Impurity centers and defects

Raman and photoluminescence spectra for Yb and Lu doped the strontium zirconate SrZrO$_3$

S. N. Shkerin^a, A. V. Pavlovich^a, R. K. Abdurakhimova^a, T. V. Yaroslavtseva^b, E. S. Ulyanova<sup>b

a</sup> Institute of High-Temperature Electrochemistry, RAS, Yekaterinburg, Russia
^b Institute of Solid State Chemistry, Urals Branch of the Russian Academy of Sciences, Yekaterinburg, Russia

Abstract: Raman spectra equipment with different wavelengths (532 and 785 nm) was used for investigation of derivatives based on strontium zirconate. A number of reflexes independent of the laser wavelength are identified as the structure related. Sr–O vibration observed at 93 cm$^{-1}$ is previously discussed in detail in the literature and it is generally accepted that it realizes at the smallest wave numbers. The presence of the 59 cm$^{-1}$ structure band is shown at first time. It is interpreted as manifestation of vibration of a heavy cation in the strontium position (LuSr)–O. Reflexes that depend on the laser wavelength are considered as related to luminescence. It was evidenced an oxygen vacancies self-manifestation by luminescence using the dependence of line intensity on material composition. It was first time observed for materials with perovskite structure in this study.

Keywords: perovskite structure, SrZrO$_3$, Raman spectroscopy, pointe defects associates luminescence.

Received: 31.01.2024
Revised: 31.01.2024
Accepted: 05.02.2024

DOI: 10.61011/FTT.2024.03.57483.12

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