Structure and magnetic properties of Ni- doped gehlenite glass microspheres

•Preparation of Ni-doped gehlenite glass microspheres prepared by solid state reaction followed by flame synthesis.•Characterization of prepared microspheres by scanning electron microscopy and X-ray powder diffraction.•Study of thermal behaviour of Ni-doped gehlenite glass microspheres by differential scanning calorimetry.•Study the influence of Ni2+ ions on the structure of prepared systems by Raman spectroscopy.•Study of the magnetic properties of glass microspheres and study the influence of the crystallization on the magnetic properties of prepared system.