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Syntheses, crystal structures, and characterization of two new Tl +-Cu 2+-Te 6+ oxides: Tl 4CuTeO 6 and Tl 6CuTe 2O 10

Yeon, J., Kim, S.-H., Green, M.A., Bhatti, K.P., Leighton, C., Halasyamani, P.S. (2012) Syntheses, crystal structures, and characterization of two new Tl +-Cu 2+-Te 6+ oxides: Tl 4CuTeO 6 and Tl 6CuTe 2O 10. Journal of Solid State Chemistry, 196 . pp. 607-613. ISSN 00224596 (ISSN). (doi:10.1016/j.jssc.2012.07.012) (The full text of this publication is not currently available from this repository. You may be able to access a copy if URLs are provided)

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Abstract

Crystals and polycrystalline powders of two new oxide materials, Tl 4CuTeO6 and Tl 6CuTe 2O 10, have been synthesized by hydrothermal and solid-state methods. The materials were structurally characterized by single-crystal X-ray diffraction. Tl 4CuTeO6 and Tl 6CuTe 2O 10 exhibit one dimensional anionic slabs of [CuTeO 6] 4� and [CuTe 2O 10] 6�, respectively. Common to both slabs is the occurrence of Cu 2+O 4 distorted squares and Te 6+O 6 octahedra. The slabs are separated by Tl + cations. For Tl 4CuTeO 6, magnetic measurements indicate a maximum at �8 K in the temperature dependence of the susceptibility. Low temperature neutron diffraction data confirm no long-range magnetic ordering occurs and the susceptibility was adequately accounted for by fits to a Heisenberg alternating chain model. For Tl 6CuTe 2O 10 on the other hand, magnetic measurements revealed paramagnetism with no evidence of long-range magnetic ordering. Infrared, UV-vis spectra, thermogravimetric, and differential thermal analyses are also reported. Crystal data: Tl 4CuTeO 6, Triclinic, space group P-1 (No. 2), a=5.8629(8)A, b=8.7848(11) A, c=9.2572(12)A, α = 66.0460(10), β = 74.2010(10), γ = 79.254(2), V=417.70(9) A 3, andZ=2; Tl 6CuTe 2O 10, orthorhombic, space group Pnma (No. 62), a=10.8628(6) �, b=11.4962(7)�, c=10.7238(6) �, V= 1339.20(13) � 3, and Z=4. © 2012 Elsevier Inc. All rights reserved.

Item Type: Article
DOI/Identification number: 10.1016/j.jssc.2012.07.012
Additional information: Unmapped bibliographic data: LA - English [Field not mapped to EPrints] J2 - J. Solid State Chem. [Field not mapped to EPrints] AD - Department of Chemistry, University of Houston, 136 Fleming Building, Houston, TX 77204-5003, United States [Field not mapped to EPrints] AD - Department of Materials Science and Engineering, University of Maryland, College Park, MD 20742-2115, United States [Field not mapped to EPrints] AD - NIST Center for Neutron Research, National Institute of Standard and Technology, 100 Bureau Drive, Gaithersburg, MD 20899-6103, United States [Field not mapped to EPrints] AD - Department of Chemical Engineering and Materials Science, University of Minnesota, Minneapolis, MN 55455-0132, United States [Field not mapped to EPrints] DB - Scopus [Field not mapped to EPrints]
Uncontrolled keywords: Crystal structures, Magnetic interactions, Oxides, Thallium, Alternating chains, Crystal data, Heisenberg, Long range magnetic ordering, Low temperatures, Magnetic interactions, Neutron diffraction data, Oxide materials, Polycrystalline powders, Single crystal x-ray diffraction, Solid state method, Space Groups, Temperature dependence, Thermogravimetric, UV-vis spectra, Antiferromagnetic materials, Crystal structure, Differential thermal analysis, Magnetic variables measurement, Neutron diffraction, Oxides, Paramagnetism, Polycrystalline materials, Thallium, X ray diffraction, Characterization
Subjects: Q Science > QC Physics > QC173.45 Condensed Matter
Q Science > QD Chemistry > QD478 Solid State Chemistry
Divisions: Faculties > Sciences > School of Physical Sciences > Functional Materials Group
Depositing User: Giles Tarver
Date Deposited: 14 Oct 2015 11:22 UTC
Last Modified: 29 May 2019 16:08 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/50962 (The current URI for this page, for reference purposes)
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