Enhanced 77 K vortex-pinning in YBa2Cu3O7-x films with Ba2YTaO6 and mixed Ba2YTaO6 + Ba2YNbO6 nano-columnar inclusions with irreversibility field to 11 T.

Authors :: Rizzo, F.
Augieri, A.
Angrisani Armenio, A.
Galluzzi, V.
Mancini, A.
Pinto, V.
Rufoloni, A.
Vannozzi, A.
Bianchetti, M.
Kursumovic, A.
MacManus-Driscoll, J. L.
Meledin, A.
Van Tendeloo, G.
Celentano, G.
Source :: APL Materials; 2016, Vol. 4 Issue 6, p061101-1-061101-7, 7p
Publication Year :: 2016
Abstract: Pulsed laser deposited thin YBa<subscript>2</subscript>Cu<subscript>3</subscript>O<subscript>7-x</subscript> (YBCO) films with pinning additions of 5 at. % Ba<subscript>2</subscript>YTaO<subscript>6</subscript> (BYTO) were compared to films with <subscript>2</subscript>.5 at. % Ba<subscript>2</subscript>YTaO<subscript>6</subscript> + 2.5 at. % Ba<subscript>2</subscript>YNbO<subscript>6</subscript> (BYNTO) additions. Excellent magnetic flux-pinning at 77 K was obtained with remarkably high irreversibility fields greater than 10 T (YBCO-BYTO) and 11 T (YBCO-BYNTO), representing the highest ever achieved values in YBCO films. [ABSTRACT FROM AUTHOR]

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