Optical and EPR spectroscopy of Er3+ in lithium yttrium borate, Li6Y(BO3)3: Er single crystals

L. Kovács, S. Arceiz Casas, G. Corradi, Tichy-Rács, L. Kocsor, K. Lengyel, W. Ryba-Romanowski, A. Strzep, A. Scholle, S. Greulich-Weber

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Abstract

The energy levels of Er3+ ions have been determined in lithium yttrium borate (Li6Y(BO3)3) single crystals in a wide spectral range between 6000 and 40000 cm−1 together with an analysis of the ground state, using optical and EPR spectroscopy. The crystal field splittings of the 4I15/2 ground state and those of nearly all excited states up to the 4D7/2 manifold have been obtained at low temperature from luminescence (T = 5 K) and absorption (T = 9 K) measurements, respectively. The numbers of experimentally observed Stark sublevels agree well with those expected theoretically for Er3+ ions occupying a single low symmetry (C1) site. A full set of g- and 167Er hyperfine tensor parameters are presented for the ground state characterized by EPR; the measured Orbach-type spin-relaxation rates viz. the involved activation energies correspond to the optically derived lowest excited sublevels.

Original languageEnglish
Pages (from-to)270-275
Number of pages6
JournalOptical Materials
Volume72
DOIs
Publication statusPublished - Oct 1 2017

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Keywords

  • Borate
  • EPR
  • Rare-earth
  • Spectroscopy

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Computer Science(all)
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering

Cite this

Kovács, L., Arceiz Casas, S., Corradi, G., Tichy-Rács, Kocsor, L., Lengyel, K., Ryba-Romanowski, W., Strzep, A., Scholle, A., & Greulich-Weber, S. (2017). Optical and EPR spectroscopy of Er3+ in lithium yttrium borate, Li6Y(BO3)3: Er single crystals. Optical Materials, 72, 270-275. https://doi.org/10.1016/j.optmat.2017.06.006