Evidence of two Yb3+ crystallographic sites occupancy in Y3Al5O12 ceramics from an in depth spectroscopic analysis

Year: 2022

Authors: Demirkhanyan G., Patrizi B., Kostanyan R., Li J., Pirri A., Feng YG., Xie TF., Wu LX., Vannini M., Becucci M., Zargaryan D., Toci G.

Autors Affiliation: Armenian Natl Acad Sci, Inst Phys Res IPR, Yerevan 0019, Armenia; CNR, INO, Via Madonna Piano 10, I-50019 Sesto Fiorentino, FI, Italy; CNR, IFAC, Via Madonna Piano 10C, I-50019 Sesto Fiorentino, FI, Italy; Chinese Acad Sci, Shanghai Inst Ceram, Key Lab Transparent & Optofunct Inorgan Mat, Shanghai 201899, Peoples R China; Armenian State Pedag Univ ASPU, Yerevan 0010, Armenia; Univ Firenze, Dipartimento Chim U Schiff, Via Lastruccia 3-13, I-50019 Sesto Fiorentino, FI, Italy.

Abstract: In this paper a complete spectroscopic analysis of low-temperature absorption and emission spectra of 10 at.% Yb:YAG ceramic are investigated. On the basis of the analysis of the temperature dependences of individual spectral lines (from 10 K to 300 K), as well of the joint analysis of the Raman spectra and the temperature-resolved absorption and emission spectra a two center model of Yb3+ doping ion is proposed. Namely, most of the ytterbium ions replace yttrium ions in dodecahedral positions (c-site), while a small part replaces yttrium ions in octahedral positions (a-anti-site).

Journal/Review: JOURNAL OF SOLID STATE CHEMISTRY

Volume: 316      Pages from: 123577-1  to: 123577-9

More Information: This work was supported by the joint program between the Ministry of Education and Science of the Republic of Armenia and the National Research Council of Italy (Project Investigation of the spectroscopic and kinetic properties of mixed composition transparent ceramics doped with rare earth ions for laser applications, grant 19IT-005). This work was also supported by the Joint Research Project between Chinese Academy of Sciences and National Research Council of Italy (CAS-CNR) 2020-2022.
KeyWords: Yb:YAG ceramic; Zero-phonon line; Crystallographic sites; Crystal field of point charges theory
DOI: 10.1016/j.jssc.2022.123577

Citations: 5
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