日本金属学会誌

J. Japan Inst. Metals, Vol. 71, No. 11 (2007),
pp. 1006-1010

Oxide Buffer Layers and YBa2Cu3O7 Superconducting Material Epitaxially Grown on Cube Textured Ni Tape

Toshiya Doi1, Kazuhiro Kawahara1, Yoshinori Hakuraku1, Kunihiro Shima2, Naoji Kashima3 and Shigeo Nagaya3

1Fuculty of Engineering, Kagoshima University, Kagoshima 890-0065
2Tanaka Kikinzoku Kogyo K.K., Tomioka 370-2452
3Chubu Electric Power Co., Inc., Nagoya 459-8522

Abstract:

We investigated the effect of the Ar+ ion beam irradiation on removing NiO and/or S on the {100}<001> textured Ni tape surface, and the validity of the tin doped In2O3 (ITO) as a buffer layer which could be epitaxially grown at lower temperature. Excellent biaxial crystal orientations of the CeO2, YSZ and YBCO were achieved in the YBCO/YSZ/CeO2 prepared on the {100}<001> textured Ni tape, by irradiating the surface of the Ni tape before starting the deposition. The Jc of the YBCO/YSZ/CeO2/Ni tape exceeded 2 MA/cm2 at 77 K. We also prepared the biaxially oriented YBCO on the In2O3 buffered Ni tape. We confirmed that ITO did not react with YBCO, and that ITO aligned biaxially on the {100} <001> textured Ni tape.


(Received 2007/5/30)

Keywords:

superconductor, YBa2Cu3O7, cube texture, epitaxial growth, buffer layer, critical current


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