DISLOCATION NETWORKS IN MELT-TEXTURED VANADIUM-DOPED BSCCO SUPERCONDUCTOR WITH STOICHIOMETRIC RATIO BI1.85V0.15SRICALCU3OY

被引：6
作者：
FUNG, PCW [1 ]
CHOW, JCL [1 ]
DU, ZL [1 ]
机构：
[1] ZHONGSHAN UNIV,DEPT PHYS,CANTON,PEOPLES R CHINA
来源：
SUPERCONDUCTOR SCIENCE & TECHNOLOGY | 1994年 / 7卷 / 06期
关键词：
D O I：
10.1088/0953-2048/7/6/011
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
Regular and irregular dislocation networks have been observed under a transmission electron microscope (TEM) in melt-textured Bi1.85V0.15Sr2Ca2Cu3Oy superconductors. From our previous experience in TEM observation, such dislocation networks cannot be found in polycrystalline and melt-textured Bi2Sr2Ca2Cu3Oy superconductors. We believe that these planar defects arise from the substitution of vanadium atoms, rendering a stronger bonding between the V and O atoms. The networks are conjectured to be possible planar pinning centres for magnetic flux in the superconducting state.
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页码：397 / 401
页数：5
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