Ion Irradiation Studies of Soft Magnetic Metallic Glasses

Pavlovič, Márius; Miglierini, Marcel; Мустафин, Е. С.; Seidl, Tim; Ensinger, Wolfgang; Strasik, I.; Šoka, Martin

doi:10.12693/aphyspola.118.754

Cited by 6 publications

(6 citation statements)

References 6 publications

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“…Its final value of 0.32% is more than twice as high as the value at the fluence of 2 Â 10 12 ions cm À2 (0.15%). It should be noted that a similar effect of a sudden change was observed for the magnetic susceptibility in the A alloy irradiated with the fluence of 2 Â 10 12 ions cm À2 [10,11,36]. Based on the magnetic susceptibility measurements, it was found that the A alloy is magnetically stable up to the fluence of 2 Â 10 12 ions cm À2 .…”

Section: Structural Relaxation During the Full Heating-cooling Cyclesupporting

confidence: 53%

“…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%

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Structural modifications of swift-ion-bombarded metallic glasses studied by high-energy X-ray synchrotron radiation

et al. 2014

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Section: Structural Relaxation During the Full Heating-cooling Cyclesupporting

confidence: 53%

Section: Introductionmentioning

confidence: 99%

Structural modifications of swift-ion-bombarded metallic glasses studied by high-energy X-ray synchrotron radiation

et al. 2014

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“…Details of these experiments have been reported in (10,11). It is evident that VITROPERM ® is radiation harder against heavy ions than VITROVAC ® (direct comparison is possible especially via the data for Au ions at 11.1 MeV/A).…”

Section: Resultsmentioning

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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“…Figure 1 shows ionization density and dpa for VITROPERM R 800. Data for VITROVAC R 6025 can be found in [8]. In all cases, the range of ions is longer than the sample thickness, that is about 23 µm.…”

Section: Methodsmentioning

confidence: 99%

Influence of High Energy Heavy Ions on Magnetic Susceptibility of Soft Magnetic Metallic Glasses

et al. 2014

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This contribution presents experimental data concerning the inuence of fast heavy ions on magnetic susceptibility of VITROVAC R 6025 and VITROPERM R 800 metallic glasses. Samples of magnetic ribbons were irradiated with Au, and Ta ions at 11.1 MeV/A (energy per nucleon), and U ions at 5.9 MeV/A. The irradiation uences varied from 5 × 10 10 up to 1.2 × 10 13 ions/cm 2 . Relative change of the samples' magnetic susceptibility after and before irradiation was measured and evaluated as a function of the irradiation uence. Measurements were done with a commercial Kappa-bridge device. We observed that VITROPERM R showed less change of magnetic susceptibility in comparison with VITROVAC R and this change occurred at higher uences. This indicates higher radiation hardness of VITROPERM R compared with VITROVAC R against high-energy heavy ions. In addition, heavier ions caused larger change of magnetic susceptibility than the lighter ones and the eect could be roughly scaled with the level of electronic stopping.

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Ion Irradiation Studies of Soft Magnetic Metallic Glasses

Cited by 6 publications

References 6 publications

Structural modifications of swift-ion-bombarded metallic glasses studied by high-energy X-ray synchrotron radiation

Structural modifications of swift-ion-bombarded metallic glasses studied by high-energy X-ray synchrotron radiation

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

Influence of High Energy Heavy Ions on Magnetic Susceptibility of Soft Magnetic Metallic Glasses

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