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3 January 2006 Nanostripes in superconducting REBa2Cu3O7 superconductors: robust vortex pinning sites
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Abstract
We report a naturally grown stripe structure with a nanometer scale wavelength in REBa2Cu3O7-δ (RE = Sm and Eu) superconductors investigated with scanning tunneling microscopy (STM) and transmission electron microscopy (TEM). Such a periodic array was unveiled owning to the 3 dimensionally spatial oscillation of RE and Ba around the stoichiometric ratio. The study displayed that novel nanostripes function as robust pinning sites and effectively enhance the peak effect and the irreversibility line at 77K. This illustrates an approach to fabricate high performance REBa2Cu3O7-δ superconductors for application in liquid nitrogen temperature.
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A. Hu, H. Zhou, J. M. Bell, and P. Evans "Nanostripes in superconducting REBa2Cu3O7 superconductors: robust vortex pinning sites", Proc. SPIE 6037, Device and Process Technologies for Microelectronics, MEMS, and Photonics IV, 60371H (3 January 2006); https://doi.org/10.1117/12.638196
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