X-ray and Mössbauer studies of the Tb0.3Dy0.7Fe2 − x Co x system alloys

Ilyushin, A. S.; Никитин, С.А.; Ngiep, Nguen Van; Opalenko, A. A.; Терешина, И. С.; Firov, A. I.

doi:10.3103/s002713490704008x

Cited by 5 publications

(6 citation statements)

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“…This formula is used to follow the experimental points and is obtained by a least squares fitting procedure. The border line values of the studied series coincide well with the existing literature data (open points) [22][23][24][25][26][27]. The observed convex deviation a(x) from Vegard's rule, i.e.…”

Section: Materials and X-ray Studiessupporting

confidence: 83%

“…The observed convex deviation a(x) from Vegard's rule, i.e. linear dependence, is typical of R-M intermetallics [15,22,24,28].…”

Section: Materials and X-ray Studiesmentioning

confidence: 99%

“…The average H hf dependence for site 1 can be divided into three sections described by the numerical formulae: Figure 7 also contains literature data [22,36].…”

Section: Average Hyperfine Interaction Parametersmentioning

confidence: 99%

“…Dependence 1 corresponds to average values, dependencies 2, 4 correspond to site 1 and dependencies 3, 5 correspond to site 2. Pluses denote literature data[22,24,36].approached for the Tb 0.27 Dy 0.73 (Fe 0.7 Co 0.3 ) 2 compound. At this composition the filling up of the majority 3d subband by 3d electrons is terminated.…”

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confidence: 99%

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Mössbauer effect studies of Tb0.27Dy0.73(Fe1−x Co x )2 intermetallics at 295 K

et al. 2010

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The synthesis of materials and the studies of crystal structure and 57 Fe Mössbauer effect were performed for Tb0.27Dy0.73(Fe1−xCox)2 intermetallics. Terfenol-D (Tb 0.27Dy0.73Fe2) is the starting compound of this Fe/Co-substituted series. X-ray measurements showed evidence of a pure cubic Laves phase C15, MgCu2-type, and unit cell parameters were determined across the series. A Co substitution introduced local area, at sub-nanoscale, with random Fe/Co neighbourhoods of the 57 Fe atoms.Mössbauer effect spectra for the Tb 0.27Dy0.73(Fe1−xCox)2 series at room temperature are composed of a number of locally originated subspectra due to the random distribution of Fe and Co atoms in the transition metal sublattice, and due to [1 1 1] an easy axis of magnetization. Isomer shift, magnetic hyperfine field and quadrupole interaction parameter were obtained from the spectra, both for the local area and for the bulk sample.As a result of Fe/Co substitution, a Slater-Pauling-type curve for the average magnetic hyperfine field vs. Co content was observed. It was found that the magnetic hyperfine fields corresponding to the local area also create a dependence of the Slater-Pauling-type vs. Co contribution in the Fe/Co neighbourhoods.

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Section: Materials and X-ray Studiessupporting

confidence: 83%

“…The observed convex deviation a(x) from Vegard's rule, i.e. linear dependence, is typical of R-M intermetallics [15,22,24,28].…”

Section: Materials and X-ray Studiesmentioning

confidence: 99%

“…The average H hf dependence for site 1 can be divided into three sections described by the numerical formulae: Figure 7 also contains literature data [22,36].…”

Section: Average Hyperfine Interaction Parametersmentioning

confidence: 99%

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confidence: 99%

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Mössbauer effect studies of Tb0.27Dy0.73(Fe1−x Co x )2 intermetallics at 295 K

et al. 2010

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“…. , 0.9 and 1.0) with a cubic, Fd3m, MgCu 2 -type (C15) crystal structure have been previously partially studied elsewhere [18][19][20][21][22][23][24]. The unit cell parameter, for complete data of the series, described by the following numerical formula: a(x) = (−0.104x 2 − 0.029x + 7.337) Å decreases softly non-linearly with cobalt content x [25].…”

Section: Spectra and Analysismentioning

confidence: 99%