Effects of Yttrium Oxide Inclusions on the Orientation and Superconducting Properties of YBCO Films
Keywords:
MOCVD, epitaxy, lattice mismatch, ordered nanostructure, HT-superconductor.
Abstract
The formation of Y2O3 secondary phase in the films of YBa2Cu3O7 (YBCO) high-temperature
superconductor is of large interest because Y2O3 inclusions can increase the critical current
density (Jc) in YBCO films. We studied Y-rich and Y-poor YBCO films prepared by the MOCVD
method. Y2O3 phase appeared in the Y-rich films as small (20x10 nm) oriented particles distributed
throughout the YBCO films. It was found that at the same growth conditions Y-rich YBCO films grew
highly c-oriented, whereas in the Y-poor films both a- and c-oriented YBCO grains were present. The
Y-rich films exhibited better superconducting properties (Jc) because of better YBCO texture and
magnetic flux pinning on the Y2O3 inclusions
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References
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Published
2013-06-26
How to Cite
Moyzykh, M. E., Boytsova, O. V., Bertrand, L., Amelichev, V. A., Samoilenkov, S. V., Voloshin, I. F., Kaul, A. R., Paumier, F., & Gaboriaud, R. J. (2013). Effects of Yttrium Oxide Inclusions on the Orientation and Superconducting Properties of YBCO Films. Kondensirovannye Sredy I Mezhfaznye Granitsy = Condensed Matter and Interphases, 15(2), 91-98. Retrieved from https://journals.vsu.ru/kcmf/article/view/883
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