The role of multilayering in the significant improvement of structural and superconducting properties in high-Tc films
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Date
2006-02-07
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
Australian Institute of Physics
Abstract
By introducing multilayered structures to YBa2Cu3O7 (YBCO) films,
significant improvement of superconducting and structural properties in the
obtained multilayers has been obtained. A sandwich-like system with three
main YBCO layers of ~300 nm thick and two additional NdBCO layers of
about ~50 nm thick in between the YBCO layers exhibits much smoother
surface compared to the YBCO films of the same thickness. It has critical
current density (Jc) which is not only significantly larger (by a factor > 3) than that obtained in YBCO films with the same thickness (1 μm), but also larger
than Jc in mono-layer YBCO films of any smaller thickness. The Jc
enhancement is observed in both low field and high field regions, which
attributed to a larger filling factor of the multilayer, better grain alignment and
additional formation of dislocations at the interfaces between the layers.
Description
Keywords
Films, Superconductors, Superconducting films, Thickness, Layers, Yields, Dislocations
Citation
Pan, A. V., Pysarenko, S. V., Roussel. M., Dou, S. X., Ionescu. M., (2006). The role of multilayering in the significant improvement of structural and superconducting properties in high-Tc films. Paper presented to the 30th Annual Condensed Matter and Materials Meeting, Wagga Wagga, 7-10 February 2006. Retrieved from: https://physics.org.au/wp-content/uploads/cmm/2006/cmm063.zip