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Title: Coexistence of multiple metastable polytypes in rhombohedral bismuth

Journal Article · · Scientific Reports
DOI:https://doi.org/10.1038/srep20337· OSTI ID:1249226
 [1];  [1];  [1];  [2];  [1];  [1];  [1];  [3];  [1];  [1]
  1. Yanshan Univ., Hebei (China)
  2. Carnegie Inst. of Washington, Argonne, IL (United States)
  3. Univ. of Chicago, Argonne, IL (United States)

Derivative structural polytypes coexisting with the rhombohedral A7 structure of elemental bismuth (Bi) have been discovered at ambient condition, based on microstructure analyses of pure Bi samples treated under high pressure and high temperature conditions. Three structures with atomic positions close to those of the A7 structure have been identified through first-principles calculations, showing these polytypes energetically comparable to the A7 structure under ambient condition. Simulated diffraction data are in excellent agreement with the experimental observations. We argue that previously reported some variations of physical properties (e.g., density, electrical conductivity and magnetism) in bismuth could be due to the formation of these polytypes. The coexistence of metastable derivative structural polytypes may be a widely occurring phenomenon in other elemental materials.

Research Organization:
Argonne National Laboratory (ANL), Argonne, IL (United States)
Sponsoring Organization:
National Natural Science Foundation of China (NSFC); Ministry of Science and Technology of China; National Science Foundation (NSF)
Grant/Contract Number:
51121061; EAR-0968456; 2011CB808205; 2010CB731605; 51332005; 51172197; 11025418; 91022029
OSTI ID:
1249226
Journal Information:
Scientific Reports, Vol. 6, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
ENGLISH
Citation Metrics:
Cited by: 11 works
Citation information provided by
Web of Science

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Cited By (3)

Insights into the structures and electronic properties of Cun+1 μ and CunS μ (n = 1–12; μ = 0, ±1) clusters journal May 2017
Deep melting reveals liquid structural memory and anomalous ferromagnetism in bismuth journal March 2017
Evidence for bulk superconductivity in pure bismuth single crystals at ambient pressure journal December 2016

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