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Microstructure and superconducting properties of (BaTiO3, Y2O3)-doped YBCO films under different firing temperatures
YBa 2 Cu 3 O 7− x (YBCO) films with co-doping of BaTiO 3 (BTO) and Y 2 O 3 nanostructures were successfully fabricated on LaAlO 3 (LAO) substrate by metal organic deposition using trifluoroacetates (TFA-MOD). The focus of this study was to optimize the process conditions during the firing heat treat...
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Published in: | Rare metals 2017, Vol.36 (1), p.37-41 |
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Main Authors: | , , , , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | YBa
2
Cu
3
O
7−
x
(YBCO) films with co-doping of BaTiO
3
(BTO) and Y
2
O
3
nanostructures were successfully fabricated on LaAlO
3
(LAO) substrate by metal organic deposition using trifluoroacetates (TFA-MOD). The focus of this study was to optimize the process conditions during the firing heat treatment of high critical current density (
J
C
)-co-doped 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 X-ray 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 obtained. |
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ISSN: | 1001-0521 1867-7185 |
DOI: | 10.1007/s12598-015-0606-2 |