5 years ago

High-Pressure NiAs-Type Modification of FeN

High-Pressure NiAs-Type Modification of FeN
Lev G. Akselrud, Leonid Dubrovinsky, Ilya Kupenko, Rainer Niewa, Richard Dronskowski, Maxim Bykov, Ulrich Schwarz, William P. Clark, Simon Steinberg, Catherine McCammon
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 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. Pressing for change: The reaction of 57Fe and ζ-57Fe2N with nitrogen, above 1000 K and up to 45 GPa, is investigated using laser-heated diamond anvil cells and synchrotron Mössbauer source spectroscopy. After annealing at pressures larger than 10 GPa a new phase is observed, which shows pronounced magnetic hyperfine splitting. X-ray diffraction measurements using synchrotron radiation are consistent with NiAs-type FeN remaining present down to atmospheric pressure.

Publisher URL: http://onlinelibrary.wiley.com/resolve/doi

DOI: 10.1002/anie.201702440

You might also like
Discover & Discuss Important Research

Keeping up-to-date with research can feel impossible, with papers being published faster than you'll ever be able to read them. That's where Researcher comes in: we're simplifying discovery and making important discussions happen. With over 19,000 sources, including peer-reviewed journals, preprints, blogs, universities, podcasts and Live events across 10 research areas, you'll never miss what's important to you. It's like social media, but better. Oh, and we should mention - it's free.

  • Download from Google Play
  • Download from App Store
  • Download from AppInChina

Researcher displays publicly available abstracts and doesn’t host any full article content. If the content is open access, we will direct clicks from the abstracts to the publisher website and display the PDF copy on our platform. Clicks to view the full text will be directed to the publisher website, where only users with subscriptions or access through their institution are able to view the full article.