Abstract
The nanoscale YBa2Cu3O7−x (YBCO) particles, which are synthesized by a citrate pyrolysis technique [Physica C, 371 (2002) 129], are heated at 850 °C under O2 atmosphere for 0, 0.5, 2, 8, 20 h, respectively. The size and crystalline quality of the YBCO nanoscale particles after annealing are studied by transmission electron microscopy (TEM).
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