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- Title
<sup>57</sup>Fe Mössbauer Effect Study of Y(Fe<sub>1 –</sub><sub>x</sub>Ni<sub>x</sub>)<sub>2</sub> Synthesized under High Pressure.
- Authors
Bokov, A. V.; Magnitskaya, M. V.; Salamatin, D. A.; Tsvyashchenko, A. V.
- Abstract
The measurements of magnetic hyperfine fields (MHF), Hhf, and isomer shift, δ, in Y(Fe1 –xNix)2 intermetallic compounds (the MgCu2 structure type) synthesized at high pressure are performed. The MHF values that appear on 57Fe nuclei at a nickel concentration x below 20 at % practically do not change and are approximately equal to 22 T, and in the range from x = 0.4 to 0.98 they decrease linearly with an increase in the Ni concentration. However, linear extrapolation of the hyperfine field as a function of Ni concentration does not lead to its disappearance in YNi2. For YFe2, the rotation of the easy axis from the [101] direction to the [111] direction with increasing temperature is found. As the Ni concentration increases to x = 0.3 at a temperature of 5 K, the easy magnetization axis [101] is observed, and at x = 0.4 the axis changes direction to [100]. Based on the shape of the concentration dependence of the hyperfine field, it is assumed that during the crystallization of Y(Fe1 –xNix)2 under high pressure conditions, a magnetic moment exists on Ni ions. First-principles calculations of magnetic properties and hyperfine interactions are performed, which are consistent with experiment.
- Subjects
MOSSBAUER effect; MAGNETIC field measurements; HYPERFINE interactions; INTERMETALLIC compounds; MAGNETIC moments; MAGNETIC properties; IRON-nickel alloys
- Publication
Journal of Experimental & Theoretical Physics, 2023, Vol 136, Issue 3, p305
- ISSN
1063-7761
- Publication type
Article
- DOI
10.1134/S1063776123020024