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.
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收藏
页码：467 / 468
页数：2
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