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

Research output: Contribution to journalArticlepeer-review

6 Citations (Scopus)

Abstract

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
Volume59
Issue number10
DOIs
Publication statusPublished - 2018

Keywords

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

ASJC Scopus subject areas

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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