Abstract
The mixture of Y2O3, BaCO3 and CuO was ground by a vibration mill with allumina vessel. The products were calcined at 925°C for 2 days, and annealed at 500°C for several days. The effects of dry grinding on the samples were inferred from the variations of the strain (<εl.2>1/2, εl = Δ L/ L) and the lattice parameters (a, b) determined by X-ray diffraction peaks.As the results, it has been clarified that the grinding for 100 minutes under above mentioned heating conditions gives the best conductor of these products, and comparatively eraly stage of grinding, good samples was produced, it would probably be caused by rapid decreasing of crystallite size by the grinding.
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