Growth and physical properties of top-seeded infiltration growth processed large grain (Gd, Dy)BCO bulk superconductors

0482235 - FZÚ 2018 RIV US eng J - Článek v odborném periodiku
Naik, S.P.K. - Muralidhar, M. - Jirsa, Miloš - Murakami, M.
Growth and physical properties of top-seeded infiltration growth processed large grain (Gd, Dy)BCO bulk superconductors.
Journal of Applied Physics. Roč. 122, č. 19 (2017), s. 1-10, č. článku 193902. ISSN 0021-8979. E-ISSN 1089-7550
Institucionální podpora: RVO:68378271
Klíčová slova: silver sheathed superconducting tapes * thick REBaCuO films * electromagnetic properties * solid phase -liquid phase reaction
Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)
Impakt faktor: 2.176, rok: 2017

The primary prerequisite for successful single grain growth of a REBa2Cu3Oy bulk superconductor is the determination of an optimized growth temperature window of the given system. In our recent work, addition of 20wt. % of Dy2BaCuO5 (Dy-211) to the GdBa2Cu3O7-d bulk sample [(Gd,Dy)BCO] enhanced superconducting properties. Then, different isothermal dwell times were tested at various undercooling temperatures to find the temperature window appropriate for the single grain growth by a top-seeded infiltration growth process performed in air. Nearly perfect single-grain (Gd,Dy)BCO crystals were grown. A systematic and detailed investigation of the microstructure, composition, and physical properties of the single-grain (Gd,Dy)BCO superconductors was carried out. The superconducting transition was sharp with the onset at 92.9K.
Trvalý link: http://hdl.handle.net/11104/0277615