High-Pressure NiAs-Type Modification of FeN

Clark, William P.; Steinberg, Simon; Dronskowski, Richard; McCammon, Catherine; Kupenko, Ilya; Bykov, Maxim; Dubrovinsky, Leonid; Akselrud, Lev G.; Schwarz, Ulrich; Niewa, Rainer

doi:10.1002/anie.201702440

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High-Pressure NiAs-Type Modification of FeN

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Akselrud, Lev G.
Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Schwarz, Ulrich
Ulrich Schwarz, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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Citation

Clark, W. P., Steinberg, S., Dronskowski, R., McCammon, C., Kupenko, I., Bykov, M., et al. (2017). High-Pressure NiAs-Type Modification of FeN. Angewandte Chemie International Edition in English, 56(25), 7302-7306. doi:10.1002/anie.201702440.

Cite as: https://hdl.handle.net/11858/00-001M-0000-002D-85AC-1

Abstract

The combination of laser-heated diamond anvil cells and synchrotron Mossbauer source spectroscopy were used to investigate high-temperature high-pressure chemical reactions of iron and iron nitride Fe2N with nitrogen. At pressures between 10 and 45 GPa, significant magnetic hyperfine splitting indicated compound formation after annealing at 1300 K. Subsequent in situ X-ray diffraction reveals a new modification of FeN with NiAs-type crystal structure, as also rationalized by first-principles total-energy and chemical-bonding studies.