[16p-W9_325-1~10] 11.2 Thin and thick superconducting films, coated conductors and film crystal growth

2:00 PM - 2:15 PM JST(5:00 AM - 5:15 AM UTC)

[16p-W9_325-3] Investigation of Deposition Conditions for Lowering the Electric Resistance of the Conductive Sr_0.95La_0.05TiO₃ Buffer Layer

〇Tsubasa Uchida¹, Akiyoshi Matsumoto², Takumi Ikenoue¹, Toshiya Doi¹ (1.Kyoto Univ., 2.NIMS)

Keywords:

REBCO wires,Conductive Buffer Layers

We have been investigating a superconducting coated conductor fabricated by forming a conductive Sr_0.95La_0.05TiO₃ (La-STO) buffer layer on a Ni-electroplated Cu/SUS316L laminated tape, followed by the deposition of a YBCO layer. To reduce the electrical resistance in the thickness direction of the buffer layer, the La-STO layer thickness was decreased. At the interface between the La-STO and the Ni layers, no NiO was formed. A 140 nm thick La-STO layer effectively prevented the diffusion of Ni into the YBCO layer.