| Download | - View final version: In situ powder x-ray diffraction, synthesis, and magnetic properties of the defect zircon structure ScVO4−x (PDF, 1.6 MiB)
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| DOI | Resolve DOI: https://doi.org/10.1021/ic900927j |
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| Author | Search for: Shafi, Shahid P.; Search for: Kotyk, Matthew W.; Search for: Cranswick, Lachlan M. D.1; Search for: Michaelis, Vladimir K.; Search for: Kroeker, Scott; Search for: Bieringer, Mario |
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| Affiliation | - National Research Council Canada. NRC Canadian Neutron Beam Centre
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| Format | Text, Article |
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| Abstract | We report the formation pathway of ScVO4 zircon from ScVO3 bixbyite with emphasis on the synthesis and stability of the novel intermediate defect zircon phase ScVO4−x (0.0 < x ≤ 0.1). The formation pathway has been investigated by means of thermogravimetric/differential thermal analysis and in situ powder X-ray diffraction. The oxidation of ScVO3 to ScVO4 involves two intermediates of composition ScVO3.5+y (0.00 ≤ y ≤ 0.22) and the novel phase ScVO4−x. ScVO4−x crystallizes in the defect zircon structure in space group I41/amd (141) with a = 6.77761(5) Å and c = 6.14045(8) Å. Oxygen defect concentrations in bulk ScVO4−x samples range from 0.0 < x ≤ 0.1. ScVO4−x is compared with the fully oxidized zircon structure ScVO4 using powder X-ray diffraction, neutron diffraction, and bulk magnetic susceptibility data as well as 45Sc and 51V solid state NMR spectroscopy. ScVO4−x can only be obtained by oxidation of ScVO3 or ScVO3.5+y while the reduction of ScVO4 does not yield the novel defect structure. Mechanistic insights into the oxidative formation of ScVO4 via the defect structure are presented. |
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| Publication date | 2009-11-16 |
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| Publisher | American Chemical Society |
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| In | |
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| Language | English |
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| Peer reviewed | Yes |
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| NPARC number | 23005016 |
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| Export citation | Export as RIS |
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| Report a correction | Report a correction (opens in a new tab) |
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| Record identifier | 6c061040-b4f6-440e-8318-5f2e6a8fa268 |
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| Record created | 2019-02-12 |
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| Record modified | 2020-05-30 |
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