title: Terapascal static pressure generation with ultrahigh yield strength nanodiamond.
abstract: Studies of materials' properties at high and ultrahigh pressures lead to discoveries of unique physical and chemical phenomena and a deeper understanding of matter. In high-pressure research, an achievable static pressure limit is imposed by the strength of available strong materials and design of high-pressure devices. Using a high-pressure and high-temperature technique, we synthesized optically transparent microballs of bulk nanocrystalline diamond, which were found to have an exceptional yield strength (~460 GPa at a confining pressure of ~70 GPa) due to the unique microstructure of bulk nanocrystalline diamond. We used the nanodiamond balls in a double-stage diamond anvil cell high-pressure device that allowed us to generate static pressures beyond 1 TPa, as demonstrated by synchrotron x-ray diffraction. Outstanding mechanical properties (strain-dependent elasticity, very high hardness, and unprecedented yield strength) make the nanodiamond balls a unique device for ultrahigh static pressure generation. Structurally isotropic, homogeneous, and made of a low-Z material, they are promising in the field of x-ray optical applications.
authors.affiliation: Material Physics and Technology at Extreme Conditions, Laboratory of Crystallography, University of Bayreuth, D-95440 Bayreuth, Germany.
authors.forename: Natalia
authors.initials: N
authors.lastname: Dubrovinskaia
authors.affiliation: Bayerisches Geoinstitut, University of Bayreuth, D-95440 Bayreuth, Germany.
authors.forename: Leonid
authors.initials: L
authors.lastname: Dubrovinsky
authors.affiliation: Material Physics and Technology at Extreme Conditions, Laboratory of Crystallography, University of Bayreuth, D-95440 Bayreuth, Germany.; Bayerisches Geoinstitut, University of Bayreuth, D-95440 Bayreuth, Germany.
authors.forename: Natalia A
authors.initials: NA
authors.lastname: Solopova
authors.affiliation: Electron Microscopy for Materials Science (EMAT), University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
authors.forename: Artem
authors.initials: A
authors.lastname: Abakumov
authors.affiliation: Electron Microscopy for Materials Science (EMAT), University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerp, Belgium.
authors.forename: Stuart
authors.initials: S
authors.lastname: Turner
authors.affiliation: European Synchrotron Radiation Facility, BP 220 F-38043 Grenoble Cedex, France.
authors.forename: Michael
authors.initials: M
authors.lastname: Hanfland
authors.affiliation: Bayerisches Geoinstitut, University of Bayreuth, D-95440 Bayreuth, Germany.
authors.forename: Elena
authors.initials: E
authors.lastname: Bykova
authors.affiliation: Bayerisches Geoinstitut, University of Bayreuth, D-95440 Bayreuth, Germany.
authors.forename: Maxim
authors.identifier: 0000-0003-0248-1728
authors.initials: M
authors.lastname: Bykov
authors.affiliation: Center for Advanced Radiation Sources, University of Chicago, Chicago, IL 60437, USA.
authors.forename: Clemens
authors.identifier: 0000-0002-9556-1032
authors.initials: C
authors.lastname: Prescher
authors.affiliation: Center for Advanced Radiation Sources, University of Chicago, Chicago, IL 60437, USA.
authors.forename: Vitali B
authors.initials: VB
authors.lastname: Prakapenka
authors.affiliation: Bayerisches Geoinstitut, University of Bayreuth, D-95440 Bayreuth, Germany.
authors.forename: Sylvain
authors.initials: S
authors.lastname: Petitgirard
authors.affiliation: Material Physics and Technology at Extreme Conditions, Laboratory of Crystallography, University of Bayreuth, D-95440 Bayreuth, Germany.; Bayerisches Geoinstitut, University of Bayreuth, D-95440 Bayreuth, Germany.
authors.forename: Irina
authors.initials: I
authors.lastname: Chuvashova
authors.affiliation: Institute for Photon Science and Synchrotron Radiation, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany.
authors.forename: Biliana
authors.initials: B
authors.lastname: Gasharova
authors.affiliation: ANKA Synchrotron Radiation Facility, Karlsruhe Institute of Technology, P.O. Box 3640, 76021 Karlsruhe, Germany.
authors.forename: Yves-Laurent
authors.initials: YL
authors.lastname: Mathis
authors.affiliation: Immanuel Kant Baltic Federal University, RU-236041 Kaliningrad, Russia.
authors.forename: Petr
authors.identifier: 0000-0003-2322-5176
authors.initials: P
authors.lastname: Ershov
authors.affiliation: European Synchrotron Radiation Facility, BP 220 F-38043 Grenoble Cedex, France.
authors.forename: Irina
authors.identifier: 0000-0003-3481-2202
authors.initials: I
authors.lastname: Snigireva
authors.affiliation: European Synchrotron Radiation Facility, BP 220 F-38043 Grenoble Cedex, France.; Immanuel Kant Baltic Federal University, RU-236041 Kaliningrad, Russia.
authors.forename: Anatoly
authors.identifier: 0000-0002-8892-1925
authors.initials: A
authors.lastname: Snigirev
mesh_terms: D006244:Hardness; D046529:Microscopy, Electron, Transmission; D058612:Nanodiamonds / Q000737:chemistry*; D011312:Pressure; D013696:Temperature; D014961:X-Ray Diffraction
chemical_list: D058612:Nanodiamonds
keywords: Ultra-high static pressure generation; double-stage diamond anvil cell; nanodiamond; terapascal pressures