Flux pinning properties of MgB2 thin films on Ti buffered substrate prepared by molecular beam epitaxy
スポンサーリンク
概要
- 論文の詳細を見る
Transport properties of the MgB2 thin films on Si, MgO and ZnO substrates with Ti buffer layer prepared by molecular beam epitaxy were investigated to clarify effects of the substrates and the Ti buffer layer on flux pinning. The critical current density Jc of each sample shows different dependence on magnetic fields parallel to c-axis. However, the scaling analysis of the macroscopic pinning force for all the measured samples implies that the grain boundaries work as the dominant pinning centers for B//c. The pinning parameter for MgB2/Ti/Si estimated from the electric field E vs. the current density J characteristics shows the highest value among all the measured samples. This result is attributed to the high density of grain boundaries caused by the effect of both the Ti buffer and Si substrate in the growth process. Therefore, the selection of substrates and buffer layer strongly affects the flux pining properties of MgB2 thin films and plays an important role in the determination of performance for superconducting devices and wires.http://www.elsevier.com/wps/find/journaldescription.cws_home/505713/description#description
論文 | ランダム
- タンパク質の電気泳動と沈殿の教材化
- Research affinity beadsの構築とその応用
- 人間文化通信 2007年度オープンキャンパス
- ウナギの水産物流通の近況 (水産物の流通と販売) -- (主要魚種の最近の動き)
- 日本市場をめぐるウナギ産業の近況(7月例会,西南支部)