Structural and optical properties of beta irradiated YAlO3 single crystals

Raman and Photoluminescence Spectroscopic Studies on Structural Disorder in Oxygen Deficient Gd2Ti2O7‐δ Single Crystals

“…Single crystals of Gd2Ti2O7- were grown by optical floating zone technique in Ar atmosphere and the details were discussed elsewhere [20,21] . First, the polycrystalline powders were prepared by standard solid state reaction at 1300 °C with several intermediate grinding using stoichiometric oxides, Gd2O3 and TiO2 of 4N purity.…”

“…Single crystals of Gd 2 Ti 2 O 7-𝛿 were grown by optical floating zone technique in Ar atmosphere and the details were discussed elsewhere. [27,28] First, the polycrystalline powders were prepared by standard solid state reaction at 1300 °C with several intermediate grinding using stoichiometric oxides, Gd 2 O 3 and TiO 2 of 4 N purity. After confirming the phase formation, single crystals were grown in Ar atmosphere at optimized growth parameters using the synthesized polycrystalline materials.…”

Vibrational Spectroscopy of YAlO3

“…[1] While the structural properties of YAP are well-studied and yield consistent results, the vibrational properties of this material fare worse. Although some research by spectroscopic methods has been previously published, which includes Raman spectra of powders, [2] thin films, [3] and crystals, [1,[4][5][6] an overview of it reveals that infrared reflectance spectra have not been measured at all, with only some ab initio results found in the literature; in addition, the published Raman spectra are missing certain vibrational modes predicted by symmetry and ab initio calculations. The most complete Raman experiment to date, as known to the author, was published in 2020 by Dewo et al where polarized Raman spectra of thin film YAP were obtained, alongside density functional theory (DFT) calculations.…”