Dislocations in MgB2

被引：2
|
作者：
Jiang, N [1 ]
Jiang, B
Spence, JCH
Lee, S
Tajima, S
机构：
[1] Arizona State Univ, Dept Phys & Astron, Tempe, AZ 85287 USA
[2] Int Superconduct Technol Ctr, Supercond Res Lab, Koto Ku, Tokyo 1350062, Japan
来源：
PHILOSOPHICAL MAGAZINE LETTERS | 2003年 / 83卷 / 08期
关键词：
D O I：
10.1080/0950083031000137848
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The types of dislocation most commonly occurring in the superconductor MgB2 are investigated. Dislocations belonging to both the basal and the non-basal types have been observed. At 2 nm spatial resolution, dissociation of the basal dislocations into Shockley partials is not observed. The dislocation shapes are irregular, but many segments of dislocation are fairly straight. The core structure of the non-basal dislocations, with b = [0001] has also been observed by high-resolution electron microscopy. A step-like structure is suggested for this sessile dislocation.
引用
收藏
页码：495 / 501
页数：7
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