DocumentCode :
843642
Title :
RF properties of (RE)Ba2Cu3O7-δ (RE=Er, Ho, and Dy) superconducting thin films for wireless communications
Author :
Peng, Luke S.-J. ; Moeckly, Brian H.
Author_Institution :
Supercond. Technol. Inc., Santa Barbara, CA, USA
Volume :
15
Issue :
2
fYear :
2005
fDate :
6/1/2005 12:00:00 AM
Firstpage :
3710
Lastpage :
3713
Abstract :
We have grown and optimized several thin-film materials similar to YBCO, but with Y replaced by an alternative rare earth element. Because many of these elements sublime rather than melt readily, compositional control of these materials during deposition can be more difficult than for YBCO, which has a relatively wide process window. However, using the deposition technique of reactive coevaporation (RCE), we are able to grow high quality, epitaxial (RE)Ba2Cu3O7-δ films on 2´´-diameter substrates. We will report on the growth conditions, crystal structure, and Tc values of these films. We will also discuss the Q values of lumped-element microwave resonators patterned from these films. We show that the excellent RF properties of our films make them suitable for use in wireless communications applications.
Keywords :
crystal structure; dysprosium compounds; erbium compounds; high-temperature superconductors; holmium compounds; superconducting epitaxial layers; superconducting microwave devices; superconducting resonators; superconducting transition temperature; vapour deposition; DyBa2Cu3O7-δ; ErBa2Cu3O7-δ; HoBa2Cu3O7-δ; RF properties; crystal structure; deposition technique; epitaxial films; growth condition; hgh-temperature superconductors; lumped-element microwave resonators; microwave properties; rare earth element; reactive coevaporation; superconducting thin films; superconductor materials growth; thin-film materials; wireless communications; Erbium; Manufacturing; Radio frequency; Substrates; Superconducting films; Superconducting materials; Superconducting thin films; Superconductivity; Wireless communication; Yttrium barium copper oxide; High-temperature superconductors; microwave properties; reactive coevaporation; superconductor materials growth; thin films;
fLanguage :
English
Journal_Title :
Applied Superconductivity, IEEE Transactions on
Publisher :
ieee
ISSN :
1051-8223
Type :
jour
DOI :
10.1109/TASC.2005.849406
Filename :
1440477
Link To Document :
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