Spiral growth and (110) twins in Bi2Sr2CaCu2Oy crystals

被引：1

作者：

Wang, XL ^{[1
]}

Yau, ST ^{[1
]}

Liu, HK ^{[1
]}

Dou, SX ^{[1
]}

机构：

[1] UNIV WOLLONGONG,DEPT MAT ENGN,INTELLIGENT POLYMER ENGN CTR,WOLLONGONG,NSW 2522,AUSTRALIA

来源：

PHYSICA C | 1997年 / 282卷

关键词：

D O I：

10.1016/S0921-4534(97)00316-X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Atomic force microscopy (AFM), X-ray diffraction, polarized microscopy and scanning electron microscopy (SEM) were used to characterise Bi2Sr2CaCu2Oy (Bi-2212) single crystals grown at the surface of KCl. The crystals growth were mainly controlled by a spiral growth mechanism. Morphologies of the growth spirals varied with growth conditions. Single, double and even multi-spirals with square and polygonized shapes were observed. (110) growth twins were found to co-exist with square shape single or multi-spirals and lead to the square shape growth spirals. The widths and heights of growth steps were determined to be 0.5-6 mu m and 3-5 unit cells by AFM.

引用

页码：467 / 468

页数：2

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