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IBM Journal of Research and Development  
Volume 33, Number 3, Page 299 (1989)
High-Tc superconductivity
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Critical current measurements in single crystals and single-grain boundaries in YBa2Cu3O7 films

by P. Chaudhari, D. Dimos, J. Mannhart
The temperature, magnetic field, and orientation dependence of the critical current density of superconducting YBa2Cu3O7 films have been determined from transport measurements. The results support a model of flux creep within single grains and weak-link coupling across grain boundaries.
Related Subjects: Superconductivity; Superconductivity, high-Tc