Abstract
The flux creep phenomena and the J c characteristics have been investigated in the YBa 2 Cu 3 O 7 (YBCO) thin films grown by metal organics chemical vapor deposition (MOCVD) technique. The anisotropy of the current density (J c ) is discussed on the basis of the intrinsic pinning model and the anisotropic critical magnetic field (H c2 ). The properties of the high J c and the pinning energy are related with the fine precipitates observed by tunneling electron microscopy (TEM). The strong pinning mechanism affects the amount of the flux motion.
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