Mn39si9nx: epitaxial stabilization as a pathway to the formation of intermetallic nitrides

Gordon G.C. Peterson, Veronica M. Berns, Daniel C. Fredrickson*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

The realization of the full potential of nitrogen-containing solid-state materials is limited by the inert and gaseous nature of N2. In this Communication, we describe the simple synthesis yet complex structure of the new phase Mn39Si9Nx (x = 0.84). The formation of this intermetallic subnitride appears to be facilitated by the high solubility of nitrogen in manganese metal, while its structural features are guided by the complementary internal packing strains of Mn-Si and Mn-N domains, an effect known as epitaxial stabilization. These domains intergrow into a composite structure based on the interpenetration of tetrahedrally close-packed (TCP) and Mackay cluster-like modules. We anticipate that other systems combining nitrogen with the TCP packing of metals will be similarly driven toward intergrowth, opening a path to a broader family of intermetallic nitrides.

Original languageEnglish (US)
Pages (from-to)8575-8579
Number of pages5
JournalJournal of the American Chemical Society
Volume142
Issue number19
DOIs
StatePublished - May 13 2020
Externally publishedYes

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)
  • Biochemistry
  • Colloid and Surface Chemistry

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