Mössbauer and magnetic studies of Fe3−xCoxAl

Szymański, K.; Biernacka, M.; Dobrzyński, L.; Perzyńska, K.; Rećko, K.; Satuła, D.; Waliszewski, J.; Zaleski, P.

doi:10.1016/s0304-8853(99)00644-7

Cited by 21 publications

(10 citation statements)

References 29 publications

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“…In the ordered DO 3 structure of Fe 3 Al, Fe occupies sites in two different sublattices with H hf = 216 kOe and IS = 0.19 mm s −1 and, respectively, H hf = 327 kOe and IS = 0.07 mm s −1 , whose contributions to the Mössbauer spectra are in the ratio 2:1 [6,7]. Therefore, the contribution given to the spectrum in Fig.…”

Section: Resultsmentioning

confidence: 88%

“…Spectrum 1b, in turn, shows that an annealing treatment at 350 • C for 1 h led a significant interdiffusion to occur in the sample, with the following effects: (1) formation of the Fe 3 Al intermetallic compound (sextet η) [6], (2) increase in the amount of Fe-Al solid solutions, as suggested by area measurements of the contributions to the spectra, and (3) disappearance of α-Fe in the form of small particles. In the ordered DO 3 structure of Fe 3 Al, Fe occupies sites in two different sublattices with H hf = 216 kOe and IS = 0.19 mm s −1 and, respectively, H hf = 327 kOe and IS = 0.07 mm s −1 , whose contributions to the Mössbauer spectra are in the ratio 2:1 [6,7].…”

Section: Resultsmentioning

confidence: 99%

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Protection against corrosion of iron alloys by aluminized coatings produced using two different processes

et al. 2008

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Aluminized coatings were produced on iron by means of two different processes: electron beam deposition under UHV of Al on iron samples previously covered with 57 Fe films, and hot-dipping of iron samples in molten aluminium. Aluminized samples were submitted to thermal treatments in order to promote interdiffusion at the Fe-Al interface and favour the formation of Fe-Al intermetallic compounds of composition suitable to protect the underlying iron from oxidation. Phase composition, structure and morphology of both as deposited and thermally treated coatings were characterized by means of X-ray diffraction, Mössbauer spectroscopy and metallographic techniques. Significant differences among the effects of the Fe-Al interdiffusion occurring for Al layers produced with the two processes are pointed out and discussed.

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Section: Resultsmentioning

confidence: 88%

Section: Resultsmentioning

confidence: 99%

Protection against corrosion of iron alloys by aluminized coatings produced using two different processes

et al. 2008

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“…Iron-based transition metal alloys show a great sensitivity to environmental effects [5], for instance, the definite site preference of Cr, Co or V in Fe-Al or Fe-Si systems even in the presence of disorder [6][7][8][9]. It is therefore interesting to study the trend of hyperfine fields in the stoichiometric alloy Fe 2 CrAl.…”

Section: Introductionmentioning

confidence: 98%

Mössbauer studies of hyperfine fields in disordered Fe2CrAl

2002

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Heusler-like alloy Fe 2 CrAl was prepared and studied. Structure determination was done by X-ray. The structure was found to conform to the B 2 type. Magnetic hyperfine fields in this sample were studied by the Mössbauer effect. The Mössbauer spectra were recorded over a range of temperature from 40 to 296 K. The Mössbauer spectra showed the co-existence of a paramagnetic part with a magnetic hyperfine portion at all recorded temperatures. Even with the distribution in the magnetic hyperfine field, the average hyperfine field follows the´T T c µ 3 2 law. The paramagnetic part of the hyperfine field is explained in terms of the clustering of Cr atoms.

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“…The assumption, however, is not a rule. For example, in the alloys with DO 3 structure, the experimental results showed that the atomic arrangement is not a subject to such simple rules [8][9][10].…”

Section: Introductionmentioning

confidence: 93%

Determination of hyperfine fields and atomic ordering in NiMnFeGe exhibiting martensitic transformation

et al. 2015

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Abstract. The hyperfi ne fi elds and atomic ordering in Ni 1−x Fe x MnGe (x = 0.1, 0.2, 0.3) alloys were investigated using X-ray diffraction and Mössbauer spectroscopy at room temperature. The X-ray diffraction measurements show that the samples with x = 0.2, 0.3 crystallized in the hexagonal Ni 2 In-type of structure, whereas in the sample with x = 0.1, the coexistence of two phases, Ni 2 In-and orthorhombic TiNiSi-type of structures, were found. The Mössbauer spectra measured with x = 0.2, 0.3 show three doublets with different values of isomer shift (IS) and quadrupole splitting (QS) related to three different local surroundings of Fe atoms in the hexagonal Ni 2 In-type structure. It was shown that Fe atoms in the hexagonal Ni 2 In-type structure of as-cast Ni 1−x Fe x MnGe alloys are preferentially located in Ni sites and small amount of Fe is located in Mn and probably in Ge sites. The spectrum for x = 0.1 shows the doublets in the central part of spectrum and a broad sextet. The doublets originate from the Fe atoms in the paramagnetic state of hexagonal Ni 2 In-type structure, whereas the sextet results from the Fe atoms in orthorhombic TiNiSi-type structure.

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Mössbauer and magnetic studies of Fe3−xCoxAl

Cited by 21 publications

References 29 publications

Protection against corrosion of iron alloys by aluminized coatings produced using two different processes

Protection against corrosion of iron alloys by aluminized coatings produced using two different processes

Mössbauer studies of hyperfine fields in disordered Fe2CrAl

Determination of hyperfine fields and atomic ordering in NiMnFeGe exhibiting martensitic transformation

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