Magnetic, Electronic, and Mechanical Properties of Bulk ε-Fe₂N Synthesized at High Pressures.

ABSTRACT: We sintered bulk trigonal ε-Fe₂N (space group: P312) with the high-pressure and high-temperature method. Structural refinements by the Rietveld method result in a trigonal unit cell with parameters of a = 4.7767(1) Å and c = 4.4179(3) Å. ε-Fe₂N is ferromagnetic with a Curie temperature of ∼250 K, a saturation magnetization (M _s) value of up to 1.2 μ_B/formula units (f.u.), and comparatively low coercive field. The Vickers hardness was measured, and the results showed that the asymptotic hardness of bulk ε-Fe₂N is about 6.5 GPa with a load of 1000 g. Thermogravimetric (TG) analysis shows that ε-Fe₂N is thermally stable below 670 K. ε-Fe₂N exhibits good metal conductivity, and the electron

SUBMITTER: Ma T 

PROVIDER: S-EPMC8154168 | biostudies-literature | 2021 May

REPOSITORIES: biostudies-literature