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  Synthesis and Characterization of Cs1-xTi2Te2O (x ≈ 0.2): Electron Doping by Te Resulting in a Layered Metal

Valldor, M., Merz, P., Prots, Y., Watier, Y., & Schnelle, W. (2016). Synthesis and Characterization of Cs1-xTi2Te2O (x ≈ 0.2): Electron Doping by Te Resulting in a Layered Metal. Inorganic Chemistry, 55(21), 11337-11341. doi:10.1021/acs.inorgchem.6b01903.

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Item Permalink: http://hdl.handle.net/11858/00-001M-0000-002C-1003-C Version Permalink: http://hdl.handle.net/21.11116/0000-0001-5F3D-2
Genre: Journal Article

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 Creators:
Valldor, Martin1, Author              
Merz, Patrick2, Author              
Prots, Yurii3, Author              
Watier, Yves4, Author
Schnelle, Walter5, Author              
Affiliations:
1Martin Valldor, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863454              
2Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863425              
3Yuri Prots, Chemical Metal Science, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863424              
4External Organizations, ou_persistent22              
5Walter Schnelle, Inorganic Chemistry, Max Planck Institute for Chemical Physics of Solids, Max Planck Society, ou_1863441              

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 Abstract: Reacting Cs2O1.3, TiTe, TiO2, and Te under inert conditions gives powders of Cs1-xTi2Te2O (x approximate to 0.2). Small single crystals of the same phase were obtained from a CsCl salt melt in closed ampoules. This cesium dititanium ditelluride oxide (P4/mmm, a = 4.0934(3) angstrom, c = 8.9504(9) angstrom) is isostructural to CeCr2Si2C and contains layers of face-sharing trans-TiTe4O2 octahedra that are separated by Cs. As Ti occupies only one crystallographic site, its average oxidation state is +2.6, for the Cs deficit x = 0.2. The formally intermediate Ti valence state agrees well with the metallic conductivity and temperature-independent paramagnetic behavior. No superconductivity is observed down to 0.1 K in Cs0.8Ti2Te2O, but the fact that this structure type can accommodate Te2- suggests that electron doping of structurally closely related pnictide oxide superconductors, for example, BaTi2Bi2O, might be possible.

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Language(s): eng - English
 Dates: 2016-10-142016-10-14
 Publication Status: Published in print
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Title: Inorganic Chemistry
  Abbreviation : Inorg. Chem.
Source Genre: Journal
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Publ. Info: Washington, DC : American Chemical Society
Pages: - Volume / Issue: 55 (21) Sequence Number: - Start / End Page: 11337 - 11341 Identifier: ISSN: 0020-1669
CoNE: /journals/resource/0020-1669