Magnetism of nanocrystalline Finemet alloy: experiment and simulation

Crisan, O.; Grenèche, Jean‐Marc; Breton, J.M. Le; Crisan, A.; Labaye, Y.; Berger, L.; Filoti, G.

doi:10.1140/epjb/e2003-00207-3

Cited by 21 publications

(15 citation statements)

References 19 publications

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“…For the alloys A (Finemet type) the beginning of the first crystallization step correlates with the increase of magnetization, as a fact that was well described, e.g. in recent papers [7,8]. The maximum of magnetization measured at 820 K for the first crystallization step as shown on Fig.…”

Section: Resultssupporting

confidence: 70%

Soft magnetic alloys with amorphous and ultra-fine grain structure upon loading with hydrogen

Skryabina

Fruchart

2006

Journal of Alloys and Compounds

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Section: Resultssupporting

confidence: 70%

Soft magnetic alloys with amorphous and ultra-fine grain structure upon loading with hydrogen

Skryabina

Fruchart

2006

Journal of Alloys and Compounds

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“…The as-deposited film and the film annealed at 650 ℃ for 20 min show patterns with broad Bragg lines, centred at about 42° (in 2θ). In most alloys, such patterns are characteristic of a material structure made of small nanocrystals [23][24][25] with topological disorder [26,27] and dominant amorphous-like structure [28]. The broad Bragg lines observed in the patterns suggest the existence of a Cr-Al-C solid solution.…”

Section: X-ray Diffraction Patternsmentioning

confidence: 99%

Incipient low-temperature formation of MAX phase in Cr–Al–C films

Crisan

2018

J Adv Ceram

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Ceramic-metallic MAX phase of chromium aluminium carbide ternary compounds was successfully obtained through deposition by DC sputtering onto Si substrates. A study of the influence of substrate temperature and in-air post-annealing on the film crystallinity and oxidation was undertaken. Scanning electron microscopy (SEM), wavelength-dispersive X-ray analysis (WDSX), and X-ray diffraction (XRD) were used for film characterization. It is shown that, at substrate temperature of about 450 ℃, as-deposited films are amorphous with small nanocrystals. Subsequent annealing in air at 700 ℃ leads to film crystallization and partial oxidation. WDSX spectroscopy shows that the films oxidise to a depth of around 120 nm, or 5% of total film thickness which amounts at around 2.68 µm. As a novelty, this demonstrates the possibility of in-air crystallization of Cr 2 AlC films without significant oxidation. Materials Analysis Using Diffraction (MAUD) software package for a full-profile analysis of the XRD patterns (Rietveld-type) was used to determine that, as a result of annealing, the average crystallite size changes from 7 to 34 nm, while microstrain decreases from 0.79% to 0.24%. A slight tendency of preferential growth along the (10 10) direction has been observed. Such texturing of the microstructure has the potential of inducing beneficial anisotropic fracture behaviour in the coatings, potentially interesting for several industrial applications in load-bearing devices.

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“…The comparison of the Sample A and B shows that the graphite can form protective coatings (shells), but the interface between Fe 3 C and graphite must be taken into account. This is documented by the broad region of the magnetic transition from ferromagnetic to paramagnetic state (smeared Curie point) and also by the additional component in the Mo¨ssbauer spectrum which is typically assigned to the iron atoms in interfacial regions [10,11]. The differences in saturation magnetization can be ascribed to the substantially larger volume fraction of the second phase (graphite) in the Sample B.…”

Section: Resultsmentioning

confidence: 93%