10.48788/DVUA/MNVHJZSmolyak Svitlana0000-0002-5403-4092SPM&RS CentreKarbivskyy Volodymyr0000-0003-0412-2788SPM&RS CentreZagorodniy Yuriy0000-0002-0404-5041I.M.Frantsevich Institute for Problems in Material Science of the NAS. of Ukraine,Kyiv, UkraineDataverseUA2026PhysicsX-ray Photoelectron SpectroscopyElectronic structureX-ray Photoelectron SpectroscopyElectronic structureNuclear magnetic resonanceBioactive glassSmolyak, SvitlanaSvitlanaSmolyakSPM&RS CentreG. V. Kurdyumov Institute for Metal PhysicsN.A.S. of UkraineSPM&RS Centre20192026-03-232026-03-27Spectra – processed experimental spectrumindex.php/journal/article/view/58719359876306155147101243494354865635102324326image/jpegimage/emfimage/jpegtext/plainimage/emfimage/jpegtext/plaintext/plainimage/emftext/plain1.0CC BY 4.0The electronic structure and structural characteristics of 5% Ga-doped sol-gel bioactive glass (type 45S5) were studied by X-ray photoelectron spectroscopy (XPS) and nuclear magnetic resonance (NMR) methods. ³¹P NMR spectra of bioactive materials indicate the formation of both isolated (PO4)3- and Si-O-P bonds, etc. in them, the relative part of which is proportional to the integral intensity of the corresponding NMR line. The synthesis of the samples was carried out by Doctor of Chemical Sciences Vitaliy A. Dubok.X-ray photoelectron spectra (XPS) were obtained on a JEOL JSPM-4610 photoelectron spectrometer using a non-monochromatic MgKα X-ray source (1253.6eV). During the experiment, the vacuum in the analytical chamber was 10⁻⁷ Pa, and the electron binding energy determination accuracy was 0.1. The samples for the study were prepared as dispersed powders deposited on an aluminum substrate. A thin gold layer was deposited on the insulating surface of the sample to prevent charge accumulation during the experiment. The X-ray photoelectron spectra were calibrated by the binding energy of Au 4f lines, which enabled high-precision determination of the electron binding energy for the elements in the sample. Nuclear magnetic resonance (NMR) spectra were recorded on a Bruker Avance400 spectrometer at room temperature. ³¹P NMR spectra were obtained for static samples (at a frequency 161,97 MHz). The magnetic field was referenced by the H₃PO₄ spectrum, which was used as an external standard for magnetic field calibration.Kyiv, UkraineNAS of Ukraine