28 June 2015 to 2 July 2015
JW Marriott Starr Pass Resort
Etc/GMT-7 timezone

Optimizing Flux Pinning of YBCO Thin Films with BZO + Y2O3 Double-Mixed Phase Additions

29 Jun 2015, 09:00
2h
Exhibit Hall (Arizona Ballroom) ()

Exhibit Hall (Arizona Ballroom)

Poster Presentation ICMC-10 - Flux Pinning and Critical Current M1PoA - Superconducting Materials and Applications

Speaker

Timothy Haugan (U.S. Air Force Research Laboratory)

Description

Adding nanophase defects to YBa2Cu3O7-z (YBCO) superconductor thin films is well-known to enhance flux pinning; resulting in an increase in current density (Jc). While many previous studies focused on single phase additions, the addition of several phases simultaneously shows promise in improving current density by combining different pinning mechanisms. This paper encompasses the effect of the addition of insulating, nonreactive phases of barium zirconium oxide (BZO) and yttrium oxide Y2O3. Processing parameters varied the target composition volume percent of BZO from 2 - 6 vol. %, while maintaining 3 vol. % Y2O3, and the remaining vol. % YBCO. Pulsed laser deposition produced thin films on LaAlO3 (LAO) and SrTiO3 (STO) substrates at various deposition temperatures. Comparison of strong and weak flux pinning mechanisms, current densities, critical temperatures, and microstructures of the resulting films will be presented.

Primary author

Mrs Mary Ann Sebastian (U.S. Air Force Research Laboratory)

Co-authors

Mr Charles Ebbing (U. of Dayton Research Institute) Dr George Panasyuk (UES Inc.) Dr Haiyan Wang (Texas A&M Univ.) John Murphy (University of dayton Research Institute) Timothy Haugan (U.S. Air Force Research Laboratory)

Presentation Materials

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