Abstract
Low-cost and commercially viable processes to fabricate coated conductors are necessary forapplication in electric-power technologies. We demonstrate the chemical solution growth ofCeO2 buffer and YBCO layers on IBAD-YSZ/Hastelloy templates. Very good biaxially texturedCeO2 buffer layers can be formed by the chemical solution method using inorganic cerium nitrateprecursors. Through control of the solution molarity, very uniform, smooth, and denseCeO2 buffer layers can be obtained. Subsequently, the YBCO films were deposited by metallorganicdeposition using the trifluoroacetic (TFA-MOD) method. High-critical-current-density(Jc) YBCO films were obtained, with the transport current density of about1.2 MA cm−2 (77 K, 0 T). The onset transition temperature is as high as 94.5 K, and the transition widthis about 1.3 K. Hence, the mature IBAD technique, combined with the low-cost solutionmethod, can provide a very promising robust process for fabrication of low-cost YBCOcoated conductor on a large scale.
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