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This paper reports optical, magnetic and antibacterial properties of calcium-magnesium nanostructure which was prepared by a simple thermal treatment method. Calcination was conducted at temperatures 500 K, The influence of calcination temperature on the degree of crystallinity, microstructure, and phase composition was investigated by different characterization techniques, i.e., X-ray diffraction (XRD), field emission scanning electron microscope (FESEM), and Fourier transform infrared spectroscopy (FT-IR), respectively. The effect of calcination temperature on band gap energy was studied by UV–vis absorption spectra. Magnetic properties of nanoscale materials, such as saturation magnetization (Ms) and magnetic induction (Hc), were investigated by a vibration sample magnetometer (VSM) device in the room, Results showed that calcium-magnesium nanoparticles have been behavior of superparamagnetism. the antibacterial characteristics of studied samples were investigated against Staphylococcus aureus (S. aureus) and Bacilli as Gram- positive bacteria and Escherichia coli (E. coli) as a Gram- negative bacteria with Grass cultivation method

Keywords: thermal treatment, saturation magnetization, band gap energy. Antibacterial properties

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