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Rapid Pyrolysis of YBa2Cu3O7-δ Films by Fluorine-Free Polymer-Assisted Chemical Solution Deposition Approach

  • X. Yang
  • W. T. WangEmail author
  • L. Liu
  • B. L. Huo
  • M. J. Wang
  • G. S. Yang
  • Z. J. Tian
  • Y. D. Xia
  • Y. ZhaoEmail author
Original Paper
  • 13 Downloads

Abstract

A rapid pyrolysis heat treatment was proposed to prepare YBa2Cu3O7-δ (YBCO) films by a self-developed fluorine-free polymer-assisted chemical solution deposition (PA-CSD) approach. Metal acetates and polyvinyl butyral (PVB) in YBCO wet films were pyrolyzed within 30 min, which is less than one-twentieth the pyrolysis time for conventional fluorine–free CSD methods. The influence of the rapid decomposition on the microstructures of YBCO precursor films was investigated compared to conventionally pyrolyzed films. Based on the rapidly pyrolyzed films, high-temperature firing process was further optimized to fabricate epitaxially grown YBCO films. The results demonstrate that most of the defects generated in the rapid pyrolysis process can nearly be eliminated by extending firing time to 2 h, and thus the textured YBCO films with denser and smoother morphologies were obtained with superconducting transition temperature Tc of 93.3 K and critical current density Jc of 3.1 MA/cm2 at 77 K and self-field. This is almost three times of the Jc of the conventionally pyrolyzed film.

Keywords

YBCO film PA-CSD Rapid pyrolysis Transition temperature Critical current density 

Notes

Funding

This work was financially supported by the Field Foundation of Pre-Research on Equipment [grant number 61409230502]; the Fundamental Research Funds for the Central Universities [grant number 2019XJ03]; the Program of International S&T Cooperation [grant number 2013DFA51050]; the National Nature Science Foundation of China [grant number 51271155, 51377138, 51702265]; the Fundamental Research Funds for the Central Universities [grant number 2682015ZT11]; and the Science and Technology Project in Sichuan Province [grant number 2017JY0057].

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • X. Yang
    • 1
    • 2
  • W. T. Wang
    • 1
    • 2
    Email author
  • L. Liu
    • 1
    • 2
  • B. L. Huo
    • 1
    • 2
  • M. J. Wang
    • 2
  • G. S. Yang
    • 1
    • 2
  • Z. J. Tian
    • 1
    • 2
  • Y. D. Xia
    • 3
  • Y. Zhao
    • 2
    • 4
    Email author
  1. 1.Key Laboratory of Advanced Technologies of Materials (Ministry of Education of China), School of Materials Science and EngineeringSouthwest Jiaotong UniversityChengduChina
  2. 2.Key Laboratory of Magnetic Levitation and Maglev Trains (Ministry of Education of China), School of Electrical EngineeringSouthwest Jiaotong UniversityChengduChina
  3. 3.School of Physical Science and TechnologySouthwest Jiaotong UniversityChengduChina
  4. 4.College of Physics and EnergyFujian Normal UniversityFuzhouPeople’s Republic of China

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