X-ray Diffraction Study on Crystal Structure of Mn<sub>1.8</sub>Co<sub>0.2</sub>Sb under High Magnetic Fields

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  • Orihashi Hiroki
    Graduate School of Science Engineering, Kagoshima University
  • Mitsunaga Daisuke
    Graduate School of Science Engineering, Kagoshima University
  • Hiroi Masahiko
    Graduate School of Science Engineering, Kagoshima University
  • Mitsui Yoshifuru
    High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University
  • Takahashi Kohki
    High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University
  • Watanabe Kazuo
    High Field Laboratory for Superconducting Materials, Institute for Materials Research, Tohoku University
  • Koyama Keiichi
    Graduate School of Science Engineering, Kagoshima University

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Other Title
  • 強磁場 X 線回折実験による Mn<sub>1.8</sub>Co<sub>0.2</sub>Sb の磁場中結晶評価
  • 強磁場X線回折実験によるMn₁.₈Co₀.₂Sbの磁場中結晶評価
  • キョウジジョウ Xセン カイセツ ジッケン ニ ヨル Mn ₁.₈ Co ₀.₂ Sb ノ ジバ チュウ ケッショウ ヒョウカ
  • X-ray Diffraction Study on Crystal Structure of Mn1.8Co0.2Sb under High Magnetic Fields

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Measurements of magnetization, electrical resistivity and high field X-ray powder diffraction (XRD) were carried out for polycrystalline Mn1.8Co0.2Sb in magnetic fields up to 5 T in 4.2-300 K temperature range, in order to investigate the structural properties affected by magnetic fields. In a zero field, the compound shows the first-order magnetic transition from the ferrimagnetic (FRI) to antiferromagnetic (AFM) states at Tt=145 K with decreasing temperature. By applying magnetic fields of 5 T, Tt decreased to 60 K with thermal hysteresis of 35 K. From the XRD measurements, not only the AFM phase but also the residual FRI phase was confirmed even at 10 K in cooling process under 5 T. Results obtained indicate that the residual FRI phase is kinetically arrested.<br>

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