Levitation force of a stack of epitaxial YBa2Cu3O7-δ films

被引：0
|
作者：
Lucke, B. [1 ]
Kurschner, H.-G. [1 ]
Lehndorff, B. [1 ]
Lenkens, M. [1 ]
Piel, H. [1 ]
机构：
[1] Bergische Universitat Wuppertal, Wuppertal, Germany
来源：
Physica C: Superconductivity and its Applications | 1996年 / 259卷 / 1-2期
关键词：
Epitaxial growth - Films - Magnetic properties - Oxide superconductors - Oxides - Stiffness;
D O I：
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中图分类号：
学科分类号：
摘要：
The levitation force of three epitaxial YBa2Cu3O7-δ films and a stack made of these films was measured. The films show a very high force density of about 100 Ncm-3 and a large hysteresis of the force versus distance relation. The filmstack provides a levitation force which is nearly as high as the sum of the forces of the single films. The magnetic stiffness of the stack is comparable to that of melt-textured bulk samples and shows a crossover from a B1.5 to a B2 dependence as observed on single films and melt-textured samples. The use of filmstacks for levitation devices may offer several specific advantages.
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页码：151 / 156
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