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2009 | 115 | 1 | 203-205
Article title

Anisotropy of the Neutron Scattering in the Paramagnetic Phase and on the Spin Waves in the Mn_{0.71}Ni_{0.29} Alloy

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EN
Abstracts
EN
We have confirmed the significant anisotropy of the generalised magnetic susceptibility in the paramagnetic and antiferromagnetic phase of the fcc Mn-Ni alloys. In this paper the detailed account of the experiments performed on the Mn_{0.71}Ni_{0.29} alloy is given. Our main result for the paramagnetic phase is that the correlation length is larger for the direction parallel to the anisotropy axis than for the perpendicular one by a factor of 1.6. The spin-wave velocity observed at 15 K is higher for the direction parallel to the anisotropy axis than that for the perpendicular direction by a factor of 1.2. These results are similar to that for the Mn_{0.62}Ni_{0.38} alloy. Our results indicate that the magnetic carriers are more localized and the magnetic interactions are less extended in alloys with higher Ni concentration.
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Contributors
  • Institute of Atomic Energy, 05-400 Otwock-Świerk, Poland
  • Institute of Atomic Energy, 05-400 Otwock-Świerk, Poland
author
  • Institute of Atomic Energy, 05-400 Otwock-Świerk, Poland
References
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Document Type
Publication order reference
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YADDA identifier
bwmeta1.element.bwnjournal-article-appv115n1054kz
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