The h–SbxWO3+2x Oxygen Excess Antimony Tungsten Bronze
- Univ. of Zurich, Zurich (Switzerland)
- Princeton Univ., Princeton, NJ (United States)
- Brookhaven National Lab. (BNL), Upton, NY (United States)
Here, we describe the previously unreported oxygen excess hexagonal antimony tungsten bronze with composition Sb0.5W3O10, in the following denoted as h–SbxWO3+2x with x = 0.167, to demonstrate its analogy to classical AxWO3 tungsten bronzes. This compound forms in a relatively narrow temperature range between 580 °C < T < 620 °C. It was obtained as a dark–blue polycrystalline powder, and as thin, needle–shaped, blue single crystals. h–SbxWO3+2x crystallizes in the hexagonal space group P6/mmm with the cell parameters a=7.4369(4) Å and c=3.7800(2) Å. The antimony and excess oxygen occupy the hexagonal channels within the network of corner–sharing WO6 octahedra. h–SbxWO3+2x has a resistivity of ρ300 K≈1.28 mΩ cm at room temperature, with little if any temperature–dependence on cooling. DFT calculations on a simplified model for this compound find a metallic–like electronic structure with the Fermi level falling within rather flat bands, especially around the Γ point.
- Research Organization:
- Brookhaven National Laboratory (BNL), Upton, NY (United States); Princeton Univ., NJ (United States)
- Sponsoring Organization:
- USDOE Office of Science (SC), Basic Energy Sciences (BES)
- Grant/Contract Number:
- SC0012704; FG02-98ER45706
- OSTI ID:
- 1507113
- Alternate ID(s):
- OSTI ID: 1490115; OSTI ID: 1595066
- Report Number(s):
- BNL-211545-2019-JAAM
- Journal Information:
- Chemistry - A European Journal, Vol. 25, Issue 8; ISSN 0947-6539
- Publisher:
- ChemPubSoc EuropeCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Web of Science
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