We present a simple liquid assisted processing (LAP) method, to be used in-situ during pulsed laser deposition growth to give both rapid growth rates (50 Hz deposition leading to >250 nm/min with a single plume) and strong pinning (improved x 5-10 over plain standard YBCO films grown at similar rates). Achieving these two important features simultaneously has been a serious bottleneck to date. LAP enhances the kinetics of the film growth so that good crystalline perfection can be achieved at up to 60 x faster growth rates than normal, while also enabling artificial pinning centres to be self assembled into fine nanocolumns. In addition, LAP allows for RE mixing (80% of Y with 20% of Yb, Sm, or Yb+Sm), creating effective point-like disorder within the REBCO lattice and which leads to strongly improved pinning at 30 K and below. Overall, LAP is a simple method which could be adopted by other in-situ physical or vapour deposition methods (i.e PLD, MOCVD, evaporation, etc) to significantly enhance both growth rate and performance.
@article{arxiv.2011.01116,
title = {Strong pinning at high growth rates in Rare Earth Barium Cuprate},
author = {J. Feighan and M. H. Lai and A. Kursumovic and D. Zhang and H. Wang and J. H. Lee and S Moon and J. L. MacManus-Driscoll},
journal= {arXiv preprint arXiv:2011.01116},
year = {2020}
}
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