STUDY OF THE ANNEALING OF DEFECTS IN AN IRON-NICKEL ALLOY, BY POST- IRRADIATION DETERMINATION OF THE MAGNETIC ANISOTROPY (in French)
A uniaxial magnetic anisotropy is induced by neutron bombardment with an applied magnetic field in Fe- Ni order-disorder transition. After an irradiation at 30 deg C, the annealing of the defects is studied by means of the magnetic anisotropy increase. In most cases the law DELTA E = a log (bt + 1) is verified very well. This law can be explained by a second-order reaction for the annealing of the defects. After an irradiation at 78 deg K an isochronal annealing indicates that the defects that give rise to an enhancement of the diffusion process begin to move only at 100 deg K. The interstitials do not seem to contribute to the ordering process. (auth) H03 H022328 Samples of cuprous oxide are irradiated with fast neutrons. The modifications of the exciton spectrum observed are similar to those produced by an electric field applied to the crystal. The irradiation probably produces charged defects, which produce an internal electric field. The evaluation of this field allows an evaluation of the concentration of defects produced by the irradiation. (auth)
- Research Organization:
- Centre d'Etudes Nucleaires, Grenoble, France
- NSA Number:
- NSA-18-002327
- OSTI ID:
- 4153974
- Journal Information:
- J. Phys., Journal Name: J. Phys. Journal Issue: 7 Vol. Vol: 24; ISSN 0368-3842
- Country of Publication:
- Country unknown/Code not available
- Language:
- French
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