Change in Superparamagnetic State Induced by Swift Heavy Ion Irradiation in Nano-Maghemite
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
Author Contributions
Funding
Data Availability Statement
Acknowledgments
Conflicts of Interest
References
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Spectrum | T (K) | Component | Species | A (%) | δ (mm s−1) | Δ (mm s−1) | Bint (T) | f = 10n−lgπ n |
---|---|---|---|---|---|---|---|---|
Non- irradiated maghemite | 295 | Sextet (1) | Fe3+ | 26.1 (±1.1) | 0.38 (±0.03) | −0.04 (±0.03) | 44.1 (±0.4) | - |
Relaxation (1) | Fe3+ | 49.8 (±1.8) | 0.37 (±0.02) | 0.25 (±0.03) | 44.2 (±0.4) | 7.11 | ||
Relaxation (2) | Fe3+ | 24.1 (±1.4) | 0.32 (±0.03) | - | 30.0 (±0.3) | 7.58 | ||
Irradiated with Xe with 5 × 1013 ions cm−2 | 295 | Sextet (1) | Fe3+ | 24.2 (±0.9) | 0.37 (±0.03) | −0.2 (±0.03) | 47.2 (±0.4) | - |
Relaxation (1) | Fe3+ | 28.8 (±1.9) | 0.35 (±0.03) | 0.23 (±0.03) | 45.0 (±0.4) | 9.02 | ||
Relaxation (2) | Fe3+ | 46.5 (±1.7) | 0.31 (±0.03) | - | 23.0 (±0.3) | 8.19 | ||
Irradiated with Xe with 1 × 1014 ions cm−2 | 295 | Sextet (1) | Fe3+ | 15.9 (±1.3) | 0.38 (±0.03) | −0.21 (±0.03) | 38.5 (±0.4) | - |
Relaxation (1) | Fe3+ | 48.2 (±1.9) | 0.35 (±0.02) | 0.26 (±0.03) | 50.0 (±0.4) | 9.12 | ||
Relaxation (2) | Fe3+ | 35.9 (±1.8) | 0.32 (±0.03) | - | 45.1 (±0.3) | 8.42 |
Spectrum | T (K) | Component | Species | A (%) | δ (mm s−1) | Δ (mm s−1) | Bint (T) | f = 10n−lgπ n |
---|---|---|---|---|---|---|---|---|
Non- irradiated maghemite | 80 | Sextet (1) | Fe3+ | 48.2 (±1.3) | 0.46 (±0.02) | −0.02 (±0.03) | 51.5 (±0.3) | - |
Sextet (2) | Fe3+ | 35.8 (±1.1) | 0.43 (±0.02) | 0.01 (±0.03) | 48.7 (±0.3) | - | ||
Sextet (3) | Fe3+ | 16.0 (±0.8) | 0.47 (±0.02) | 0.04 (±0.04) | 44.8 (±0.3) | - | ||
Irradiated with Xe with 5 × 1013 ions cm−2 | 80 | Sextet (1) | Fe3+ | 43.5 (±1.3) | 0.46 (±0.02) | 0.00 (±0.03) | 51.6 (±0.3) | - |
Sextet (2) | Fe3+ | 36.6 (±1.0) | 0.44 (±0.02) | −0.02 (±0.03) | 48.9 (±0.3) | - | ||
Sextet (3) | Fe3+ | 19.9 (±1.0) | 0.43 (±0.02) | −0.02 (±0.03) | 45.3 (±0.3) | - | ||
Irradiated with Xe with 1 × 1014 ions cm−2 | 80 | Sextet (1) | Fe3+ | 41.1 (±1.5) | 0.39 (±0.02) | −0.08 (±0.03) | 48.5 (±0.3) | - |
Sextett (2) | Fe3+ | 33.2 (±1.3) | 0.46 (±0.02) | −0.07 (±0.03) | 44.8 (±0.4) | - | ||
Sextett (3) | Fe3+ | 6.4 (±1.6) | 0.52 (±0.04) | 0.20 (±0.05) | 39.8 (±0.5) | - | ||
Relaxation * | Fe3+ | 19.3 (±1.9) | 0.52 (±0.04) | 0.1 (±0.03) | 55.0 (±0.4) | 9.56 |
Sample | Linewidth (Degree) β | Crystallite Size (nm) | ||
---|---|---|---|---|
Dmin | D | Dmax | ||
non-irradiated | 1.26 ± 0.03 | 8.76 | 8.97 | 9.19 |
irradiated with a fluence of 1 × 1014 ion cm−2 | 1.75 ± 0.18 | 5.85 | 6.46 | 7.20 |
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Stichleutner, S.; Herczeg, B.; Pechoušek, J.; Machala, L.; Homonnay, Z.; Smrčka, D.; Kouřil, L.; Vondrášek, R.; Kudor, M.; Skuratov, V.A.; et al. Change in Superparamagnetic State Induced by Swift Heavy Ion Irradiation in Nano-Maghemite. Metals 2024, 14, 421. https://doi.org/10.3390/met14040421
Stichleutner S, Herczeg B, Pechoušek J, Machala L, Homonnay Z, Smrčka D, Kouřil L, Vondrášek R, Kudor M, Skuratov VA, et al. Change in Superparamagnetic State Induced by Swift Heavy Ion Irradiation in Nano-Maghemite. Metals. 2024; 14(4):421. https://doi.org/10.3390/met14040421
Chicago/Turabian StyleStichleutner, Sándor, Bence Herczeg, Jiří Pechoušek, Libor Machala, Zoltán Homonnay, David Smrčka, Lukáš Kouřil, René Vondrášek, Mátyás Kudor, Vladimir A. Skuratov, and et al. 2024. "Change in Superparamagnetic State Induced by Swift Heavy Ion Irradiation in Nano-Maghemite" Metals 14, no. 4: 421. https://doi.org/10.3390/met14040421