Skip to main content
OSTI.GOVU.S. Department of Energy Office of Scientific and Technical Information
U.S. Department of Energy
Office of Scientific and Technical Information
 

Color-Center Production and Formation in Electron-Irradiated Magnesium Aluminate Spinel and Ceria

Journal Article · · Journal of Physics. Condensed Matter
 [1];  [2];  [2];  [3];  [4];  [4]
  1. French Atomic Energy Commission (CEA), Gif sur Yvette (France)
  2. Sorbonne Univ. (France)
  3. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
  4. Kyushu Univ. (Japan)
+ Show Author Affiliations
Single crystals of magnesium aluminate spinel (MgAl2O4) with (100) or (110) orientations and cerium dioxide or ceria (CeO2) were irradiated by 1.0-MeV and 2.5-MeV electrons in a high fluence range. Point-defect production was studied by off-line UV-visible optical spectroscopy after irradiation. For spinel, regardless of both crystal orientation and electron energy, two characteristic broad bands centered at photon energies of 5.4 eV and 4.9 eV were assigned to F and F+ centers (neutral and singly-ionized oxygen vacancies), respectively, on the basis of available literature data. No clear differences in colour-centre formation were observed for the two crystal orientations. Using calculations of displacement cross sections by elastic collisions, these results are consistent with a very large threshold displacement energy (200 eV) for oxygen atoms at RT. A third very broad band centered at 3.7 eV might be attributed either to an oxygen hole center (V-type center) or an F2 dimer center (oxygen di-vacancy). The onset of recovery of these color centers took place at 200°C with almost full bleaching at 600°C. Activation energies (~0.3-0.4 eV) for defect recovery were deduced from the isochronal annealing data by using a first-order kinetics analysis. For ceria, a sub band-gap absorption feature peaked at ~3.1 eV was recorded for 2.5-MeV electron irradiation only. Assuming a ballistic process, we suggest that the latter defect might result from cerium atom displacement on the basis of computed cross sections.
Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC)
Grant/Contract Number:
AC05-00OR22725
OSTI ID:
1261387
Alternate ID(s):
OSTI ID: 22681116
Journal Information:
Journal of Physics. Condensed Matter, Journal Name: Journal of Physics. Condensed Matter Journal Issue: 32 Vol. 28; ISSN 0953-8984
Publisher:
IOP PublishingCopyright Statement
Country of Publication:
United States
Language:
English

References (36)

Optical Properties of Pure CeO2 and Mixed CeO2/SnO2 Thin Film Coatings journal November 1994
Color Centers in Simple Oxides book January 1972
Characteristics of microstructural evolution of radiation damage in ceramics under fusion environment journal March 1991
Cation disorder in high dose, neutron-irradiated spinel journal March 1995
Why is magnesia spinel a radiation-resistant material? journal March 1995
Thermal stability and kinetics of defects in magnesium aluminate spinel irradiated with fast neutrons journal December 2000
Order–disorder phase transition induced by swift ions in MgAl2O4 and ZnAl2O4 spinels journal February 2002
Radiation-induced defect clusters in fully stabilized zirconia irradiated with ions and/or electrons journal June 2003
Optical and dielectric properties of neutron irradiated MgAl2O4 spinels journal October 1996
Defect production in ceramics journal November 1997
Electron-beam induced dissociation of dislocation loops in magnesia–alumina ceramics journal May 2002
Computer simulation of displacement energies for several ceramic materials journal May 1998
Radiation-induced point defects in simple oxides journal May 1998
Production and stability of dislocation loops in an MgO–Al2O3 system under concurrent irradiation with ions and electrons journal May 2000
Heavy ion induced damage in MgAl2O4, an inert matrix candidate for the transmutation of minor actinides journal June 1999
Radiation damage in cubic-stabilized zirconia journal September 2013
Nucleation and growth of defect clusters in CeO2 irradiated with electrons
  • Yasunaga, K.; Yasuda, K.; Matsumura, S.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 250, Issue 1-2 https://doi.org/10.1016/j.nimb.2006.04.091
journal September 2006
Production and stability of radiation-induced defects in MgAl2O4 under electronic excitation journal June 2008
Electron energy-dependent formation of dislocation loops in CeO2
  • Yasunaga, K.; Yasuda, K.; Matsumura, S.
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 266, Issue 12-13 https://doi.org/10.1016/j.nimb.2008.03.204
journal June 2008
Atomistic simulation of point defects behavior in ceria
  • Guglielmetti, Aurore; Chartier, Alain; Brutzel, Laurent van
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 266, Issue 24 https://doi.org/10.1016/j.nimb.2008.09.010
journal December 2008
Molecular dynamics simulations of oxygen Frenkel pairs in cerium dioxide
  • Shiiyama, Kenichi; Yamamoto, Tomokazu; Takahashi, Tatsuro
  • Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms, Vol. 268, Issue 19 https://doi.org/10.1016/j.nimb.2010.05.022
journal October 2010
Atomic structure of ion tracks in Ceria journal May 2014
Self‐diffusion coefficients of oxygen ion in single crystals of MgO · n Al 2 O 3 spinels journal July 1974
A spectroscopic ellipsometry study of cerium dioxide thin films grown on sapphire by rf magnetron sputtering journal May 1995
Paramagnetic defects in electron-irradiated yttria-stabilized zirconia: Effect of yttria content journal December 2011
Annealing of paramagnetic centres in electron- and ion-irradiated yttria-stabilized zirconia: effect of yttria content journal May 2014
Colour centre production in yttria-stabilized zirconia by X-ray and electron irradiations: effect of yttria content journal November 2014
Colour centres in electron irradiated mgo journal December 1970
F-centre luminescence in nanocrystalline CeO 2 journal November 2013
Electronic structure of spinel oxides: zinc aluminate and zinc gallate journal January 1999
Dynamical simulations of radiation damage in magnesium aluminate spinel, MgAl 2 O 4 journal January 2005
Radiation damage in Mg Al 2 O 4 journal March 1980
V centers in MgAl 2 O 4 spinels journal October 1991
Optical Absorption Microspectroscopy (μ-OAS) Based on Schwarzschild-Type Cassegrain Optics journal April 2015
Atomistic observation of electron irradiation-induced defects in CeO 2 journal January 2013
Accumulation of radiation damage and disordering in MgAl 2 O 4 under swift heavy ion irradiation: Dedicated to Prof. Dr.-Ing. Heinrich Wollenberger on the occasion of his 80 th birthday journal September 2011

Cited By (3)

First Principles Simulations on Migration Paths of Oxygen Interstitials in MgAl 2 O 4 journal October 2018
Defects induced in cerium dioxide single crystals by electron irradiation journal January 2018
Optical spectroscopy study of modifications induced in cerium dioxide by electron and ion irradiations journal April 2019

Similar Records

Paramagnetic defects in electron-irradiated yttria-stabilized zirconia: Effect of yttria content
Journal Article · Mon Dec 19 23:00:00 EST 2011 · Journal of Applied Physics, 110(12):Article No. 123506 · OSTI ID:1033831
Electron irradiation effects on the optical properties of Hf- and Zn-doped β-Ga2O3
Journal Article · Tue May 07 20:00:00 EDT 2024 · Journal of Applied Physics · OSTI ID:2476682
Structure and electronic states of defects in spinel of different compositions MgO{center{underscore}dot}nAl{sub 2}O{sub 3}:Me
Journal Article · Tue Nov 30 23:00:00 EST 1999 · Journal of the American Ceramic Society · OSTI ID:20005961

Related Subjects

36 MATERIALS SCIENCE
Ceria
Color Centers
Electron-Irradiation
Spinel