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Study of iron ions irradiation impact on structurephase state of the Fe–Be layered systemтезисы доклада
- Авторы: Ozernoy А.N., Vereshchak M.F., Manakova I.A., Rusakov V.S.
- Сборник: International Conference on the Applications of the Mossbauer Effect ICAME 2015 - Book of Abstracts
- Тезисы
- Год издания: 2015
- Место издания: Hamburg, Germany
- Первая страница: 225
- Последняя страница: 225
- Аннотация: The methods of the Mössbauer spectroscopy on the 57Fe nuclei were used for the study of the structural-phase state of the Be(1 μm)–Fe(10 μm)–Be(1 μm) three-layered system after irradiation with 57Fe ions and subsequent isochronous annealings. The samples for the studies were prepared by the technology of ion-plasma sputtering. The 1 μm thick beryllium was applied on both sides of the 10 μm Armco-iron foil. The subsequent annealing at the temperature of 650°С with the mutual diffusion of the components led to the formation of the thermally stable layered system. The intermetallic compound FeBe2 was formed on both sides in the surface layer of the system. The solid solution of beryllium in α-Fe was formed in the bulk of the system. The samples were irradiated with 350 keV 57Fe ions up to 5⋅1015 ion/сm2 dose using the electrostatic recharging heavy ion accelerator. The impact of the ion beam equaled 10 displacements per atom. The projective range of the iron ions in the material was about 400 nm. After irradiation the samples were subjected to isochronous annealings at the temperatures from 200 to 650°C with the 50°C step. The local environment of the iron atoms after irradiation and isochronous annealing process was determined by the method of conversion electron Mossbauer spectroscopy on the MS-110Em spectrometer at the room temperature. It was established that the effect of the 57Fe ions on Fe-Be layered system as in the case of irradiation with helium and krypton ions [1, 2] leads to disruption of the magnetic order in the zone of the projective range of the ions. Most of the iron atoms from the radiation damage area are in the paramagnetic state. The annealing at 650°C temperature returns the Mössbauer parameters of the irradiated material to the original state. The possible mechanisms responsible for the observed effect are discussed in this work.
- Добавил в систему: Русаков Вячеслав Серафимович