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One dimensional nanostructured branched wires of tin dioxide (SnO2) were prepared in an alumina boat by a self catalytic method at different temperatures in a flow of argon and oxygen. The SEM images exhibit the different morphologies of the nanowires with an i.d. of around 40 nm, and presence of core/cluster shell nanowires and of nano/microbelt structures. XRD studies show the product to possess...