REBa2Cu3Oy films require a high critical current (Ic) under a high magnetic field at 77 K when using power applications. In this study, we fabricated Sm1.04Ba 1.96Cu3Oy (SmBCO) thick films prepared using a low-temperature growth (LTG) technique in order to improve crystal quality and enhance flux pinning. The LTG multilayer thick film using a (SmBCO/Sm-rich layer) × N (N = 1,2,...) multilayer system showed a high crystal quality. Additionally, the LTG multilayer thick film showed not only a high density of dislocations but also low-Tc particles within a high-Tc matrix. Therefore, the LTG multilayer film showed an Ic of 20.6 A/cm-width (77 K, B // c, B = 5 T) and had a thickness of only 1.35 μm and a low anisotropy Ic for the high-magnetic-field direction. These results support to the developing possibility of power devices using a solenoid-type coil.
|ジャーナル||Japanese Journal of Applied Physics, Part 2: Letters|
|出版ステータス||出版済み - 9 7 2007|
All Science Journal Classification (ASJC) codes
- Physics and Astronomy (miscellaneous)
- Physics and Astronomy(all)