Abstract
This paper summarizes the results on the characterization of fine particulates of YBa 2Cu 3O x superconducting oxide produced by reacting an atomized nitrate solution containing yttrium:barium:copper in the atomic ratio 1:2:3 respectively, in an oxyhydrogen flame. The characterization of the resulting oxide compound includes microstructural analysis by optical microscopy and scanning electron microscopy (SEM), X-ray diffraction and magnetic susceptibility measurements. SEM reveals the primary particle size (about 0.1−0.3 μm) and morphology of a substrate deposit, produced from solution concentrations ranging from 5 to 33 g l −1. X-ray diffraction measurements of oxygen-annealed particulate reveal a crystal structure identical with that of the conventionally produced superconducting oxide. Magnetic susceptibility measurements using a superconducting quantum interference device magnetometer demonstrate that the material is superconducting with a T c of about 93 K.
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