In this work, the local atomic structure of neodymium ions embedded in alumoborate glass (5 mol. % Nd2O3) is studied in comparison with the structure of neodymium ions in zinc phosphate glass (0.5 mol.% Nd2O3) using the Fourier analysis of the extended X-ray absorption fine structure (EXAFS) spectra near L3-edge of Nd. The EXAFS spectra of the neodymium oxide recorded at the K- and L3-edges of Nd were considered as an experimental standards. The usage of two absorption edges allowed to determine the spectral characteristics of multielectron excitations contributions to the spectrum and to increase the accuracy of the determined parameters of the local atomic structure. We found that the neodymium atom in alumuborate glass is surrounded, in average, by ~9.6 oxygen atoms at a distance of ~2.4 ?, and in zinc phosphate glass – by ~6.8 oxygen atoms at a distance of ~2.3 ?.
Leon A. Avakyan – Dr of Physical and Mathematical Sciences, Professor, Department of Theoretical and Computational Physics, Faculty of Physics, Southern Federal University (SFedU), Rostov-on-Don, Russia
Darina V. Khizhnyak – master student, Faculty of Physics, Southern Federal University (SFedU), Rostov-on-Don, Russia
Egor A. Tretyakov – PhD student, Department of Theoretical and Computational Physics, Faculty of Physics, Southern Federal University (SFedU), Rostov-on-Don, Russia
Mariam Z. Ziatdinova – PhD in Chemistry, assistant, Department of Chemical Technology of Glass and Glass-Ceramics, Mendeleev University of Chemical Technology of Russia (MUCTR), Moscow, Russia
Maxim P. Vetchinnikov – PhD in Chemistry, assistant, Department of Chemical Technology of Glass and Glass-Ceramics, Mendeleev University of Chemical Technology of Russia (MUCTR), Moscow, Russia
Vladimir V. Kriventsov – PhD in Chemistry, Synchrotron Radiation Facility SKIF Boreskov Institute of Catalysis SB RAS, r. p. Kol'tsovo, Novosibirsk Region, Russia
Georgy Yu. Shakhgildyan – PhD in Chemistry, Associate Prof., Department of Chemical Technology of Glass and Glass-Ceramics, Mendeleev University of Chemical Technology of Russia (MUCTR), Moscow, Russia
Lusegen A. Bugaev – Dr of Physico-Mathematical Sciences, Head of the Department of Theoretical and Computational Physics, Faculty of Physics, Southern Federal University (SFedU), Rostov-on-Don, Russia
Vladimir N. Sigaev – DSc. in Chemistry, Professor, Head of the International Center of Laser Technologies, Head of the P.D. Sarkisov International Laboratory of Functional Glass-based Materials, Head of the Department of Chemical Technology of Glass and Glass-Ceramics, Mendeleev University of Chemical Technology of Russia (MUCTR), Moscow, Russia
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