ar X iv : c on d - m at / 0 30 14 48 23 J an 2 00 3 Preparation of YBCO superconducting thick films On MgO substrates by modified melt growth process
نویسندگان
چکیده
Superconductingg thickk films (200µm ~300µm) of YBCO have been fabricated successfully on MgO substrates by a new approach. The precursor powders (YBa 2 Cu 3 O 7-δ (Y123) + 0.1molY 2 BaCuO 5 (Y211)) are placedd between two MgO (10mm×10mm)slicesto formsandwichstructure.TheYBCOthickk films have been obtainedd from the precursors by modifiedd melt growth process. Resistance measurementsofYBCOthickk filmsshowTconof87.3Kandd∆Tof 4.5K.Estimates
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