incorporation of Co in SnO2 lattice. The formation of high density defect states and the new phases of Co2+ and Sn4+ were accountable for the decrease of the energy optical bandgap E-g(opt) with Co-doping. In addition, the variation values of bandgap E-g(opt) and magnetic measurements of SnO2 nano-particles doped Co% plays a major role for selective coatings of optoelectronics; use as antireflective coating materials, and fabrication of optoelectronic devices. The measurements of magnetization using vibrating sample magnetometer illustrated a hysteresis loop in Co-doped SnO2 nano-particles. (C) 2021 Elsevier B.V. All rights reserved.