Journal
JOURNAL OF MOLECULAR STRUCTURE
Volume 1250, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.molstruc.2021.131715
Keywords
Niobates; Neodymium doping; Dielectric studies; IR and Raman spectra; Electron absorption; Emission and excitation spectra
Categories
Funding
- Polish Ministry of Education and Science for the Faculty of Production Engineering of Wroclaw University of Economics and Business (Department of Inorganic Chemistry)
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The Ca4Nb2O9-xNd2O3 (where x = 0.1-1.0) pseudobinary samples were synthesized by the high-temperature solid state method. The optical properties of Nd3+ ions in this oxide system were studied, and a structural phase transition dependent on the Nd2O3 oxide content was observed. Spectroscopic studies revealed a structural phase transition occurring at x = 0.5, leading to the transformation of the initial limited solid solution into the diphasic form of Ca-2 NdNbO6 and Nd2O3.
The Ca4Nb2O9-xNd2O3 (where x = 0.1-1.0) pseudobinary samples were synthesized by the high-temperature solid state method. Optical properties of Nd3+ ions in this oxide system were studied and related to the structural phase transition dependent on the Nd2O3 oxide content. Structural and optical properties are discussed based on ATR IR, dielectric, diffuse reflectance and emission spectra measurements. The spectroscopic studies show a structural phase transition occurring for x = 0.5 and for which the initial limited solid solution transforms to the diphasic form of Ca-2 NdNbO6 and Nd2O3. (C) 2021 Elsevier B.V. All rights reserved.
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