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首页> 外文期刊>Physica, C. Superconductivity and its applications >A comparison of [001] low-angle tilt grain boundaries of (100) and (110) grain boundary planes in YBa2Cu3O7-delta coated conductors
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A comparison of [001] low-angle tilt grain boundaries of (100) and (110) grain boundary planes in YBa2Cu3O7-delta coated conductors

机译：YBa2Cu3O7-δ涂层导体中（100）和（110）晶界平面的[001]低角度倾斜晶界的比较

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摘要

The microstructure and grain boundary structure in YBa2Cu3O7-delta (YBCO) thick film coated conductors are characterized by transmission electron microscopy. The films contain low-angle [001] tilt grain boundaries with periodic arrays of edge dislocations parallel to the c-axis. A majority of the grain boundary planes are of either the (100) or the (110) type. Grain boundary dislocations (GBDs) with a [100] Burgers vector were observed in tilt boundaries with (100) boundary planes. However, partial dislocations, separated by stacking faults, were found at boundaries with near (110) grain boundary planes. Extensive g . b and g . R analyses confirmed the partials to be of 1/2[110] type. These results suggest that the characteristics of dislocation structures, which have been proposed in various grain boundary-based flux-pinning models, depend not only on the misorientation angle theta, but also on the types of grain boundary plane. The effect of dissociated GBDs on the transport properties of low angle grain boundaries in YBCO coated conductors is discussed. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 17]
机译：用透射电子显微镜对YBa2Cu3O7-δ（YBCO）厚膜涂层导体的微观结构和晶界结构进行了表征。膜包含低角度[001]倾斜晶界，其边缘位错的周期阵列平行于c轴。大多数晶粒边界平面是（100）或（110）类型的。在具有（100）边界平面的倾斜边界中观察到具有[100] Burgers矢量的晶界错位（GBD）。然而，在具有接近（110）晶界平面的边界处发现了由堆垛层错分开的部分位错。广泛g。 b和g。 R分析确认部分为1/2 [110]类型。这些结果表明，在各种基于晶界的通量钉扎模型中提出的位错结构的特征不仅取决于取向差角θ，而且取决于晶界平面的类型。讨论了离解的GBD对YBCO涂层导体中低角度晶界传输特性的影响。 （C）2001 Elsevier Science B.V.保留所有权利。 [参考：17]

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