Formation of iron-nitrides by irradiation of 57Fe/Si bilayers with N2+ ions

Bibić, N.; Milinović, V.; Dhar, S.; Lieb, Klaus‐Peter; Milosavljević, M.; Šiljegović, M.; Peruško, D.; Schaaf, Peter

doi:10.1016/j.tsf.2003.12.077

Cited by 8 publications

(4 citation statements)

References 16 publications

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“…Plasma nitriding 1 mm thick Fe discs resulted in a mixture of ε-Fe 2−3 N and γ′-Fe 4 N. 74 Similar phases were obtained by plasma nitriding electrolytic Fe with a plasma glow discharge in 80:20 H 2 :N 2 at 400 Pa for 0.5−1.5 h, 75 at 9 mbar pressure and 500 °C up to 6 h, 76 and pulsed plasma nitridation of Fe foil in NH 3 at 2.5 mbar pressure for 24 h. 77 A mixture of Fe + ε-Fe 2+x N + ε-Fe 2 N layers were obtained by irradiation with 22 keV N 2+ ions supplied by an electron cyclotron resonance ion source at RT. 78 In fact plasma-assisted implantation of N ions on the surface of steel is a way to enhance resistance to wear and corrosion. 79 Single-phase Fe−N thin films could be deposited by direct current (dc)-magnetron sputtering with mixed Ar/N 2 discharges on glass substrates.…”

Section: Synthesis Of Iron Nitridesmentioning

confidence: 99%

“…81 Composite layers of Fe + ε-Fe 2+x N + ε-Fe 2 N were fabricated by irradiation of Fe/Si bilayers with 22 keV N 2+ ions at RT. 78 Plasma ion nitriding of α-Fe in the presence of a N 2 /H 2 mixture with 8 × 10 −2 partial pressure of H 2 under 0.4−1.3 Pa pressure resulted in the mixture of α-Fe + Fe 4 N + Fe 16 N 2 + ε-Fe 24 N 10 . 161 Composites of Li 3 FeN 2 and Fe were obtained when Fe powder was microwave irradiated with a slight excess of Li 3 N under N 2 gas.…”

Section: Synthesis Of Iron Nitridesmentioning

confidence: 99%

“…For example, ε-Fe 2–3 N and γ′-Fe 4 N coexisted during plasma nitriding of Fe and ammonolysis of iron hydroxide at 600–800 °C. , DC magnetron sputtering with mixed Ar/N 2 discharges gave composite phases of ε-Fe 3 N−γ′-Fe 4 N with 10% N 2 and the composite of FeN 0.056 –α″-Fe 16 N 2 at 5% N 2 . Composite layers of Fe + ε-Fe 2+ x N + ε-Fe 2 N were fabricated by irradiation of Fe/Si bilayers with 22 keV N 2+ ions at RT . Plasma ion nitriding of α-Fe in the presence of a N 2 /H 2 mixture with 8 × 10 –2 partial pressure of H 2 under 0.4–1.3 Pa pressure resulted in the mixture of α-Fe + Fe 4 N + Fe 16 N 2 + ε-Fe 24 N 10 .…”

Section: Synthesis Of Iron Nitridesmentioning

confidence: 99%

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Iron Nitride Family at Reduced Dimensions: A Review of Their Synthesis Protocols and Structural and Magnetic Properties

Bhattacharyya

2015

J. Phys. Chem. C

114

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Magnetic nanoparticles (NPs) are prominent in various fields of scientific research and applications such as magnetic energy storage, magnetic fluids, biomedical fields, and catalysis. Metallic Fe NPs are difficult to protect from air oxidation, and iron oxide NPs suffer from reduced magnetization. Iron nitrides have the advantage of retaining high saturation magnetization (M S ); for example, α″-Fe 16 N 2 and γ′-Fe 4 N have average magnetic moments of 2.9 and 2 μ B /Fe, respectively, which are comparable to 2.2 μ B /Fe for α-Fe. The iron nitrides are ferromagnetic (FM) up to a maximum lattice dilution of 25% nitrogen for ε-Fe 3 N. Even though Fe−N NPs are extremely attractive as magnetic materials, the focus has been majorly on the bulk powders and thin films. This review provides a comprehensive overview of the crystal structures, nitriding kinetics, and synthesis methodologies of binary, doped, and ternary nanostructures, thin films, and bulk materials and their magnetism. Substitution of Fe by any other metal atom in the doped and ternary nanostructures breaks the long-range FM ordering but equally provides interesting low-temperature magnetic ordering such as spin glass and exchange bias. The dopant concentration dependence of the magnetic properties of the hybrid systems is discussed.

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Section: Synthesis Of Iron Nitridesmentioning

confidence: 99%

Section: Synthesis Of Iron Nitridesmentioning

confidence: 99%

Section: Synthesis Of Iron Nitridesmentioning

confidence: 99%

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Iron Nitride Family at Reduced Dimensions: A Review of Their Synthesis Protocols and Structural and Magnetic Properties

Bhattacharyya

2015

J. Phys. Chem. C

114

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“…The evolution of the phase transitions derived from CEMS analyses is summarized in Neglecting the chemical effects that can be caused by nitrogen ions, the atomic transport across the Fe/Si interface is expected to be dominated by ballistic effects 11,12]. The expression for the ballistic mixing k ball (Chapter 2.1.3, Eq 2.10) is:…”

Section: Phase Formationmentioning

confidence: 99%

Ion-beam mixing of Fe/Si bilayers

Velimir¹

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Summary__________________________________________________________2 Introduction _______________________________________________________3 Interaction of ions with solids _____________________________________32.1.1.Energy loss: _________________________________________________3 2.1.2. Collision cascades____________________________________________6 2.1.3. Ion-beam induced mixing ______________________________________6 2.2. The Fe-Si system _______________________________________________9 2.3. Previous results of ion beam mixing of Fe/Si bilayers ________________11 2.4. The aim of this work ___________________________________________12 3. Experimental techniques ____________________________________________13 3.1. Film preparation ______________________________________________13 3.2. Rutherford Backscattering Spectroscopy (RBS) ____________________13 3.3. Mössbauer spectroscopy ________________________________________18 3.4. The Magneto-Optical Kerr Effect (MOKE) ________________________28 3.5. X-Ray Diffraction (XRD) _______________________________________31 4. Nitrogen irradiation and thermal annealing ____________________________33 4.1. Sample preparation and 14 N ++ ion irradiation ______________________34 4.2. Results and discussion __________________________________________34 4.2.1. Phase formation ____________________________________________34 4.2.2. Ion beam mixing ____________________________________________38 4.3. Annealing: results and discussion_________________________________40 5. Effects of substrate amorphization and ion charge _______________________45 5.1. Sample preparation ____________________________________________45 5.2. Results and discussion __________________________________________46 6. Swift ion irradiation with 350 MeV Au ions _____________________________55 6.1. Sample preparation ____________________________________________55 6.2. Results and discussion __________________________________________55 7. References _______________________________________________________64 Acknowledgements___________________________________________________68

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