Ion bombardment of Fe-based amorphous metallic alloys

Miglierini, Marcel; Lančok, Adriana; Pavlovič, Márius

doi:10.1007/s10751-009-9928-5

Cited by 19 publications

(13 citation statements)

References 10 publications

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“…TMS of the samples irradiated with 593 MeV Au ions exhibited changes in orientation of the net magnetic moment at 1 × 10 12 ions/cm 2 [5], which is a fluence causing the radiation damage due to nuclear stopping of less than 0.01 dpa (Fig. 1).…”

Section: Resultsmentioning

confidence: 98%

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Ion Irradiation Studies of Soft Magnetic Metallic Glasses

et al. 2010

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Finemet and Vitrovac• R 6025 metallic glasses were irradiated by light (N) and heavy (Au and Ta) ions at different energies from 110 keV to 250 MeV/u (MeV per mass unit) and fluences from 1 × 10 11 ions/cm 2 to 1 × 10 17 ions/cm 2 . They were analysed by the Mössbauer spectrometry and magnetic susceptibility measurements. Qualitative differences were observed between the radiation effects caused by light and heavy ions.

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Section: Resultsmentioning

confidence: 98%

“…Samples of Finemet irradiated by 110 keV N ions showed changes in spectral parameters, especially in isomer shift, at 2 × 10 16 ions/cm 2 [5]. This is the fluence that causes radiation damage of dpa > 10 due to elastic nuclear stopping.…”

Section: Resultsmentioning

confidence: 99%

Ion Irradiation Studies of Soft Magnetic Metallic Glasses

et al. 2010

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“…The study is a part of a complex long-term research programme devoted to studying the influence of radiation on magnetic metallic alloys. In addition to heavy ions, this programme includes also neutrons (6) and light ions (7,8).…”

Section: Introductionmentioning

confidence: 99%

Radiation damage studies of soft magnetic metallic glasses irradiated with high-energy heavy ions

Pavlovič

Miglierini

Мустафин

et al. 2015

Radiation Effects and Defects in Solids

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Some soft magnetic metallic glasses are considered for use in magnetic cores of accelerator radio frequency cavities. Due to losses of the circulating ion beam, they may be exposed to irradiation by different ions at different energies. This paper presents data and review results of irradiation experiments concerning the influence of high-energy heavy ions on magnetic susceptibility of VITROPERM ® -type metallic glasses. Samples of the VITROPERM ® magnetic ribbons were irradiated by Au, Xe and U ions at 11.1 MeV/A (per nucleon) and 5.9 MeV/A, respectively. Irradiation fluences from 1 × 10 11 up to 1 × 10 13 ions/cm 2 were applied. In case of the Au and U ions, the total fluence was accumulated in one beamtime, whereas two separate beamtimes were used to accumulate the final fluence in case of the Xe ions. Relative change in the samples' magnetic susceptibility after and before irradiation was evaluated as a function of the irradiation fluence. The irradiation experiments were performed with the UNILAC accelerator at GSI Helmholtzzentrum für Schwerionenforschung GmbH. They were simulated in SRIM2010 in order to obtain ionization densities (electronic stopping, dE/dx) and dpa (displacements per atom) caused by the ion beams in the sample material. This paper focuses mainly on the results collected in experiments with the Xe ions and compares them with data obtained in earlier experiments using Au and U ions. Radiation hardness of VITROPERM ® is compared with radiation hardness of VITROVAC ® that was studied in previous experiments. The VITROPERM ® samples showed less drop in magnetic susceptibility in comparison with the VITROVAC ® ones, and this drop occurred at higher fluences. This indicates higher radiation hardness of VITROPERM ® compared with VITROVAC ® . In addition, heavier ions cause bigger change in magnetic susceptibility than the lighter ones. The effect can be roughly scaled with electronic stopping, which suggests that the main mechanism of radiation damage is associated with swift electrons generated in the material via ionization by primary heavy ions.

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“…However, results obtained during the last two decades pointed out that irradiation did induce modifications of MGs properties. In particular, it has been observed that the specimen geometry [5,6], thermal stability and crystallization process [7], magnetic anisotropy [8], shape of hysteresis loops [9], magnetic susceptibility [10,11] and mechanical characteristics such as strength [12] of MGs can be affected by ion irradiation. Such changes might lead to a malfunction of devices that use MGs if operated, for example, in a new generation of high-power, heavy-ion accelerators.…”

Section: Introductionmentioning

confidence: 99%