High‐Pressure Synthesis of Ultra‐Incompressible, Hard and Superconducting Tungsten Nitrides

Liang, Akun; Osmond, Israel; Krach, Georg; Shi, Lan‐Ting; Brüning, Lukas; Ranieri, Umbertoluca; Spender, James; Tasnadi, Ferenc; Massani, Bernhard; Stevens, Callum R.; McWilliams, Ryan Stewart; Bright, Eleanor Lawrence; Giordano, Nico; Gallego‐Parra, Samuel; Yin, Yuqing; Aslandukov, Andrey; Akbar, Fariia Iasmin; Gregoryanz, Eugene; Huxley, Andrew; Peña‐Alvarez, Miriam; Si, Jian‐Guo; Schnick, Wolfgang; Bykov, Maxim; Trybel, Florian; Laniel, Dominique

doi:10.1002/adfm.202313819

Title: High‐Pressure Synthesis of Ultra‐Incompressible, Hard and Superconducting Tungsten Nitrides

Journal Article · Wed May 15 00:00:00 UTC 2024 · Advanced Functional Materials

DOI: https://doi.org/10.1002/adfm.202313819 · OSTI ID:2350853

^[1];

^[1]; Krach, Georg ^[2]; Shi, Lan‐Ting ^[3]; Brüning, Lukas ^[4]; Ranieri, Umbertoluca ^[1]; Spender, James ^[1]; Tasnadi, Ferenc ^[5]; Massani, Bernhard ^[1]; Stevens, Callum R. ^[1]; McWilliams, Ryan Stewart ^[1]; Bright, Eleanor Lawrence ^[6]; Giordano, Nico ^[7];

^[6]; Yin, Yuqing ^[8]; Aslandukov, Andrey ^[8]; Akbar, Fariia Iasmin ^[8];

^[9]; Huxley, Andrew ^[1];

^[1] more »

Centre for Science at Extreme Conditions and School of Physics and Astronomy University of Edinburgh Edinburgh EH8 9YL UK
Department of Chemistry University of Munich (LMU) 81377 Munich Germany
Spallation Neutron Source Science Center Dongguan 523000 P. R. China
Institute for Inorganic Chemistry University of Cologne 50923 Cologne Germany
Department of Physics, Chemistry and Biology (IFM) Linköping University Linköping 58183 Sweden
European Synchrotron Radiation Facility Grenoble 38000 France
Photon Science Deutsches Elektronen‐Synchrotron 22607 Hamburg Germany
Material Physics and Technology at Extreme Conditions Laboratory of Crystallography University of Bayreuth 95447 Bayreuth Germany
Centre for Science at Extreme Conditions and School of Physics and Astronomy University of Edinburgh Edinburgh EH8 9YL UK, Center for High‐Pressure Science and Technology Advanced Research Shanghai 201203 P. R. China, Key Laboratory of Materials Physics Institute of Solid State Physics Chinese Academy of Sciences (CAS) Hefei Anhui 230031 P. R. China
Institute for Inorganic Chemistry University of Cologne 50923 Cologne Germany, Institute of Inorganic and Analytical Chemistry Johann Wolfgang Goethe Universität 60438 Frankfurt Germany

Abstract Transition metal nitrides, particularly those of 5 d metals, are known for their outstanding properties, often relevant for industrial applications. Among these metal elements, tungsten is especially attractive given its low cost. In this high‐pressure investigation of the W–N system, two novel ultra‐incompressible tungsten nitride superconductors, namely W ₂ N ₃ and W ₃ N ₅ , are successfully synthesized at 35 and 56 GPa, respectively, through a direct reaction between N ₂ and W in laser‐heated diamond anvil cells. Their crystal structure is determined using synchrotron single‐crystal X‐ray diffraction. While the W ₂ N ₃ solid's sole constituting nitrogen species are N ^3‐ units, W ₃ N ₅ features both discrete N ^3‐ as well as N ₂ ^4‐ pernitride anions. The bulk modulus of W ₂ N ₃ and W ₃ N ₅ is experimentally determined to be 380(3) and 406(7) GPa, and their ultra‐incompressible behavior is rationalized by their constituting WN ₇ polyhedra and their linkages. Importantly, both W ₂ N ₃ and W ₃ N ₅ are recoverable to ambient conditions and stable in air. Density functional theory calculations reveal W ₂ N ₃ and W ₃ N ₅ to have a Vickers hardness of 30 and 34 GPa, and superconducting transition temperatures at ambient pressure (50 GPa) of 11.6 K (9.8 K) and 9.4 K (7.2 K), respectively. Additionally, transport measurements performed at 50 GPa on W ₂ N ₃ corroborate with the calculations.

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Research Organization:: Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)

Sponsoring Organization:: USDOE

Grant/Contract Number:: AC02-06CH11357

OSTI ID:: 2350853

Journal Information:: Advanced Functional Materials, Journal Name: Advanced Functional Materials Journal Issue: 32 Vol. 34; ISSN 1616-301X

Publisher:: Wiley Blackwell (John Wiley & Sons)Copyright Statement

Country of Publication:: Germany

Language:: English

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