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Open AccessArticle

Ferromagnetic ε-Fe2MnN: High-Pressure Synthesis, Hardness and Magnetic Properties

Max-Planck-Institut für Chemische Physik fester Stoffe, Nöthnitzer Straße 40, 01187 Dresden, Germany
School of Materials Science and Engineering, Shanghai University, Shanghai 200444, China
Institut für Anorganische Chemie, Universität Stuttgart, Pfaffenwaldring 55, 70569 Stuttgart, Germany
Present address Departamento de Química, Facultad de Ciencias, Universidad Católica del Norte, Casa Central. Angamos 0610, 1240000 Antofagasta, Chile
Author to whom correspondence should be addressed.
Materials 2019, 12(12), 1993;
Received: 31 May 2019 / Revised: 17 June 2019 / Accepted: 19 June 2019 / Published: 21 June 2019
(This article belongs to the Section Materials Chemistry)
The iron manganese nitride Fe2MnN was obtained by high-pressure–high-temperature synthesis from ζ-Fe2N and elemental Mn at 15(2) GPa and 1573(200) K. The phase crystallizes isostructural to binary ε-Fe3N. In comparison to the corresponding binary iron nitride, the microhardness of ε-Fe2MnN is reduced to 6.2(2) GPa. Above about 800 K the ternary compound decomposes exothermally under loss of nitrogen. ε-Fe2MnN is ferromagnetic with a Curie temperature of roughly 402 K. View Full-Text
Keywords: iron nitride; manganese; ferromagnet; high-pressure synthesis iron nitride; manganese; ferromagnet; high-pressure synthesis
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MDPI and ACS Style

Schwarz, U.; Guo, K.; Clark, W.P.; Burkhardt, U.; Bobnar, M.; Castillo, R.; Akselrud, L.; Niewa, R. Ferromagnetic ε-Fe2MnN: High-Pressure Synthesis, Hardness and Magnetic Properties. Materials 2019, 12, 1993.

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