Temperature dependent x-ray diffraction study of lightly doped Na{sub x}WO{sub 3}

Journal Article · Mon Mar 21 00:00:00 EDT 2011 · Applied Physics Letters

DOI:https://doi.org/10.1063/1.3569716· OSTI ID:21518336

Paul, Sanhita; Mukherjee, G D; Ghosh, Anirudha; Raj, Satyabrata ^[1]; Oishi, S ^[2]

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1. Department of Physical Sciences, Indian Institute of Science Education and Research-Kolkata, Mohanpur Campus, Nadia 741252 (India)
2. Faculty of Engineering, Shinshu University, Nagano 380-8553 (Japan)

Temperature dependent x-ray diffraction studies have been carried out on nonstoichiometric lightly doped sodium tungsten bronze (Na{sub x}WO{sub 3} for x=0.025). The investigation reveals a structural modification around 230 K. Although the high and low temperature phases are monoclinic but at low temperature the corner sharing WO{sub 6} octahedra get significantly distorted due to displacement of tungsten and oxygen atoms from its mean position. This structural modification induces polaron formation in Na{sub 0.025}WO{sub 3} below 230 K.

• OSTI ID: 21518336
• Journal Information: Applied Physics Letters, Vol. 98, Issue 12; Other Information: DOI: 10.1063/1.3569716; (c) 2011 American Institute of Physics; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
ATOMS
CRYSTAL-PHASE TRANSFORMATIONS
DOPED MATERIALS
MODIFICATIONS
MONOCLINIC LATTICES
OXYGEN
PHOTOELECTRON SPECTROSCOPY
SODIUM ADDITIONS
SODIUM TUNGSTEN BRONZE
TEMPERATURE DEPENDENCE
TEMPERATURE RANGE 0065-0273 K
TUNGSTATES
TUNGSTEN
X-RAY DIFFRACTION
ALKALI METAL COMPOUNDS
ALLOYS
CHALCOGENIDES
COHERENT SCATTERING
CRYSTAL LATTICES
CRYSTAL STRUCTURE
DIFFRACTION
ELECTRON SPECTROSCOPY
ELEMENTS
MATERIALS
METALS
NONMETALS
OXIDES
OXYGEN COMPOUNDS
PHASE TRANSFORMATIONS
REFRACTORY METAL COMPOUNDS
REFRACTORY METALS
SCATTERING
SODIUM ALLOYS
SODIUM COMPOUNDS
SODIUM OXIDES
SPECTROSCOPY
TEMPERATURE RANGE
TRANSITION ELEMENT COMPOUNDS
TRANSITION ELEMENTS
TUNGSTEN COMPOUNDS
TUNGSTEN OXIDES