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dc.contributor.authorSayed, A M El-
dc.contributor.authorMousa, S M A-
dc.identifier.issn0975-0991 (Online); 0971-457X (Print)-
dc.description.abstractSodium tungsten bronzes, NaXWO3 have been prepared having x = 0.25-0.85 at temperatures between 700 and 850 °C in argon atmosphere. X-ray diffraction and IR absorption spectra were used to characterize the structure of the products. It was found to exist in two distinct phases tetragonal and cubic. The absorption spectra between 300 and 780 nm have been obtained by diffuse reflection method, and the characterized absorption peak wave length shows a slight shift to shorter wave lengths with increasing sodium content. The electrical conductivity (s) has been measured as a function of sodium concentration and temperature from 300 to 550 °K. The results indicate metallic conduction and the conductivity was found to increase with increasing sodium concentration.en_US
dc.relation.ispartofseriesC01B19/00; C21B13/00en_US
dc.sourceIJCT Vol.12(3) [May 2005]en_US
dc.subjectSodium tungsten bronzesen_US
dc.subjectelectrical conductivityen_US
dc.subjectoptical reflectanceen_US
dc.titleSome properties of sodium tungsten bronzes as a function of sodium concentrationen_US
Appears in Collections:IJCT Vol.12(3) [May 2005]

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