Electron paramagnetic resonance and optical properties of Cr3+ doped YAl3(BO3)4

Jon-Paul R Wells, Mitsuo Yamaga, Thomas P J Han, Makoto Honda

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We report on the electron paramagnetic resonance (EPR) and optical absorption and fluorescence spectroscopy of YAl3(BO3)4 single crystals doped with 0.2 mol% of trivalent chromium. From EPR we determine that the Cr3+ ions reside in sites of essentially octahedral symmetry with an orthorhombic distortion. The ground state 4A2 splitting is determined to be 2(D2 + 3E2) 1.05 0.04 cm-1, where D and E are fine-structure parameters, and we can attribute this splitting to the combined effect of a low-symmetry distortion and spin-orbit coupling. The g-values and fine-structure parameters D and E of the ground state 4A2 are measured to be gx gy gz = 1.978 0.005, |D| = 0.52 0.02 cm-1 and |E| = 0.010 0.005 cm-1 respectively. From 10 K optical absorption we have measured the position and crystal-field splittings of the 2E, 2T1, 4T2, 2T2 and 4T1 states with the 4T2 and 4T1 levels appearing as vibronically broadened bands.
LanguageEnglish
Pages539-547
Number of pages9
JournalJournal of Physics: Condensed Matter
Volume15
Issue number3
Early online date13 Jan 2003
DOIs
Publication statusPublished - 29 Jan 2003

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Light absorption
Ground state
Paramagnetic resonance
electron paramagnetic resonance
optical absorption
Optical properties
fine structure
optical properties
ground state
Fluorescence spectroscopy
Crystal symmetry
symmetry
Chromium
Absorption spectroscopy
crystal field theory
chromium
absorption spectroscopy
Orbits
Single crystals
Ions

Keywords

  • electron paramagnetic resonance
  • optical absorption
  • fluorescence spectroscopy
  • crystals
  • nanoscience

Cite this

Wells, Jon-Paul R ; Yamaga, Mitsuo ; Han, Thomas P J ; Honda, Makoto. / Electron paramagnetic resonance and optical properties of Cr3+ doped YAl3(BO3)4. In: Journal of Physics: Condensed Matter. 2003 ; Vol. 15, No. 3. pp. 539-547.
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abstract = "We report on the electron paramagnetic resonance (EPR) and optical absorption and fluorescence spectroscopy of YAl3(BO3)4 single crystals doped with 0.2 mol{\%} of trivalent chromium. From EPR we determine that the Cr3+ ions reside in sites of essentially octahedral symmetry with an orthorhombic distortion. The ground state 4A2 splitting is determined to be 2(D2 + 3E2) 1.05 0.04 cm-1, where D and E are fine-structure parameters, and we can attribute this splitting to the combined effect of a low-symmetry distortion and spin-orbit coupling. The g-values and fine-structure parameters D and E of the ground state 4A2 are measured to be gx gy gz = 1.978 0.005, |D| = 0.52 0.02 cm-1 and |E| = 0.010 0.005 cm-1 respectively. From 10 K optical absorption we have measured the position and crystal-field splittings of the 2E, 2T1, 4T2, 2T2 and 4T1 states with the 4T2 and 4T1 levels appearing as vibronically broadened bands.",
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Electron paramagnetic resonance and optical properties of Cr3+ doped YAl3(BO3)4. / Wells, Jon-Paul R; Yamaga, Mitsuo; Han, Thomas P J; Honda, Makoto.

In: Journal of Physics: Condensed Matter, Vol. 15, No. 3, 29.01.2003, p. 539-547.

Research output: Contribution to journalArticle

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T1 - Electron paramagnetic resonance and optical properties of Cr3+ doped YAl3(BO3)4

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AU - Yamaga, Mitsuo

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AU - Honda, Makoto

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N2 - We report on the electron paramagnetic resonance (EPR) and optical absorption and fluorescence spectroscopy of YAl3(BO3)4 single crystals doped with 0.2 mol% of trivalent chromium. From EPR we determine that the Cr3+ ions reside in sites of essentially octahedral symmetry with an orthorhombic distortion. The ground state 4A2 splitting is determined to be 2(D2 + 3E2) 1.05 0.04 cm-1, where D and E are fine-structure parameters, and we can attribute this splitting to the combined effect of a low-symmetry distortion and spin-orbit coupling. The g-values and fine-structure parameters D and E of the ground state 4A2 are measured to be gx gy gz = 1.978 0.005, |D| = 0.52 0.02 cm-1 and |E| = 0.010 0.005 cm-1 respectively. From 10 K optical absorption we have measured the position and crystal-field splittings of the 2E, 2T1, 4T2, 2T2 and 4T1 states with the 4T2 and 4T1 levels appearing as vibronically broadened bands.

AB - We report on the electron paramagnetic resonance (EPR) and optical absorption and fluorescence spectroscopy of YAl3(BO3)4 single crystals doped with 0.2 mol% of trivalent chromium. From EPR we determine that the Cr3+ ions reside in sites of essentially octahedral symmetry with an orthorhombic distortion. The ground state 4A2 splitting is determined to be 2(D2 + 3E2) 1.05 0.04 cm-1, where D and E are fine-structure parameters, and we can attribute this splitting to the combined effect of a low-symmetry distortion and spin-orbit coupling. The g-values and fine-structure parameters D and E of the ground state 4A2 are measured to be gx gy gz = 1.978 0.005, |D| = 0.52 0.02 cm-1 and |E| = 0.010 0.005 cm-1 respectively. From 10 K optical absorption we have measured the position and crystal-field splittings of the 2E, 2T1, 4T2, 2T2 and 4T1 states with the 4T2 and 4T1 levels appearing as vibronically broadened bands.

KW - electron paramagnetic resonance

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