Investigation of radiation-induced interstitials in RbCaF/sub 3/
Thesis/Dissertation
·
OSTI ID:5554936
Electron spin resonance studies of fluorine interstitials were performed on the perovskite-structured RbCaF/sub 3/. Intrinsic fluorine interstitial (H) centers were induced in this material at 77 K by irradiation with 1.5 MeV electrons from a Van de Graaff accelerator. The ESR spectrometer employed was an X-band homodyne system. Intrinsic and perturbed fluorine interstitials were observed. The intrinsic center was stable below 110 K while the perturbed center started to appear at 110 K and decayed after 150 K. From experimental data taken, defect models for both intrinsic and perturbed centers were determined. It was concluded that both intrinsic and perturbed centers consisted of two fluorines, the intrinsic (H) center being aligned along the (001) unique axis and the perturbed (H/sub A/) center axis making an angle of 11.9/sup 0/ with this (001) direction. Spin Hamiltonian parameters were determined for both centers by rigorous computer diagonalization of the complex Hermitian matrix obtained by the use of an appropriate spin Hamiltonian.
- Research Organization:
- Oklahoma State Univ., Stillwater (USA)
- OSTI ID:
- 5554936
- 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
ALKALINE EARTH METAL COMPOUNDS
BEAMS
CALCIUM COMPOUNDS
CALCIUM FLUORIDES
CALCIUM HALIDES
CHEMICAL RADIATION EFFECTS
CHEMISTRY
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTRON BEAMS
ELECTRON SPIN RESONANCE
ENERGY RANGE
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INTERSTITIALS
LEPTON BEAMS
MAGNETIC RESONANCE
MEV RANGE
MEV RANGE 01-10
PARTICLE BEAMS
POINT DEFECTS
RADIATION CHEMISTRY
RADIATION EFFECTS
RESONANCE
RUBIDIUM COMPOUNDS
RUBIDIUM FLUORIDES
400600* -- Radiation Chemistry
ALKALI METAL COMPOUNDS
ALKALINE EARTH METAL COMPOUNDS
BEAMS
CALCIUM COMPOUNDS
CALCIUM FLUORIDES
CALCIUM HALIDES
CHEMICAL RADIATION EFFECTS
CHEMISTRY
CRYSTAL DEFECTS
CRYSTAL STRUCTURE
ELECTRON BEAMS
ELECTRON SPIN RESONANCE
ENERGY RANGE
FLUORIDES
FLUORINE COMPOUNDS
HALIDES
HALOGEN COMPOUNDS
INTERSTITIALS
LEPTON BEAMS
MAGNETIC RESONANCE
MEV RANGE
MEV RANGE 01-10
PARTICLE BEAMS
POINT DEFECTS
RADIATION CHEMISTRY
RADIATION EFFECTS
RESONANCE
RUBIDIUM COMPOUNDS
RUBIDIUM FLUORIDES