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PhD Thesis Defense by Juri Banchewski: Transient Liquid Assisted Growth of YBCO Superconducting Films: Growth Kinetics, Physical Properties and Vortex Pinning
Transient Liquid Assisted Growth of YBCO Superconducting Films: Growth Kinetics, Physical Properties and Vortex Pinning
by Juri Banchewski, Superconducting Materials and Large Scale Nanostructures (SUMAN) group

Abstract: High temperature superconductors (HTS) have been driving research and development programs for about three decades now and are on the verge of entering large scale utilization in the form of Coated Conductors (CCs), a robust and flexible tape architecture that enables textured growth of the rather brittle material class. A remaining bottleneck for widespread CC implementation is the high cost/performance ratio, essentially controlled by the complex and decelerating step of HTS layer growth.

In this thesis, we challenge the throughput and cost constraints of conventional growth methods through development of a novel growth technique that combines Chemical Solution Deposition (CSD), an inherently low-cost precursor deposition approach, with a high growth rate, non-equilibrium growth scheme that allows the formation of a transient liquid phase prior to crystallization of the final product phase: Transient Liquid-Assisted Growth via CSD (TLAG-CSD). We have successfully implemented the new process to fabricate YBa2Cu3O7–δ (YBCO) superconducting films, a cuprate-based HTS material with unmatched current carrying performance.

Supervisor:

Prof. Teresa Puig Molina, SUMAN group, ICMAB

PhD Committee:
President: Prof. Bernhard Holzapfel, Karlsruhe Institute of Technology (KIT), Germany
Secretary: Dr. Joffre Gutierrez, ICMAB-CSIC, Spain
Vocal: Prof. Salvador Ferrer Fabregas, Alba synchrotron, Spain

University: Universitat Autònoma de Barcelona (UAB)
PhD Programme: Physics

Dec 17, 2020 11:00 AM in Madrid

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