Title :
MOCVD of YBCO and Buffer Layers on Textured Ni Alloyed Tapes
Author :
Stadel, O. ; Muydinov, R. Yu ; Keune, H. ; Schmidt, J. ; Wahl, G. ; Samoilenkov, S.V. ; Gorbenko, O.Yu. ; Melnikov, O.V. ; Korsakov, I.E. ; Kaul, A.R.
Author_Institution :
Tech. Univ. of Braunschweig, Braunschweig
fDate :
6/1/2007 12:00:00 AM
Abstract :
A RTR MOCVD was used for the deposition of YBCO and various oxides. A new MOCVD technique enable us to coat the metal tape directly without formation of NiO. At a low oxygen partial pressure the buffer layers were grown on the metal tape with good in plane and out of plane texture. The texture of the MgO buffer layers depend on the surface of the alloyed Ni-tape. YBCO layers exhibit excellent out of plane texture with FWHM(005) = 1.4 - 3.5deg and good in plane texture of FWHM(103) = 5-7deg. On MgO buffered Ni5at%W the inductive measured jc was 0.3-0.7 MA/cm2 at 77 K.
Keywords :
MOCVD; alloying; barium compounds; buffer layers; critical current density (superconductivity); high-temperature superconductors; magnesium compounds; nickel alloys; surface texture; yttrium compounds; MgO buffer layer; MgO interface; RTR MOCVD; YBCO layers; YBa2Cu3O7; critical current density; in plane texture; metal tape; out of plane texture; oxygen partial pressure; temperature 77 K; textured Ni alloyed tapes; Buffer layers; Chemical vapor deposition; Conductors; Costs; High temperature superconductors; MOCVD; Nickel alloys; Production; Solvents; Yttrium barium copper oxide; Buffer layers; MOCVD; YBCO; coated conductors; textured metal tapes;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2007.899044
