Crossover of Spin Correlations in Pt100-XFeX (16.LEQ.X.LEQ.25) Alloys.

  • Tsunoda Yorihiko
    Department of Applied Physics, School of Science and Engineering, Waseda University
  • Tsuchiya Daisuke
    Department of Applied Physics, School of Science and Engineering, Waseda University
  • Higashiyama Yasuyuki
    Department of Applied Physics, School of Science and Engineering, Waseda University

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Other Title
  • Crossover of Spin Correlations in Pt100-xFex(16≦X≦25) Alloys
  • Crossover of Spin Correlations in Pt100 xFex 16 X 25 Alloys
  • Crossover of Spin Correlations in Pt<sub>100-<i>X</i></sub>Fe<sub><i>X</i></sub>(16 ≦<i>X</i>≦25) Alloys

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Abstract

Magnetic structures of Pt100−XFeX (X=16, 18, 24 and 25) alloys were studied by means of neutron elastic and inelastic scattering. Non-collinear antiferromagnetic structure is experimentally verified for the ground state of the stoichiometric alloy Pt3Fe. The antiferromagnetic phase transition below TN in Pt3Fe alloy is considered to be one of the crossover points of the antiferromagnetic spin correlations which show successive change towards the original point of the reciprocal lattice with increasing Fe concentration in the wide concentration range of the Pt–Fe system.

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