Synthesis and characterisation of nanoscale magnesium oxide powders and their application in thick films of Bi2Sr2CaCu2O8
Bhargava, Atit, Alarco, Jose A., Mackinnon, Ian D.R., Page, David, & Ilyushechkin, Alexander (1998) Synthesis and characterisation of nanoscale magnesium oxide powders and their application in thick films of Bi2Sr2CaCu2O8. Materials Letters, 34(3-6), pp. 133-142.
Nanoscale MgO powder was synthesized from magnesite ore by a wet chemical method. Acid dissolution was used to obtain a solution from which magnesium containing complexes were precipitated by either oxalic acid or ammonium hydroxide, The transformation of precipitates to the oxide was monitored by thermal analysis and XRD and the transformed powders were studied by electron microscopy. The MgO powders were added as dopants to Bi2SrCa2CuO8 powders and high temperature superconductor thick films were deposited on silver. Addition of suitable MgO powder resulted in increase of critical current density, J(c), from 8,900 Acm(-2) to 13,900 Acm(-2) measured at 77 K and 0 T. The effect of MgO addition was evaluated by XRD, electron microscopy and critical current density measurements. (C) 1998 Elsevier Science B.V.
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|Item Type:||Journal Article|
|Additional Information:||ISI Document Delivery No.: ZK188
Times Cited: 59
Cited Reference Count: 22
Bhargava, A Alarco, JA Mackinnon, IDR Page, D Ilyushechkin, A
Elsevier science bv
|Keywords:||synthesis, nanoscale, magnesium oxide, magnesite, high temperature superconductor, Bi2Sr2CaCu2O8, critical current, MgO, coprecipitation, microstructure, manufacture, precursor, Mg(OH)2|
|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)
Australian and New Zealand Standard Research Classification > ENGINEERING (090000) > MATERIALS ENGINEERING (091200) > Functional Materials (091205)
|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:||25 Feb 2013 22:34|
|Last Modified:||26 Feb 2013 23:42|
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