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Effect of Tungsten and Molybdenum Doping on the Semiconductor–Metallic Transition in Vanadium Dioxide Produced by Evaporative Decomposition of Solutions and Hydrogen Reduction
Author(s) -
Lawton Stanley A.,
Theby Edward A.
Publication year - 1995
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1995.tb08392.x
Subject(s) - tungsten , molybdenum , inorganic chemistry , decomposition , tetragonal crystal system , hydrogen , transition metal , tin dioxide , materials science , vanadium , chemistry , doping , phase (matter) , metallurgy , organic chemistry , catalysis , optoelectronics
V 1– x W x O 2 and V 1– x Mo x O 2 , 0 < x < 0.03, powders have been produced by the evaporative decomposition of solutions of vanadyl sulfate hydrate with tungsten dioxide dichloride or molybdenum dioxide dichloride in a hydrogen/nitrogen atmosphere. The powders consist primarily of hollow, porous, spherical shells. Differential scanning calorimetric analysis of the powders indicates that the 67°C mono‐clinic‐tetragonal phase transition in VO 2 shifts to lower temperatures by 23°C/(at.% tungsten) and 6.3°C/(at.% molybdenum).