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Title: Nanoscale building blocks in a novel lithium arsenotungsten bronze: Synthesis and characterization

Journal Article · · Journal of Solid State Chemistry
 [1];  [1];  [2];  [3];  [3];  [4];  [1]
  1. Univ. Bremen, Bremen (Germany)
  2. Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States). Chemical and Engineering Materials Division
  3. Univ. Bremen, Bremen (Germany). Foundation Institute of Materials Science (IWT)
  4. Forschungszentrum Julich (Germany). Inst. of Crystallography

Here we report on a novel compound Li3AsW7O25 obtained by solid-state reaction and characterized by diffraction and spectroscopic methods. The bronze-type compound crystallizes in the orthorhombic space group Pbca with a=724.38(3) pm, b=1008.15(4) pm, c=4906.16(17) pm and Z=8. The structure is built up by chains of WO6 octahedra interconnected by AsO4 tetrahedra and WO6 octahedra forming a polyhedral arrangement as seen in intergrowth tungsten bronzes. The X-ray single crystal structure refinement allows solving the complex arsenotungstate framework. The powder neutron diffraction data analysis locates the lithium atoms. Thermal analysis showed that Li3AsW7O25 is stable up to its melting at 1135(3) K followed by a decomposition at 1182(5) K. Finally, the Kubelka-Munk treatment of the UV-vis spectrum revealed a wide band gap in the range of 2.84-3.40 eV depending on the presumed electron transition type.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE Office of Science (SC), Basic Energy Sciences (BES); German Research Foundation (DFG)
Grant/Contract Number:
AC05-00OR22725; GE1981/3-1; GE1981/3-2; MA3333/6-1
OSTI ID:
1261434
Alternate ID(s):
OSTI ID: 1246453
Journal Information:
Journal of Solid State Chemistry, Vol. 226, Issue C; ISSN 0022-4596
Publisher:
ElsevierCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

References (19)

Tungsten Oxides, Tungsten Bronzes and Tungsten Bronze-Type Structures journal January 1992
Noncentrosymmetric Oxides journal October 1998
The tungsten bronzes and related compounds journal January 1968
Neutron diffraction studies of cubic tungsten bronzes journal February 1976
Investigation of the Rb–W–O system in connexion with the superconducting properties of the hexagonal tungsten bronzes journal April 2003
Crystal structure and superconductivity of rubidium tungsten bronzes RbxWO3 prepared by a hybrid microwave method journal April 2008
Structural instabilities and superconductivity in the alkali tungsten bronzes journal January 1978
Synthesis and characterization of niobium-doped potassium tetragonal tungsten bronzes, KxNbyW1−yO3 journal January 2009
Synthesis and characterization of niobium doped hexagonal tungsten bronze in the systems, CsxNbyW1−yO3 journal December 2010
K[AsW2O9], the first member of the arsenate–tungsten bronze family: Synthesis, structure, spectroscopic and non-linear optical properties journal August 2013
Synthesis, structure and properties of Na[AsW 2 O 9 ] journal December 2014
Synthesis, Structure, and Characterization of a New Second-Harmonic-Generating Tellurite:  Na 2 TeW 2 O 9 journal July 2002
New nonlinear-optical crystal: LiB_3O_5 journal January 1989
Effects of Dispersion and Focusing on the Production of Optical Harmonics journal January 1962
EXPGUI , a graphical user interface for GSAS journal April 2001
A New Series of Tungstoniobium Monophosphates with an Intersecting Tunnel Structure Closely Related to ReO3:ANb4WO9(PO4)3(A=K, Rb, Cs), KLiNb5O9(PO4)3, and KLi1−x(Nb, W)5O9(PO4)3 journal March 1998
Band-gap energy estimation from diffuse reflectance measurements on sol–gel and commercial TiO2: a comparative study journal September 2011
New Contributions to the Optics of Intensely Light-Scattering Materials Part I journal January 1948
Wide bandgap semiconductor materials and devices journal January 1996

Cited By (1)

Thermal Expansion Behaviors of Li 3 AsW 7 O 25 : A Case Study for Comparative Debye Temperature for a Large Polyatomic Unit Cell : Thermal Expansion Behaviors of Li journal February 2018