Polarized laser selective excitation and electron paramagnetic resonance of Er3+ centers in SrLaAlO4 crystals

J.-P.R. Wells, M. Yamaga, R.W. Mosses, T.P.J. Han, H.G. Gallagher, T. Yosida

Research output: Contribution to journalArticle

8 Citations (Scopus)

Abstract

The crystal growth and optical and magnetic spectroscopies of perovskite phase, strontium lanthanium aluminate (SrLaAlO4) doped with trivalent erbium are reported. Electron paramagnetic resonance of SrLaAlO4:1%Er3+ identifies two distinct Er3+ ion centers in this material: a tetragonal (C4v) symmetry center with spin Hamiltonian parameters of g=2.70.05 and g=8.50.05 and a minor center of orthorhombic symmetry having gx=9.40.05, gy=6.80.05, and gz=2.30.05. From a combination of optical absorption and polarized laser selective excitation, a total of 40 energy levels and their irreducible representation symmetry labels have been determined for the C4v symmetry center, while 22 energy levels have been determined for a minor center. A C4v symmetry, crystal-field parametrization for the dominant center yields optimized parameters consistent with proposed structural models. The g tensors of the ground-state Kramers doublets, calculated from the C4v center wave functions, are in good agreement with the measured g values.
LanguageEnglish
Pages3905-3914
Number of pages10
JournalPhysical Review B (Condensed Matter)
Volume61
Issue number6
DOIs
Publication statusPublished - 1 Feb 2000

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Crystal symmetry
Paramagnetic resonance
electron paramagnetic resonance
Electron energy levels
Crystals
Lasers
Erbium
excitation
crystals
lasers
Hamiltonians
Strontium
symmetry
Wave functions
Crystallization
Crystal growth
Perovskite
Light absorption
Ground state
Tensors

Keywords

  • crystal field interactions
  • crystal growth from melt
  • erbium
  • impurity absorption spectra
  • impurity states
  • paramagnetic resonance
  • strontium compounds
  • wave functions

Cite this

Wells, J.-P.R. ; Yamaga, M. ; Mosses, R.W. ; Han, T.P.J. ; Gallagher, H.G. ; Yosida, T. / Polarized laser selective excitation and electron paramagnetic resonance of Er3+ centers in SrLaAlO4 crystals. In: Physical Review B (Condensed Matter). 2000 ; Vol. 61, No. 6. pp. 3905-3914.
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title = "Polarized laser selective excitation and electron paramagnetic resonance of Er3+ centers in SrLaAlO4 crystals",
abstract = "The crystal growth and optical and magnetic spectroscopies of perovskite phase, strontium lanthanium aluminate (SrLaAlO4) doped with trivalent erbium are reported. Electron paramagnetic resonance of SrLaAlO4:1{\%}Er3+ identifies two distinct Er3+ ion centers in this material: a tetragonal (C4v) symmetry center with spin Hamiltonian parameters of g=2.70.05 and g=8.50.05 and a minor center of orthorhombic symmetry having gx=9.40.05, gy=6.80.05, and gz=2.30.05. From a combination of optical absorption and polarized laser selective excitation, a total of 40 energy levels and their irreducible representation symmetry labels have been determined for the C4v symmetry center, while 22 energy levels have been determined for a minor center. A C4v symmetry, crystal-field parametrization for the dominant center yields optimized parameters consistent with proposed structural models. The g tensors of the ground-state Kramers doublets, calculated from the C4v center wave functions, are in good agreement with the measured g values.",
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Polarized laser selective excitation and electron paramagnetic resonance of Er3+ centers in SrLaAlO4 crystals. / Wells, J.-P.R.; Yamaga, M.; Mosses, R.W.; Han, T.P.J.; Gallagher, H.G.; Yosida, T.

In: Physical Review B (Condensed Matter), Vol. 61, No. 6, 01.02.2000, p. 3905-3914.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Polarized laser selective excitation and electron paramagnetic resonance of Er3+ centers in SrLaAlO4 crystals

AU - Wells, J.-P.R.

AU - Yamaga, M.

AU - Mosses, R.W.

AU - Han, T.P.J.

AU - Gallagher, H.G.

AU - Yosida, T.

PY - 2000/2/1

Y1 - 2000/2/1

N2 - The crystal growth and optical and magnetic spectroscopies of perovskite phase, strontium lanthanium aluminate (SrLaAlO4) doped with trivalent erbium are reported. Electron paramagnetic resonance of SrLaAlO4:1%Er3+ identifies two distinct Er3+ ion centers in this material: a tetragonal (C4v) symmetry center with spin Hamiltonian parameters of g=2.70.05 and g=8.50.05 and a minor center of orthorhombic symmetry having gx=9.40.05, gy=6.80.05, and gz=2.30.05. From a combination of optical absorption and polarized laser selective excitation, a total of 40 energy levels and their irreducible representation symmetry labels have been determined for the C4v symmetry center, while 22 energy levels have been determined for a minor center. A C4v symmetry, crystal-field parametrization for the dominant center yields optimized parameters consistent with proposed structural models. The g tensors of the ground-state Kramers doublets, calculated from the C4v center wave functions, are in good agreement with the measured g values.

AB - The crystal growth and optical and magnetic spectroscopies of perovskite phase, strontium lanthanium aluminate (SrLaAlO4) doped with trivalent erbium are reported. Electron paramagnetic resonance of SrLaAlO4:1%Er3+ identifies two distinct Er3+ ion centers in this material: a tetragonal (C4v) symmetry center with spin Hamiltonian parameters of g=2.70.05 and g=8.50.05 and a minor center of orthorhombic symmetry having gx=9.40.05, gy=6.80.05, and gz=2.30.05. From a combination of optical absorption and polarized laser selective excitation, a total of 40 energy levels and their irreducible representation symmetry labels have been determined for the C4v symmetry center, while 22 energy levels have been determined for a minor center. A C4v symmetry, crystal-field parametrization for the dominant center yields optimized parameters consistent with proposed structural models. The g tensors of the ground-state Kramers doublets, calculated from the C4v center wave functions, are in good agreement with the measured g values.

KW - crystal field interactions

KW - crystal growth from melt

KW - erbium

KW - impurity absorption spectra

KW - impurity states

KW - paramagnetic resonance

KW - strontium compounds

KW - wave functions

U2 - 10.1103/PhysRevB.61.3905

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