Influence of Sr doping on twin-wall structure and flux pinning of YBa2Cu3O7-δ single crystals

被引：14
|
作者：
Saito, K [1 ]
Nissen, HU
Beeli, C
Wolf, T
Schauer, W
Kupfer, H
机构：
[1] Swiss Fed Inst Technol, Festkorperphys Lab, CH-8093 Zurich, Switzerland
[2] Ecole Polytech Fed Lausanne, CIME, CH-1015 Lausanne, Switzerland
[3] Forschungszentrum Karlsruhe, Inst Tech Phys, D-76021 Karlsruhe, Germany
来源：
PHYSICAL REVIEW B | 1998年 / 58卷 / 10期
关键词：
D O I：
10.1103/PhysRevB.58.6645
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The twin textures of two differently synthesized types of YBa2Cu3O7-delta single crystals, differing strongly in their critical current density (j(c)) levels, have been investigated by high-resolution transmission electron microscopy. One type of crystal which has higher j(c) values and contains 1 at. % Sr shows twin lamellae with boundaries decorated by many small local strain fields. It is suggested that this twin boundary structure is due to Sr doping. The Sr clusters present in the lattice are assumed to enhance flux pinning, and thus to result in the higher j(c) values observed.
引用
收藏
页码：6645 / 6649
页数：5
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