NEXAFS and FTIR spectroscopy of Co-doped SrBi$_2$Nb$_2$O$_9$

Nadezhda A. Zhuk ; Elena U. Ipatova ; Boris A. Makeev ; Sergey V. Nekipelov ; Dmitriy S. Beznosikov ; Lubov V. Rychkova

Žurnal Sibirskogo federalʹnogo universiteta. Matematika i fizika, Tome 15 (2022) no. 1, pp. 5-12.

Résumé

The solid-phase ceramic method was used to synthesize cobalt-containing solid solutions based on SrBi$_2$Nb$_2$O$_9$. NEXAFS (Near Edge X-ray Absorption Fine Structure) and IR spectroscopy were used to study the electronic state of cobalt atoms in solid cross-links with a layered perovskite-like structure. It was found that cobalt atoms are in high-spin states of Co(III) and, mainly, Co(II) in an octahedral oxygen environment.

Détail

Keywords: IR spectroscopy, cobalt.
Mots-clés : Aurivillius phases, NEXAFS

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