IBAD-MgO technology for coated conductors

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Ion-beam assisted deposition (IBAD) technology has been successfully applied to high-temperature superconductor coated conductors (CC) as textured substrates. Since the coated conductors were proposed as a potential framework for utilizing the superior transport characteristics of YBa2Cu3O7 and related cuprate oxides, several methods including rolling-assisted bi-axial textured substrates (RABiTS) and inclined substrate deposition (ISD), as well as IBAD, have been attempted. As of 2016, most companies that are trying to commercialize CC adapt IBAD technology except for American Superconductors who use RABiTS predominantly. For the materials in the IBAD process, initial efforts to use yttria-stabilized zirconia (YSZ) or related fluorites in Fujikura in Japan have quickly given way to MgO which technique was developed by Stanford University in the USA. In this review, we present a historical overview of IBAD technology, in particular, for the application of CC. We describe the key scientific understanding of nucleation, the texturing mechanism, and the growth of large bi-axial grains and discuss some potential new IBAD materials and systems for large-scale production.

Original languageEnglish
Pages (from-to)1-5
Number of pages5
JournalProgress in Superconductivity and Cryogenics (PSAC)
Issue number3
StatePublished - Sep 2016

Bibliographical note

Funding Information:
This work was supported by National Research Foundation (NRF) grants funded by the Korean government (MSIP) (No. NRF-2014R1A2A2A01004070) and (No. 2015001948). The authors thank Miyoung Kim of Seoul National University for the TEM work and Rak-Kil Ko of KERI for the samples shown in Fig. 2.

Publisher Copyright:
© 2016, Progress in Superconductivity and Cryogenics (PSAC). All rights reserved.


  • Coated conductors
  • Ion-beam assisted deposition
  • Large-scale production
  • New IBAD materials
  • Texturing Mechanism


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