TY - JOUR
T1 - Mn39si9nx
T2 - epitaxial stabilization as a pathway to the formation of intermetallic nitrides
AU - Peterson, Gordon G.C.
AU - Berns, Veronica M.
AU - Fredrickson, Daniel C.
N1 - Funding Information:
We are grateful to Ashfia Huq and Katherine Page for discussions and preliminary experiments on the potential for neutron diffraction to distinguish N from C and O in the title phase, Bil Schneider for assistance with the EDS measurements, and the 11-BM mail-in program for collecting synchrotron powder diffraction data. We gratefully acknowledge the financial support of the Department of Energy, Office of Basic Energy Sciences through Grant DE-SC0018938. This work includes calculations that used computing resources supported by NSF Grant CHE-0840494. Use of the Advanced Photon Source at Argonne National Laboratory was supported by the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract No. DE-AC02-06CH11357. A portion of this research used resources at the Spallation Neutron Source, a DOE Office of Science User Facility operated by the Oak Ridge National Laboratory.
Funding Information:
Department of Energy, Office of Basic Energy Sciences through Grant DE-SC0018938
Publisher Copyright:
© 2020 American Chemical Society.
PY - 2020/5/13
Y1 - 2020/5/13
N2 - 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.
AB - 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.
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U2 - 10.1021/jacs.0c01716
DO - 10.1021/jacs.0c01716
M3 - Article
C2 - 32349483
AN - SCOPUS:85085755839
SN - 0002-7863
VL - 142
SP - 8575
EP - 8579
JO - Journal of the American Chemical Society
JF - Journal of the American Chemical Society
IS - 19
ER -