Dependence of the Raman vibration modes on structural properties of Tm:(ScxY1-x)2O3 x Y 1-x )2O3 laser ceramics with 0≤x<1
Year: 2024
Authors: Pirri A., Santonocito A., Maksimov RN., Shitov VA., Becucci M., Patrizi B., Vannini M., Toci G.
Autors Affiliation: IFAC CNR, Consiglio Nazl Ric, Ist Fis Applicata Carrara, Via Madonna Piano 10C, I-50019 Sesto Fiorentino, FI, Italy; Univ Pisa, Dipartimento Chim & Chim Ind, Via Moruzzi 13, I-56124 Pisa, Italy; Ural Fed Univ, Mira St 19, Ekaterinburg 620002, Russia; Inst Electrophys UrB RAS, Amundsen St 106, Ekaterinburg 620016, Russia; Univ Firenze, Dipartimento Chim U Schiff, Via Lastruccia 3-13, I-50019 Sesta Fiorentino, FI, Italy; INO CNR, Ist Nazl Ott, Consiglio Nazl Ric, via Madonna Piano 10B, I-50019 Sesto Fiorentino, FI, Italy.
Abstract: We report on micro-Raman spectra of several mixed laser ceramics, i.e., 5at.%Tm: at.% Tm: (ScxY1-xO2)(3) with x = 0.121, 0.252, 0.489 and 5at.%Tm:Y2O3 ceramic. The samples were fabricated by solid-state pressureless consolidation of nanopowders produced by laser ablation of solid target in airflow. In particular, we studied the influence of Sc3+ content on the active vibration modes in terms of peak positions and shifts, linewidths and shapes: these parameters are relevant for the emission bandwidth of the laser medium. A shift towards higher frequencies is measured with the increase of the Sc3+ content in all samples in particular in (Tm 0.048 Y 0.463 Sc 0.489 O 2 ) 3 where the main Raman peaks are placed at 395, 494, 635 cm(-1) while their shifts with Tm:Y2O3 are 22.6, 25.1, 40.1 cm(-1), respectively. The assignment of the vibrational spectrum was obtained by density functional theory (DFT) with the Perdew-Burke-Enzerhof (PBE) exchange-correlation functional within the harmonic approximation framework. (c) 2024 Optica Publishing Group under the terms of the Optica Open Access Publishing Agreement
Journal/Review: OPTICS EXPRESS
Volume: 32 (14) Pages from: 23932 to: 23944
More Information: Russian Foundation for Basic Research (18-53-7815 Ital_t); Consiglio Nazionale delle Ricerche (SAC.AD002.020.016).KeyWords: High-melting Sesquioxides; Tm; Spectroscopy; Crystal; Growth; Y2o3; 1st-principles; Temperature; Sc2o3; Lu2o3DOI: 10.1364/OE.518356Connecting to view paper tab on IsiWeb: Click here