Authors: HongYan Wang FaZhu Ding HongWei Gu HuiLiang Zhang ZeBin Dong
Publish Date: 2015/09/18
Volume: 36, Issue: 1, Pages: 37-41
Abstract
YBa2Cu3O7−x YBCO films with codoping of BaTiO3 BTO and Y2O3 nanostructures were successfully fabricated on LaAlO3 LAO substrate by metal organic deposition using trifluoroacetates TFAMOD The focus of this study was to optimize the process conditions during the firing heat treatment of high critical current density J Ccodoped YBCO films The effect of the firing temperatures on both the surface morphology and the superconducting properties for the doped YBCO films was systematically studied According to the Xray diffraction XRD and scanning electron microscopy SEM results the films prepared at 820 and 850 °C show poor electrical performance due to impurity phases and large pores In contrast the dense YBCO films prepared at 830 and 840 °C with the critical current densities of 10 MA·cm−2 77 K 0 T are obtainedThis work was financially supported by the National Natural Science Foundation of China Nos 51002149 and 51272250 the National Basic Research Program of China No 2011CBA00105 the National High Technology Research and Development Program of China No 2014AA032702 and the Beijing Natural Science Foundation China No 2152035
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