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Title: Nonicosahedral boron allotrope synthesized at high pressure and high temperature

Journal Article · · Physical Review B
 [1];  [1];  [1];  [2];  [3];  [4];  [1];  [1]
  1. Univ. of Bayreuth (Germany)
  2. Univ. of Chicago, Argonne, IL (United States)
  3. Deutsches Elektronen-Synchrotron (DESY), Hamburg (Germany)
  4. 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
Citation Metrics:
Cited by: 10 works
Citation information provided by
Web of Science

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Cited By (1)

High-pressure synthesis of superhard and ultrahard materials journal October 2019