抄録
BaHfO3(BHO)-doped SmBa2Cu3Oy (SmBCO) superconducting films were fabricated with a seed layer and low-temperature growth (LTG technique) via pulsed laser deposition. The LTG technique enables the fabrication of high-quality SmBCO films even at a low substrate temperature during the deposition, and also greatly increases the number density of BHO nano-rods. Transmission electron microscopy observations showed that the 5.6 vol% BHO-doped sample had a high number density [(4.8 ± 0.3) × 103 μm-2] of small (5.4 ± 0.7 nm) BHO nano-rods. This sample exhibits maximum flux pinning forces (Fp) of 405 GN m-3 in 9.0 T at 40 K and 105 GN m-3 in 9.0 T at 65 K. The high density and small size of the nano-rods in a REBa2Cu3Oy matrix (where RE is a rare earth element) is considered to be very effective for enhancing Fp at low temperatures under a high field.
本文言語 | 英語 |
---|---|
論文番号 | 065013 |
ジャーナル | Superconductor Science and Technology |
巻 | 28 |
号 | 6 |
DOI | |
出版ステータス | 出版済み - 6月 1 2015 |
外部発表 | はい |
!!!All Science Journal Classification (ASJC) codes
- セラミックおよび複合材料
- 凝縮系物理学
- 金属および合金
- 電子工学および電気工学
- 材料化学