Optical and magnetic spectroscopy of rare-earth-doped yttrium aluminium borate (YAl3(BO3)4) single crystals

A. Watterich, P. Aleshkevych, M. T. Borowiec, T. Zayarnyuk, H. Szymczak, E. Beregi, L. Kovács

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

For Ce3+, Er3+ and Yb3+ ions, electron paramagnetic resonance (EPR) spectra typical for S′ = 1/2 ions are measured for YAl3(BO3)4 (YAB) single crystal. The spectra show axial symmetry indicating that all three dopants replace Y3+ at the given dopant concentration. Corresponding g̃- and hyperfine Ã-tensors are determined. The EPR linewidth of Ce broadens with increasing temperature due to an Orbach relaxation process. Fitting the curve with an exponential, the energy difference is found to be equal to 270 ± 16 cm-1. The optical absorption and excitation spectra of Ce in YAB single crystal measured at 300 K are similar to those found for polycrystalline materials. High-resolution polarized emission from the lowest excited to the 2F5/2 ground state, measured at 4.2 K, indicates a splitting of the ground state into three levels. The second level is located 277 ± 18 cm-1 above the first one, in excellent agreement with the EPR result, and the third level is located 140 ± 10 cm-1 above the second one.

Original languageEnglish
Pages (from-to)3323-3331
Number of pages9
JournalJournal of Physics Condensed Matter
Volume15
Issue number19
DOIs
Publication statusPublished - May 21 2003

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics

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