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Title: Discovery of FeBi 2

Abstract

Recent advances in high-pressure techniques offer chemists access to vast regions of uncharted synthetic phase space, expanding our experimental reach to pressures comparable to the core of the Earth. These newfound capabilities enable us to revisit simple binary systems in search of compounds that for decades have remained elusive. The most tantalizing of these targets are systems in which the two elements in question do not interact even as molten liquids—so-called immiscible systems. As a prominent example, immiscibility between iron and bismuth is so severe that no material containing Fe–Bi bonds is known to exist. The elusiveness of Fe–Bi bonds has a myriad of consequences; crucially, it precludes completing the iron pnictide superconductor series. Herein we report the first iron–bismuth binary compound, FeBi2, featuring the first Fe–Bi bond in the solid state. We employed geologically relevant pressures, similar to the core of Mars, to access FeBi2, which we synthesized at 30 GPa and 1500 K. The compound crystallizes in the Al2Cu structure type (space group I4/mcm) with a = 6.3121(3) Å and c = 5.4211(4) Å. The new binary intermetallic phase persists from its formation pressure of 30 GPa down to 3 GPa. The existence of this phase at lowmore » pressures suggests that it might be quenchable to ambient pressure at low temperatures. These results offer a pathway toward the realization of new exotic materials.« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
Argonne National Laboratory (ANL), Argonne, IL (United States). Advanced Photon Source (APS)
Sponsoring Org.:
USDOE National Nuclear Security Administration (NNSA)
OSTI Identifier:
1338993
Resource Type:
Journal Article
Journal Name:
ACS Central Science
Additional Journal Information:
Journal Volume: 2; Journal Issue: 11; Journal ID: ISSN 2374-7943
Publisher:
American Chemical Society (ACS)
Country of Publication:
United States
Language:
ENGLISH
Subject:
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY

Citation Formats

Walsh, James P. S., Clarke, Samantha M., Meng, Yue, Jacobsen, Steven D., and Freedman, Danna E. Discovery of FeBi 2. United States: N. p., 2016. Web. doi:10.1021/acscentsci.6b00287.
Walsh, James P. S., Clarke, Samantha M., Meng, Yue, Jacobsen, Steven D., & Freedman, Danna E. Discovery of FeBi 2. United States. https://doi.org/10.1021/acscentsci.6b00287
Walsh, James P. S., Clarke, Samantha M., Meng, Yue, Jacobsen, Steven D., and Freedman, Danna E. 2016. "Discovery of FeBi 2". United States. https://doi.org/10.1021/acscentsci.6b00287.
@article{osti_1338993,
title = {Discovery of FeBi 2},
author = {Walsh, James P. S. and Clarke, Samantha M. and Meng, Yue and Jacobsen, Steven D. and Freedman, Danna E.},
abstractNote = {Recent advances in high-pressure techniques offer chemists access to vast regions of uncharted synthetic phase space, expanding our experimental reach to pressures comparable to the core of the Earth. These newfound capabilities enable us to revisit simple binary systems in search of compounds that for decades have remained elusive. The most tantalizing of these targets are systems in which the two elements in question do not interact even as molten liquids—so-called immiscible systems. As a prominent example, immiscibility between iron and bismuth is so severe that no material containing Fe–Bi bonds is known to exist. The elusiveness of Fe–Bi bonds has a myriad of consequences; crucially, it precludes completing the iron pnictide superconductor series. Herein we report the first iron–bismuth binary compound, FeBi2, featuring the first Fe–Bi bond in the solid state. We employed geologically relevant pressures, similar to the core of Mars, to access FeBi2, which we synthesized at 30 GPa and 1500 K. The compound crystallizes in the Al2Cu structure type (space group I4/mcm) with a = 6.3121(3) Å and c = 5.4211(4) Å. The new binary intermetallic phase persists from its formation pressure of 30 GPa down to 3 GPa. The existence of this phase at low pressures suggests that it might be quenchable to ambient pressure at low temperatures. These results offer a pathway toward the realization of new exotic materials.},
doi = {10.1021/acscentsci.6b00287},
url = {https://www.osti.gov/biblio/1338993}, journal = {ACS Central Science},
issn = {2374-7943},
number = 11,
volume = 2,
place = {United States},
year = {Wed Oct 26 00:00:00 EDT 2016},
month = {Wed Oct 26 00:00:00 EDT 2016}
}

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Works referencing / citing this record:

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journal, August 2017


[Co@Sn 6 Sb 6 ] 3− : Ein endohedraler 12‐Atom‐Cluster mit einem nicht‐zentrierten inneren Atom
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