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Preparation of substrates for IBAD-MgO coated conductors

  • Vladimir Matias
  • , Jens Hänisch
  • , E. John Rowley
  • , Chris Sheehan
  • , Paul G. Clem
  • , Noriyuki Kumasaka
  • , Ichiro Kodaka

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

9 Scopus citations

Abstract

We examine the influence of various substrate preparation procedures for ion-beam assist deposition (IBAD) texturing of MgO. IBAD-MgO nano-texturing is very sensitive to the nucleation surface, and surface roughness has an important influence on the texture of the MgO layer. We studied Hastelloy C-276 metal alloy as the substrate. The untreated substrate is leveled by either electropolishing, mechanical polishing or solution deposition. All three methods are applied to continuously moving tapes in long lengths. The RMS surface roughness decreases from 20-50 nm for the untreated substrate to 0.5 nm, 0.3 nm and 1 nm respectively. The in-plane and out-of plane crystalline alignment of the MgO layer improves as the roughness is decreased below 2 nm.

Original languageEnglish
Title of host publicationMaterials Research Society Symposium Proceedings - Progress in High-Temperature Superconductors
Pages1-5
Number of pages5
StatePublished - Dec 1 2007
EventProgress in High-Temperature Superconductors - 2007 MRS Spring Meeting -
Duration: Dec 1 2007 → …

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1001
ISSN (Print)0272-9172

Conference

ConferenceProgress in High-Temperature Superconductors - 2007 MRS Spring Meeting
Period12/1/07 → …

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