Epitaxial multilayers of YBa2Cu3Ox/PrBa2Cu3Ox/YBa2Cu3Ox


Gao, J. and Aarnink, W.A.M. and Gerritsma, G.J. and Rijnders, A.J.H.M. and Rogalla, H. and Hakkens, F. and Coene, W. and Gijs, M.A.M. (1991) Epitaxial multilayers of YBa2Cu3Ox/PrBa2Cu3Ox/YBa2Cu3Ox. Physica C: Superconductivity, 177 (4-6). pp. 384-392. ISSN 0921-4534

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Abstract:Heteroepitaxial multilayers of YBa2Cu3Ox/PrBa2Cu3Ox/YBa2Cu3Ox have been made by sputtering. No degradation of the transition temperature and the critical current density due to the presence of the PrBa2Cu3Ox layer could be observed. By using high-resolution transmission electron microscopy the atomic details of the interfaces and the defect structures have been studied. These films showed a perfectly stacked lattice just above the interface between film and substrate. The orientation of the c-axis perpendicular to the substrate was fairly perfect. The structural faults are mainly distributed in the middle and overlying layers. The dominant defects in our films seems to be stacking faults which give rise to nano-sized coherent anti-phase domains with the 1-2-3 structure. Rutherford backscattering spectroscopy, secondary ion mass spectroscopy, and scanning Auger microscopy were used to examine the interdiffusion between layers. Within the experimental resolution of 7 nm no interdiffusion is visible between YBa2Cu3Ox and PrBa2Cu3Ox layers.
Item Type:Article
Copyright:© 1991 Elsevier Science
Science and Technology (TNW)
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Link to this item:http://purl.utwente.nl/publications/24347
Official URL:https://doi.org/10.1016/0921-4534(91)90495-K
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