Structure and Short Range Order of Two Phases in the Single Domain Mn_{0.75}Cu_{0.25} Alloy after Spinodal Decomposition

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

Abstracts

EN

The aim of the present paper was to identify the atomic and magnetic structure and short-range order of the two phases present in the Mn_{0.75}Cu_{0.25} alloy after decomposition and plastic deformation. The sample was investigated by elastic neutron scattering at small-angle and 3-axes spectrometers. We have confirmed the decomposition of the alloy into two types of regions with manganese concentration increased and decreased as compared with the mean value. The crystal lattice in regions of both types is tetragonal (pseudo FCT) below T_{N} but degree of tetragonal distortion is different. The long range antiferromagnetic order is present only in the regions of bigger distortion and higher Mn concentration. In the regions of lower Mn content and smaller distortion there is a short range ordering of complex magnetic and atomic character.

Keywords

EN

61.05.F-; 75.30.Fv; 75.40.-s; 75.50.Lk

Discipline

• 75.30.Fv: Spin-density waves
• 75.50.Lk: Spin glasses and other random magnets
• 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: 2010
• Volume: 117
• Issue: 4
• Pages: 582-585

Dates

published

2010-04

Contributors

author

J. Jankowska-Kisielińska

• Institute of Atomic Energy, 05-400 Otwock-Świerk, Poland

author

K. Świderska

• Institute of Atomic Energy, 05-400 Otwock-Świerk, Poland

author

K. Mikke

• Institute of Atomic Energy, 05-400 Otwock-Świerk, Poland

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Identifiers

DOI

10.12693/APhysPolA.117.582