Study of radiation-induced processes in a layered Be-Fe-Be system subjected to ion irradiation and subsequent isochronous annealings

Ozernoy, A. N.; Vereshchak, M. F.; Manakova, I. A.; Кадыржанов, К. К.; Rusakov, V. S.

doi:10.1134/s0031918x14080122

Cited by 3 publications

(3 citation statements)

References 13 publications

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“…Thus, in [ 34 ], during the study of a layered Be–Fe–Be system, it was established that irradiation with He ions resulted in the transition of some Fe atoms from a magnetically ordered to a paramagnetic state (the effect of radiation-induced segregation in the zone of primary knocked-out atoms). Such processes were also observed in [ 35 ], and similar results were obtained in [ 28 ].…”

Section: Introductionsupporting

confidence: 88%

“…Diffusion migration of atomic planes from crystal to crystal is reflected in Doublet 1; crystallization of the void, along the periphery of which the knocked-out atoms are located, is reflected in Doublet 2. These mechanisms were previously used to explain the segregation of atoms in displacement cascades in the zone of primary knocked-out atoms [ 28 , 34 , 35 ]. In the zone of primary knocked-out atoms, strongly heated regions are formed (thermal peaks), which can be compared with atomic plasma.…”

Section: Resultsmentioning

confidence: 99%

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Mössbauer and X-ray Studies of Radiation-Induced Processes in Nb–Zr Alloys Implanted with 57Fe Ions

2023

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The effect of implanting 57Fe ions on the crystal structure of Nb–Zr alloys has been studied using Mössbauer spectroscopy on 57Fe nuclei and X-ray diffraction. As a result of implantation, a metastable structure was formed in the Nb–Zr alloy. The XRD data indicated a decrease in the crystal lattice parameter of niobium; that is, there was a compression of the niobium planes when implanted with iron ions. Mössbauer spectroscopy revealed three states of iron. The singlet indicated a supersaturated Nb(Fe) solid solution; the doublets characterized the diffusion migration of atomic planes and crystallization of voids. It was shown that the values of the isomer shifts in all three states did not depend on the implantation energy, which indicates the invariance of the electron density on the 57Fe nuclei in the studied samples. The resonance lines of the Mössbauer spectra were significantly broadened, which is typical for materials with low crystallinity and a metastable structure that is stable at room temperature. The paper discusses the mechanism of radiation-induced and thermal transformations in the Nb–Zr alloy, which leads to the formation of a stable well-crystallized structure. A Fe2Nb intermetallic compound and the Nb(Fe) solid solution formed in its near-surface layer, while Nb(Zr) remained in the bulk.

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Section: Introductionsupporting

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Mössbauer and X-ray Studies of Radiation-Induced Processes in Nb–Zr Alloys Implanted with 57Fe Ions

2023

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“…Apart from amorphous materials, the influence of ion irradiation is studied also upon crystalline materials. As an example, we mention the recent reports of Be-Fe-Be threelayer alloy irradiated with 40 keV helium ions up to doses of 1 × 10 17 , 1 × 10 18 , and 2 × 10 18 ions/cm 2 [11,12] that is foreseen for production of a primary wall for fusion reactors.…”

Section: Introductionmentioning

confidence: 99%

Impact of Ion Irradiation upon Structure and Magnetic Properties of NANOPERM‐Type Amorphous and Nanocrystalline Alloys

Miglierini

Hasiak

2015

Journal of Nanomaterials

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Structural modifications and their impact upon magnetic properties are studied in amorphous and nanocrystalline NANOPERM-type57Fe75Mo8Cu1B16alloy. They are introduced by irradiation with 130 keV N+ions to the total fluencies of up to 2.5 × 1017 ions/cm2under different cooling conditions. Increased temperature during the irradiation triggers formation of nanocrystallites of bcc-Fe in those subsurface regions that are affected by bombarding ions. No crystallization occurs when good thermal contact between the irradiated sample and a sample holder is assured. Instead, structural rearrangement which favours development of magnetically active regions was determined by the local probe methods of Mössbauer spectrometry. Dipole magnetic interactions dominate in subsurface regions on that side of the ribbons which was exposed to ion irradiation. Nevertheless, structural modifications demonstrate themselves also via macroscopic magnetic parameters such as temperature dependence of magnetization, Curie temperature, and hysteresis loops. Impact of only the temperature itself to the observed effects is assessed by the help of samples that were subjected just to heat treatment, that is, without ion irradiation.

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MOSSBAUER STUDIES OF 12Cr18Ni10Ti STEEL SAMPLES EXPOSED TO RADIATION WITH 57Fe IONS

Bedelbekova,

Ozernoy,

Degtyaryova

et al. 2019

jour

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The phase-structural transformations were studied by the X-ray diffraction analysis, scanning electron microscopy and Mössbauer spectroscopy in transmission geometry and in the backscattering mode in the electronic channel in austenitic stainless steel 12Cr18Ni10Ti irradiated with 57Fe ions in the heavy ions accelerator. The X-ray diffraction method and Mössbauer spectroscopy showed the austenitic mono-phase in the original steels. The austenite remains the dominant phase in the irradiated samples, and the radiation initiated martensitic phase is available in small amounts.

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Study of radiation-induced processes in a layered Be-Fe-Be system subjected to ion irradiation and subsequent isochronous annealings

Cited by 3 publications

References 13 publications

Mössbauer and X-ray Studies of Radiation-Induced Processes in Nb–Zr Alloys Implanted with 57Fe Ions

Mössbauer and X-ray Studies of Radiation-Induced Processes in Nb–Zr Alloys Implanted with 57Fe Ions

Impact of Ion Irradiation upon Structure and Magnetic Properties of NANOPERM‐Type Amorphous and Nanocrystalline Alloys

MOSSBAUER STUDIES OF 12Cr18Ni10Ti STEEL SAMPLES EXPOSED TO RADIATION WITH 57Fe IONS

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