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J_{\rm c}-B Properties of {\rm YBa}_{2}{\rm Cu}_{3}{\rm O}_{7} Films Prepared on {\rm CeO}_{2}/{\rm YSZ/CeO}_{2} Buffered Ni-Electroplated Cu Tapes

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9 Author(s)
Makoto Tokudome ; Fac. of Eng., Kagoshima Univ., Kagoshima, Japan ; Toshiya Doi ; Ryota Tomiyasu ; Manabu Daio
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The Cu substrates have the advantages of no ferromagnetic contribution to hysteretic AC losses, and low cost compared to Ni substrates. We investigated the Jc-B properties of YBCO films deposited on the cube-textured Cu tapes with intervening buffer layers. A protective Ni overlayer was added on top of the cube-textured Cu tape by electroplating to reduce the oxidation rate of the Cu substrate. The YBCO films prepared on the CeO2/YSZ/CeO2 buffered Ni-electroplated Cu tapes revealed the transport Jc exceeding 3.6 MA/cm2 at 77 K in a self-field. We also confirmed that our Ni-electroplated Cu tape lost its ferromagnetism after 700degC times 1 hour heat treatment.

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IEEE Transactions on Applied Superconductivity  (Volume:19 ,  Issue: 3 )