Electro paramagnetic resonance and optical spectra of Ti3+-doped YAlO3

M. Yamaga, T. Yosida, B. Henderson, K. P. O'Donnell, M. Date

Research output: Contribution to journalArticle

36 Citations (Scopus)

Abstract

The electron paramagnetic resonance (EPR), optical absorption and luminescence spectra of Ti3+ ions in YAlO3 have been measured at low temperatures. The optical absorption spectrum is composed of two broad bands with peak wavelengths of 434 and 492 nm, the energy separation of which is due to splitting of the excited 2E state. The broad-band luminescence with a peak at a wavelength of 605 nm at low temperatures is accompanied by a single sharp zero-phonon line at 540 nm. The absorption and luminescence spectra are strongly polarized. The spin-Hamiltonian parameters of Ti3+ ions substituting for Al3+ ions in sites with orthorhombic symmetry were determined from the orientation dependence of the EPR spectra to be gx=1.795(5), gy=1.850(5) and g z=1.950(5). The experimental g-tensor is compared with that calculated in terms of the mixing of the higher components of the 2T2 ground states and the 2E excited states into the lowest 2T2 ground state by spin-orbit interaction, the energies of these levels having been estimated from the broad-band absorption spectrum and the zero-phonon lines of the emission spectrum.

Original languageEnglish
Article number011
Pages (from-to)7285-7294
Number of pages10
JournalJournal of Physics: Condensed Matter
Volume4
Issue number35
DOIs
Publication statusPublished - 1 Dec 1992

Fingerprint

paramagnetic resonance
Paramagnetic resonance
optical spectrum
Luminescence
Ions
absorption spectra
Excited states
Light absorption
Ground state
Absorption spectra
luminescence
broadband
Hamiltonians
Wavelength
electron paramagnetic resonance
optical absorption
ions
Tensors
ground state
Orbits

Keywords

  • electron paramagnetic resonance
  • luminescence spectra
  • broad-band luminescence

Cite this

Yamaga, M. ; Yosida, T. ; Henderson, B. ; O'Donnell, K. P. ; Date, M. / Electro paramagnetic resonance and optical spectra of Ti3+-doped YAlO3. In: Journal of Physics: Condensed Matter . 1992 ; Vol. 4, No. 35. pp. 7285-7294.
@article{ebd84625cc984ba8886e86c0d7ebcd94,
title = "Electro paramagnetic resonance and optical spectra of Ti3+-doped YAlO3",
abstract = "The electron paramagnetic resonance (EPR), optical absorption and luminescence spectra of Ti3+ ions in YAlO3 have been measured at low temperatures. The optical absorption spectrum is composed of two broad bands with peak wavelengths of 434 and 492 nm, the energy separation of which is due to splitting of the excited 2E state. The broad-band luminescence with a peak at a wavelength of 605 nm at low temperatures is accompanied by a single sharp zero-phonon line at 540 nm. The absorption and luminescence spectra are strongly polarized. The spin-Hamiltonian parameters of Ti3+ ions substituting for Al3+ ions in sites with orthorhombic symmetry were determined from the orientation dependence of the EPR spectra to be gx=1.795(5), gy=1.850(5) and g z=1.950(5). The experimental g-tensor is compared with that calculated in terms of the mixing of the higher components of the 2T2 ground states and the 2E excited states into the lowest 2T2 ground state by spin-orbit interaction, the energies of these levels having been estimated from the broad-band absorption spectrum and the zero-phonon lines of the emission spectrum.",
keywords = "electron paramagnetic resonance, luminescence spectra, broad-band luminescence",
author = "M. Yamaga and T. Yosida and B. Henderson and O'Donnell, {K. P.} and M. Date",
year = "1992",
month = "12",
day = "1",
doi = "10.1088/0953-8984/4/35/011",
language = "English",
volume = "4",
pages = "7285--7294",
journal = "Journal of Physics: Condensed Matter",
issn = "0953-8984",
number = "35",

}

Electro paramagnetic resonance and optical spectra of Ti3+-doped YAlO3. / Yamaga, M.; Yosida, T.; Henderson, B.; O'Donnell, K. P.; Date, M.

In: Journal of Physics: Condensed Matter , Vol. 4, No. 35, 011, 01.12.1992, p. 7285-7294.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Electro paramagnetic resonance and optical spectra of Ti3+-doped YAlO3

AU - Yamaga, M.

AU - Yosida, T.

AU - Henderson, B.

AU - O'Donnell, K. P.

AU - Date, M.

PY - 1992/12/1

Y1 - 1992/12/1

N2 - The electron paramagnetic resonance (EPR), optical absorption and luminescence spectra of Ti3+ ions in YAlO3 have been measured at low temperatures. The optical absorption spectrum is composed of two broad bands with peak wavelengths of 434 and 492 nm, the energy separation of which is due to splitting of the excited 2E state. The broad-band luminescence with a peak at a wavelength of 605 nm at low temperatures is accompanied by a single sharp zero-phonon line at 540 nm. The absorption and luminescence spectra are strongly polarized. The spin-Hamiltonian parameters of Ti3+ ions substituting for Al3+ ions in sites with orthorhombic symmetry were determined from the orientation dependence of the EPR spectra to be gx=1.795(5), gy=1.850(5) and g z=1.950(5). The experimental g-tensor is compared with that calculated in terms of the mixing of the higher components of the 2T2 ground states and the 2E excited states into the lowest 2T2 ground state by spin-orbit interaction, the energies of these levels having been estimated from the broad-band absorption spectrum and the zero-phonon lines of the emission spectrum.

AB - The electron paramagnetic resonance (EPR), optical absorption and luminescence spectra of Ti3+ ions in YAlO3 have been measured at low temperatures. The optical absorption spectrum is composed of two broad bands with peak wavelengths of 434 and 492 nm, the energy separation of which is due to splitting of the excited 2E state. The broad-band luminescence with a peak at a wavelength of 605 nm at low temperatures is accompanied by a single sharp zero-phonon line at 540 nm. The absorption and luminescence spectra are strongly polarized. The spin-Hamiltonian parameters of Ti3+ ions substituting for Al3+ ions in sites with orthorhombic symmetry were determined from the orientation dependence of the EPR spectra to be gx=1.795(5), gy=1.850(5) and g z=1.950(5). The experimental g-tensor is compared with that calculated in terms of the mixing of the higher components of the 2T2 ground states and the 2E excited states into the lowest 2T2 ground state by spin-orbit interaction, the energies of these levels having been estimated from the broad-band absorption spectrum and the zero-phonon lines of the emission spectrum.

KW - electron paramagnetic resonance

KW - luminescence spectra

KW - broad-band luminescence

UR - http://www.scopus.com/inward/record.url?scp=0000376059&partnerID=8YFLogxK

U2 - 10.1088/0953-8984/4/35/011

DO - 10.1088/0953-8984/4/35/011

M3 - Article

VL - 4

SP - 7285

EP - 7294

JO - Journal of Physics: Condensed Matter

JF - Journal of Physics: Condensed Matter

SN - 0953-8984

IS - 35

M1 - 011

ER -