High-pressure synthesis of ultraincompressible hard rhenium nitride pernitride Re2(N2)(N)2 stable at ambient conditions
- Univ. of Bayreuth (Germany)
- National Univ. of Science and Technology (MISIS), Moscow (Russia)
- Linköping Univ. (Sweden)
- Friedrich-Alexander-Univ., Erlangen (Germany)
- Univ. of Munich (LMU) (Germany)
- Univ. of Chicago, IL (United States). Center for Advanced Radiation Sources (CARS)
- European Synchrotron Radiation Facility (ESRF), Grenoble (France)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany). Photon Science
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 = 28(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.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
- Sponsoring Organization:
- German Research Foundation (DFG); German Federal Ministry of Education and Research (BMBF); Fonds der Chemischen Industrie (FCI); National Science Foundation (NSF); USDOE Office of Science (SC), Basic Energy Sciences (BES). Chemical Sciences, Geosciences, and Biosciences Division; Russian Science Foundation (RSF); Ministry of Education and Science of the Russian Federation; Swedish Research Council (VR); Swedish Government Strategic Research Area in Materials Science on Functional Materials; VINN Excellence Center Functional Nanoscale Materials (FunMat-2); European Research Council (ERC)
- Grant/Contract Number:
- 5K16WC1; EAR-1634415; FG02-94ER14466; AC02-06CH11357; 2015-04391; SFO-Mat-LiU No. 2009-00971; 2016–05156; 787527
- OSTI ID:
- 1542989
- Journal Information:
- Nature Communications, Vol. 10, Issue 1; ISSN 2041-1723
- Publisher:
- Nature Publishing GroupCopyright Statement
- Country of Publication:
- United States
- Language:
- ENGLISH
Web of Science
Single-crystal diffractometer coupled with double-sided laser heating system at the Extreme Conditions Beamline P02.2 at PETRAIII
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journal | July 2019 |
Single-crystal diffractometer coupled with double-sided laser heating system at the Extreme Conditions Beamline P02.2 at PETRAIII
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text | January 2019 |
High-pressure synthesis of superhard and ultrahard materials
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journal | October 2019 |
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