Magnetic and Crystallographic Studies on MnAs Substituted by P or Sb

  • Haneda Satoshi
    The Research Institute for Iron, Steel and Other Metals, Tohoku University
  • Yamaguchi Yasuo
    The Research Institute for Iron, Steel and Other Metals, Tohoku University
  • Watanabe Hiroshi
    The Research Institute for Iron, Steel and Other Metals, Tohoku University
  • Kazama Noriaki
    The Research Institute for Iron, Steel and Other Metals, Tohoku University

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  • Magnetic and Crystallographic Studies o

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The relation between the magnetic moment and the lattice constant of the compounds MnAs substituted by P or Sb is investigated by the magnetic measurement under high magnetic field and X-ray diffraction. From the experimental data, it is confirmed that the low spin state is stable below TN (Néel temperature), and the low spin to high spin transition accompanied by large anisotropic change of the lattice constants occurs above TN by substituting P to As in a wide range of composition exceeding 3%. Our conclusion is that this anisotropic change is related to that of the electron configuration.

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