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Published online by Cambridge University Press: 28 February 2011
Preforms made by filling silver tubes with YBa2Cu3O7‐x (YBCO) powder were drawn to obtain wires with diameters in the 0.25mm to 1.00mm range. Straight samples of these wires were sintered and oxygenated. The observed changes in Tc and Jc while the samples were thermaly cycled or mechanically deformed are reported.