EPR studies on an ''unperturbed'' CrO/sub 4//sup 3 -/ center in K/sub 2/SO/sub 4/ crystals
Journal Article
·
· J. Chem. Phys.; (United States)
OSTI ID:6221048
Electron paramagnetic resonance of CrO/sup 2 -//sub 4/ doped K/sub 2/SO crystals has been studied after x-irradiation at 77 K. The resulting species, a CrO/sub 4//sup 3 -/ center, has the principal g values g/sub x/ = 1.8743, g/sub y/ = 1.8507, and g/sub z/ = 1.9386. The EPR data indicate a small distortion of CrO/sub 4//sup 3 -/ tetrahedra. A temperature variation study of the spectra in the range 1.6--77 K shows that they broaden rapidly above 10 K and no motionally averaged spectrum is observed. The experimental results are discussed in terms of several effects including a possible Jahn--Teller effect.
- Research Organization:
- Groupe de Physico-Chimie du Solide, Universite de Geneve, 30, Quai E. Ansermet, 1211 Geneva 4, Switzerland
- OSTI ID:
- 6221048
- Journal Information:
- J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 82:2; ISSN JCPSA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400600* -- Radiation Chemistry
ALKALI METAL COMPOUNDS
ANIONS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
DECOMPOSITION
DOPED MATERIALS
ELECTROMAGNETIC RADIATION
ELECTRON SPIN RESONANCE
ELECTRONIC STRUCTURE
IONIZING RADIATIONS
IONS
MAGNETIC RESONANCE
MATERIALS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM SULFATES
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADIOLYSIS
RESONANCE
SULFATES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
X RADIATION
400600* -- Radiation Chemistry
ALKALI METAL COMPOUNDS
ANIONS
CHALCOGENIDES
CHARGED PARTICLES
CHEMICAL RADIATION EFFECTS
CHEMICAL REACTIONS
CHEMISTRY
CHROMIUM COMPOUNDS
CHROMIUM OXIDES
DECOMPOSITION
DOPED MATERIALS
ELECTROMAGNETIC RADIATION
ELECTRON SPIN RESONANCE
ELECTRONIC STRUCTURE
IONIZING RADIATIONS
IONS
MAGNETIC RESONANCE
MATERIALS
OXIDES
OXYGEN COMPOUNDS
POTASSIUM COMPOUNDS
POTASSIUM SULFATES
RADIATION CHEMISTRY
RADIATION EFFECTS
RADIATIONS
RADIOLYSIS
RESONANCE
SULFATES
SULFUR COMPOUNDS
TRANSITION ELEMENT COMPOUNDS
X RADIATION