High-pressure solid-state metathesis synthesis of ternary iron-based metal nitrides

Shang Pan Gao, Li Lei, Qi Wei Hu, Lei Ming Fang, Xian Long Wang, Hiroaki Ohfuji, Yohei Kojima, Lei Lei Zhang, Li Jie Tan, Zhi Zeng, Fang Peng, Duan Wei He, Tetsuo Irifune

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Ternary ε-Fe3-xMxN1+δ (M=Co,Ni) were synthesized as spherical bulk materials with variable components through composite high-pressure solid-state metathesis (HPSSM) reactions under 5 GPa and at 1673 K, employing diversity binary metal oxides (Fe2O3, CoO, NiO) and hBN as the reaction precursors. The structural characterizations of the as-prepared iron-based metal nitrides were determined by X-ray powder diffraction (XPD), field-emission scanning electronic microscopy (FE-SEM) and high-resolution transmission electron microscope (HRTEM), etc. First-principles calculations were used to explore the effect of pressure on the reaction enthalpy ΔH in HPSSM. Our results show that the high-pressure confinement environment is favorable for the synthesis of high-quality metal nitrides, and the HPSSM reaction is an effective synthetic route to the bulk iron-based metal nitrides.

Original languageEnglish
Pages (from-to)265-270
Number of pages6
JournalGaoya Wuli Xuebao/Chinese Journal of High Pressure Physics
Volume30
Issue number4
DOIs
Publication statusPublished - 2016 Aug 25
Externally publishedYes

Keywords

  • High-pressure solid-state metathesis reaction (HPSSM)
  • Iron-based metal nitride
  • Reaction enthalpy

ASJC Scopus subject areas

  • Condensed Matter Physics

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