The Effect of Phase Decomposition on Magnetic Structure of Cu_{0.4}Mn_{0.3}Ni_{0.3} Alloy

• Authors: K. Świderska , J. Jankowska-Kisielińska
• Languages of publication: EN

Abstracts

EN

The purpose of present investigation was to study the effects of phase decomposition of the Cu_{0.4}Mn_{0.3}Ni_{0.3} alloy on its magnetic ordering. The single-crystal sample was examined by elastic neutron scattering before and after five subsequent annealing runs. The results indicate that in small fraction of the quenched sample volume there are two types of antiferromagnetic order: one of them AF1 of the long range, the other one of the short range. Ageing induces phase decomposition which yields disappearance of AF1 long range order and increase of the volume of new ordered phase. The results of the investigations of the aged sample indicate that regions of new tetragonal phase exhibit antiferromagnetic ordering with magnetic moments of Mn atoms arranged as in the pure compound MnNi but with unequal domain distribution. The intensity of magnetic component of super-structure reflections increases with the duration of ageing at lower rate than component due to atomic order.

Keywords

EN

61.05.F-; 64.75.-g; 75.40.-s; 75.47.Np; 75.50.Ee; 81.40.Rs

Discipline

• 64.75.-g: Phase equilibria(see also 82.60.Lf Thermodynamics of solutions; 47.51.+a Mixing in fluid dynamics; for properties of solutions of biomolecules, see 87.15.N- in biological physics)
• 75.50.Ee: Antiferromagnetics
• 75.47.Np: Metals and alloys
• 81.40.Rs: Electrical and magnetic properties related to treatment conditions
• 75.40.-s: Critical-point effects, specific heats, short-range order(for equilibrium properties near critical points, see 64.60.F-; for dynamical critical phenomena, see 64.60.Ht)
• 61.05.F-: Neutron diffraction and scattering

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2015
• Volume: 127
• Issue: 2
• Pages: 394-396

Dates

published

2015-02

Contributors

author

K. Świderska

• National Centre for Nuclear Research, 05-400 Otwock-Świerk, Poland

author

J. Jankowska-Kisielińska

• National Centre for Nuclear Research, 05-400 Otwock-Świerk, Poland

References

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• [5] J.S. Kasper, J.S. Kouvel, J. Phys. Chem. Solids 11, 231 (1959), doi: 10.1016/0022-3697(63)90515-8
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Identifiers

DOI

10.12693/APhysPolA.127.394