Magnetic and structural properties of MnCoGe with minimal fe and sn substitution

Masahira Onoue, Ryota Kobayashi, Yoshifuru Mitsui, Masahiko Hiroi, Kohki Takahashi, Akihiro Kondo, Koichi Kindo, Yoshiya Uwatoko, Keiichi Koyama

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9 Citations (Scopus)


The magnetic and structural properties of MnCo0.92Fe0.08Ge1-xSnx (x = 0.02, 0.05, and 0.1) were investigated. A first-order magnetic transition was observed, which was accompanied by the martensitic transformation from a hexagonal Ni2In-Type to an orthorhombic TiNiSi-Type structure in the vicinity of 320K for x = 0.02 and 170K for x = 0.05 with thermal hysteresis of approximately 20 K. The magnetization of MnCo0.92Fe0.08Ge0.95Sn0.05 was estimated to be 102Am2 kg-1 in 5 T at 10 K. High field magnetization curves up to 55 T for MnCo0.92Fe0.08Ge0.95Sn0.05indicated the field-induced martensitic transformation. Mössbauer spectroscopy experiments revealed that Fe atoms occupied 79%85% in the Co-site and 21%15% in the Mn-site.

Original languageEnglish
Pages (from-to)1645-1650
Number of pages6
JournalMaterials Transactions
Issue number10
Publication statusPublished - 2018


  • Martensitic transformation
  • Metamagnetic transition
  • MnCoGe
  • Mössbauer spectroscopy
  • Powder X-ray diffraction
  • Pulsed magnetic fields


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