Structural and Magnetic Properties of MnCo<sub>1−</sub><i><sub>x</sub></i>Fe<i><sub>x</sub></i>Ge<sub>1−</sub><i><sub>y</sub></i>Si<i><sub>y</sub></i> (<i>x</i>, <i>y</i> = 0, 0.5)

DOI Web Site 32 References
  • Sueyoshi Yukinari
    Graduate School of Science and Engineering, Kagoshima University
  • Kobayashi Ryota
    National Institute of Technology, Kurume College
  • Onoue Masahira
    Center for Advanced Science Research and Promotion, Kagoshima University
  • Mitsui Yoshifuru
    Graduate School of Science and Engineering, Kagoshima University
  • Umetsu Rie Y.
    Insitute for Materials Research, Tohoku University
  • Koyama Keiichi
    Graduate School of Science and Engineering, Kagoshima University Center for Advanced Science Research and Promotion, Kagoshima University

Search this article

Description

<p>Magnetic and structural properties of MnCo1−xFexGe1−ySiy (x, y = 0, 0.5) were investigated using X-ray powder diffraction and magnetization measurements in the temperature (T) range from 5 to 370 K and in magnetic fields up to μ0H = 5 T. At room temperature, MnCoGe and MnCoGe0.5Si0.5 were the orthorhombic crystal structure (M-phase), MnCo0.5Fe0.5Ge was the hexagonal crystal structure (P-phase), and MnCo0.5Fe0.5Ge0.5Si0.5 had two-phase coexistence of the M- and P-phases. MnCoGe and MnCo0.5Fe0.5Ge were a simple ferromagnetic and their Curie temperatures (TC) were determined to be 340 K and 200 K, respectively. MnCoGe0.5Si0.5 and MnCo0.5Fe0.5Ge0.5Si0.5 in μ0H ≤ 1 T showed a gentle dip in thermomagnetic curves at 10 ≤ T ≤ 100 K below TC which disappears when a magnetic field of μ0H > 3 T was applied. The magnetization curves of MnCoGe0.5Si0.5 and MnCo0.5Fe0.5Ge0.5Si0.5 at 5 K exhibited that a metamagnetic transition with the magnetic hysteresis in 0 < μ0H < 3 T. Our results suggest that substituting Fe for Co in MnCoGe system weakens the ferromagnetic interaction, whereas substituting Si for Ge strengthens the antiferromagnetic interaction.</p>

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 66 (6), 758-763, 2025-06-01

    The Japan Institute of Metals and Materials

References(32)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top