โ Scribed by Y.G. Xiao; J.W. Li; B. Yin; Z.X. Zhao; D.K. Finnemore; J.D. Verhoeven
No coin nor oath required. For personal study only.
The irreversibility lines in Cu-Nb in-situ formed composites have been investigated by DC magnetization measurements. Extended reversible regions are clearly identified in the H-T phase plane. The melting theory of the vortex lattice is found to describe the observed irreversibility lines well for all the three samples, whereas the flux-creep picture is also applicable for the thinnest one, due possibly to the suppression of the irreversibility line to lower temperatures at which pinning and flux creep are more important. The suppression of the irreversibility line with the reduced rolling thickness of the sample has also been discussed within the contexts of several theoretical models.
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We report vortex-Bose-glass-like irreversibility lines (IL) depending on both growth temperature and nominal content of a nanorod material in Er-Ba-Cu-O films containing nanorods. The IL was expanded to higher magnetic fields with decreasing growth temperature รฐT s ร, while T c decreased. Our findin