Epitaxial YBa/sub 2/Cu/sub 3/O/sub 7- delta / thin films on LaMgAl/sub 11/O/sub 19/: new substrates with low dielectric losses

Pulsed laser ablation was used to deposit superconducting YBa/sub 2/Cu/sub 3/O/sub 7- delta / thin films with T/sub c/=89.5 K on an LaMgAl/sub 11/O/sub 19/ substrate. X-ray diffraction patterns show that the YBa/sub 2/Cu/sub 3/O/sub 7- delta / films were epitaxially grown with their c-axis perpendic...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 1993-03, Vol.3 (1), p.1429-1431
Main Authors: Xiong, G.C., Lian, G.J., Zhu, X., Li, J., Li, Y.J., Gan, Z.Z., Jing, D., Shao, K., Guo, H.Z.
Format: Article
Language:English
Subjects:
Dielectric constant
Dielectric losses
Dielectric substrates
Laser ablation
Optical pulses
Pulsed laser deposition
Sputtering
Superconducting epitaxial layers
Superconducting thin films
X-ray diffraction
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Summary:Pulsed laser ablation was used to deposit superconducting YBa/sub 2/Cu/sub 3/O/sub 7- delta / thin films with T/sub c/=89.5 K on an LaMgAl/sub 11/O/sub 19/ substrate. X-ray diffraction patterns show that the YBa/sub 2/Cu/sub 3/O/sub 7- delta / films were epitaxially grown with their c-axis perpendicular to the substrate surface. LaMgAl/sub 11/O/sub 19/ has low dielectric constant and small loss tangent. Using the LaMgAl/sub 11/O/sub 19/ substrates, YBa/sub 2/Cu/sub 3/O/sub 7- delta / microstrip resonators were fabricated.< >
ISSN:1051-8223
1558-2515
DOI:10.1109/77.233629