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High-Pressure NiAs-Type Modification of FeN.

ABSTRACT: The combination of laser-heated diamond anvil cells and synchrotron Mössbauer source spectroscopy were used to investigate high-temperature high-pressure chemical reactions of iron and iron nitride Fe2 N 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.

SUBMITTER: Clark WP

PROVIDER: S-EPMC5488211 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature

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High-Pressure NiAs-Type Modification of FeN.

Clark William P WP Steinberg Simon S Dronskowski Richard R McCammon Catherine C Kupenko Ilya I Bykov Maxim M Dubrovinsky Leonid L Akselrud Lev G LG Schwarz Ulrich U Niewa Rainer R

Angewandte Chemie (International ed. in English) 20170518 25

The combination of laser-heated diamond anvil cells and synchrotron Mössbauer source spectroscopy were used to investigate high-temperature high-pressure chemical reactions of iron and iron nitride Fe2 N 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-pr ...[more]

PMID: 28517174

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