Solid State Science and Technology, Vol. 12, No. 1 (2004) 159-165
FABRICATION OF Tl0.9Bi0.1Sr1.9In0.1Ca0.9Y0.1Cu2O7 AND YBa2Cu3O7-δ
SUPERCONDUCTOR COATED TAPES
R.Omara, W.F.Abdullaha, M.H. Jumalib, A.K.Yahya a*
aFaculty of Applied Sciences, Universiti Teknologi MARA,
40450 Shah Alam, Selangor, Malaysia email@example.com
bSchool of Applied Physics, Universiti Kebangsaan Malaysia,
43600 Bangi, Selangor, Malaysia
In this paper, preparation of Y123 and Tl1212 thick films on silver substrate using a simple coating procedure are reported. In this procedure YBa2Cu3O7-δ and Tl0.9Bi0.1Sr1.9In0.1Ca0.9Y0.1Cu2O7 superconductors were synthesized using the conventional solid state method and transformed into slurry by mixing with appropriate amounts of organic binder, dispersant and solvent. The slurry was then transferred on silver substrates. The resulting thick film was annealed at low temperature for 2-3 hours to remove the organic material. It was then subjected to thermal treatment before electrical resistance measurements (dc) using the four-point-probe method. The Y123 and Tl1212 coated tapes showed metallic normal state behaviors with critical temperature Tc zero of 62 K and 72 K, respectively. The critical current (Ic) of the Y123 and Tl1212 tapes measured at 40 K were 390.5 mA and 864.5 mA respectively.
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