Influence of oxygen pressure on critical current density and magnetic flux pinning structures in YBa2Cu3O7-x fabricated by chemical solution deposition

doi:10.1088/1674-1056/20/2/027402

Abstract This paper studies the effect of oxygen partial pressure on the fabrication of YBa₂Cu₃O_7-x films on (00l) LaAlO₃ substrates by metalorganic deposition using trifluoroacetates (TFA-MOD). As the oxygen partial pressure increases to 1500 Pa, a great increase in the superconducting properties is observed at high magnetic fields parallel to the YBCO c axis. The cross-sectional transmission electron microscope images show that a high density of stacking faults in the size range of 10-15 nm may act as flux pinning centres to enhance the critical current density of the YBCO films.

Keywords: YBCO oxygen pressure stacking fault TFA-MOD

Received: 01 September 2010
Revised: 13 September 2010
Accepted manuscript online:

PACS:	74.76.Bz
	81.15.Lm	(Liquid phase epitaxy; deposition from liquid phases (melts, solutions, And surface layers on liquids))

Fund: Project supported by the National Natural Science Foundation of China (Grant No. 51002149).

Cite this article:

Ding Fa-Zhu(丁发柱), Gu Hong-Wei(古宏伟), Zhang Teng(张腾), Dai Shao-Tao(戴少涛), and Xiao Li-Ye(肖立业) Influence of oxygen pressure on critical current density and magnetic flux pinning structures in YBa₂Cu₃O_7-x fabricated by chemical solution deposition 2011 Chin. Phys. B 20 027402

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Influence of oxygen pressure on critical current density and magnetic flux pinning structures in YBa2Cu3O7-x fabricated by chemical solution deposition

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Influence of oxygen pressure on critical current density and magnetic flux pinning structures in YBa₂Cu₃O_7-x fabricated by chemical solution deposition