High-pressure synthesis of ultraincompressible hard rhenium nitride pernitride Re2(N2)(N)2 stable at ambient conditions

Journal article


Publication Details

Author(s): Bykov M, Chariton S, Fei H, Fedotenko T, Aprilis G, Ponomareva AV, Tasnádi F, Abrikosov IA, Merle B, Feldner P, Vogel S, Schnick W, Prakapenka VB, Greenberg E, Hanfland M, Pakhomova A, Liermann HP, Katsura T, Dubrovinskaia N, Dubrovinsky L
Journal: Nature Communications
Publication year: 2019
Volume: 10
Journal issue: 1
ISSN: 2041-1723


Abstract

High-pressure synthesis in diamond anvil cells can yield unique compounds with advanced properties, but often they are either unrecoverable at ambient conditions or produced in quantity insufficient for properties characterization. Here we report the synthesis of metallic, ultraincompressible (K0 = 428(10) GPa), and very hard (nanoindentation hardness 36.7(8) GPa) rhenium nitride pernitride Re2(N2)(N)2. Unlike known transition metals pernitrides Re2(N2)(N)2 contains both pernitride N24− and discrete N3− anions, which explains its exceptional properties. Re2(N2)(N)2 can be obtained via a reaction between rhenium and nitrogen in a diamond anvil cell at pressures from 40 to 90 GPa and is recoverable at ambient conditions. We develop a route to scale up its synthesis through a reaction between rhenium and ammonium azide, NH4N3, in a large-volume press at 33 GPa. Although metallic bonding is typically seen incompatible with intrinsic hardness, Re2(N2)(N)2 turned to be at a threshold for superhard materials.


FAU Authors / FAU Editors

Feldner, Patrick
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)
Merle, Benoit PD Dr. habil.
Lehrstuhl für Werkstoffwissenschaften (Allgemeine Werkstoffeigenschaften)


External institutions with authors

Deutsches Elektronen-Synchrotron DESY
European Synchrotron Radiation Facility (ESRF)
Linköping University
Ludwig-Maximilians-Universität (LMU)
National University of Science and Technology "MISIS"
Universität Bayreuth
University of Chicago


How to cite

APA:
Bykov, M., Chariton, S., Fei, H., Fedotenko, T., Aprilis, G., Ponomareva, A.V.,... Dubrovinsky, L. (2019). High-pressure synthesis of ultraincompressible hard rhenium nitride pernitride Re2(N2)(N)2 stable at ambient conditions. Nature Communications, 10(1). https://dx.doi.org/10.1038/s41467-019-10995-3

MLA:
Bykov, Maxim, et al. "High-pressure synthesis of ultraincompressible hard rhenium nitride pernitride Re2(N2)(N)2 stable at ambient conditions." Nature Communications 10.1 (2019).

BibTeX: 

Last updated on 2019-16-07 at 21:08