Nonicosahedral boron allotrope synthesized at high pressure and high temperature
- Univ. of Bayreuth (Germany)
- Univ. of Chicago, Argonne, IL (United States)
- Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
- European Synchrotron Radiation Facility, Grenoble Cedex (France)
Theoretical predictions of pressure-induced phase transformations often become long-standing enigmas because of limitations of contemporary available experimental possibilities. Hitherto the existence of a nonicosahedral boron allotrope has been one of them. Here we report on a nonicosahedral boron allotrope, which we denoted as ζ -B, with the orthorhombic α-Ga-type structure (space group Cmce) synthesized in a diamond-anvil cell at extreme high-pressure high-temperature conditions (115 GPa and 2100 K). The structure of ζ -B was solved using single-crystal synchrotron x-ray diffraction and its compressional behavior was studied in the range of very high pressures (115–135 GPa). Here,experimental validation of theoretical predictions reveals the degree of our up-to-date comprehension of condensed matter and promotes further development of solid-state physics and chemistry.
- Research Organization:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; National Science Foundation (NSF); German Research Foundation (DFG)
- Grant/Contract Number:
- AC02-06CH11357; FG02-94ER14466; EAR-1128799; 5K13WC3; DU 954-6/1; DU 954-6/2; DU 954-8/1; DU 393-9/1; DU 393-10/1
- OSTI ID:
- 1357640
- Alternate ID(s):
- OSTI ID: 1357309
- Journal Information:
- Physical Review B, Vol. 95, Issue 18; ISSN 2469-9950
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- ENGLISH
Web of Science
High-pressure synthesis of superhard and ultrahard materials
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journal | October 2019 |
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Related Subjects
zeta-boron
gamma-boron
betta-boron
single crystal X-ray diffraction
alfa-Ga structural type
high-pressure high-temperature phase transition
pressure effects
structural properties
crystal structures
polycrystalline materials
single crystal materials
pressure techniques
X-ray diffraction
X-ray powder diffraction