| 摘要 |
PURPOSE:To obtain a thin film of a complex oxide superconductive material with a high critical current density by making the substantial part of the surface of a complex oxide superconductor thin film smooth. CONSTITUTION:The substantial part of the surface of a complex oxide superconductor thin film including mainly a complex oxide shown as the formula I is formed to be smooth. In the formula I, element alpha is Ba or Sr, and x is a number to satisfy 0.01<=x<=0. In this case, the substantial part means the major part of the surface except a partial void, a detect, and the like inevitable when the oxide is evaporated physically in a large area generally. In such a composition, a membrane of a complex oxide superconductive material with a high critical current density Jc can be obtained. |
