Manufacture of fine-grained Y2BaCuO5 powder by coprecipitation
Quantities of Y2BaCuO5 powder greater than 500g have been manufactured by a co-precipitation process. By suitable heat treatments, the particle size of these powders can be varied from 5µm to less than 500nm. Sub-micrometer size powders may, under some conditions, have a duller green colour which is attributed to <2% unreacted material. However, after re-grinding and re-firing of this powder, high-purity powders can be achieved without significant grain growth. Inductively coupled plasma (ICP) spectroscopy is used to measure the stoichiometry of the powders and X-ray diffraction is used to determine phase purity. In both cases, the bulk composition is consistent with Y2BaCuO5 and phase purity is considered better than 95%.
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|Item Type:||Journal Article|
|Additional Information:||ISI Document Delivery No.: RH152
Times Cited: 10
Cited Reference Count: 16
Bhargava, a alarco, ja mackinnon, idr yamashita, t
Elsevier science bv
|Keywords:||critical current-density, melt textured YBa2Cu3O6+x, microstructure, coprecipitation, Y2BaCuO5|
|Subjects:||Australian and New Zealand Standard Research Classification > CHEMICAL SCIENCE (030000) > MACROMOLECULAR AND MATERIALS CHEMISTRY (030300) > Synthesis of Materials (030306)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Ceramics (091201)
|Divisions:||Current > Schools > School of Chemistry, Physics & Mechanical Engineering
Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
|Deposited On:||26 Feb 2013 23:45|
|Last Modified:||26 Feb 2013 23:45|
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