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首页> 外文期刊>Physica, C. Superconductivity and its applications >Observation of the flux line lattice and crystal defects in Bi-Sr-Ca-Cu-O single crystals
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Observation of the flux line lattice and crystal defects in Bi-Sr-Ca-Cu-O single crystals

机译:Bi-Sr-Ca-Cu-O单晶的磁通线晶格和晶体缺陷的观察

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We have observed flux line lattice (FLL) structure in two different types of Bi2Sr2CaCu2O8+delta (Bi-2212) single crystals with different pinning by using a Bitter decoration technique. We have also observed the microstructure and analyzed local chemical composition with wave dispersive spectroscopic analyses. In a low J(c), sample, we found two types of line defects, one with Ca-rich and the other with Ca-deficient. These defects extended almost parallel to the growth direction, which caused a distortion in the FLL structure. In contrast, no such defects were observed in the matrix in a high-J(c) sample, and a relatively ordered FLL was observed. (C) 2003 Elsevier B.V. All rights reserved. [References: 11]
机译:我们已经通过使用Bitter装饰技术观察了两种不同钉扎方式不同的Bi2Sr2CaCu2O8 +δ(Bi-2212)单晶中的流线晶格(FLL)结构。我们还观察了金相组织,并用波谱分析法分析了局部化学成分。在低J(c)样本中,我们发现了两种类型的线缺陷,一种是富含Ca,另一种是缺乏Ca。这些缺陷几乎平行于生长方向延伸,这导致了FLL结构的变形。相反,在高J(c)样品的基质中未观察到此类缺陷,并且观察到相对有序的FLL。 (C)2003 Elsevier B.V.保留所有权利。 [参考:11]

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