Title :
Microwave surface resistance of YBaCuO superconducting films laser-ablated on copper substrates
Author :
Liu, J. ; Asano, Katsunori ; Ezura, E. ; Fukutomi, M. ; Inagaki, S. ; Isagawa, S. ; Komori, K. ; Kumagai, S. ; Nakanishi, H. ; Tosa, M. ; Yoshihara, K.
Author_Institution :
KEK, Nat. Lab. for High Energy Phys., Ibaraki, Japan
Abstract :
In order to apply high-Tc material to a real accelerator cavity, it may be indispensable that the material is deposited on metal substrate. It is now possible to align the c axis of YBa2Cu3Oy (YBCO) film perpendicular to a metal surface. Furthermore, the constituent crystals can be in-plane aligned with a laser ablation technique following the formation of yttria-stabilized-zirconia (YSZ) buffer layer of controlled grain orientation. Using a demountable copper cavity operated at 13 GHz in the TE011 mode, the microwave surface resistance was measured over a temperature range from 11 K to 300 K
Keywords :
accelerator cavities; copper; pulsed laser deposition; superconducting cavity resonators; superconducting thin films; ytterbium compounds; 11 to 300 K; 13 GHz; TE011 mode; YBaCuO superconducting films; YBaCuO-Cu; accelerator cavity; constituent crystals; controlled grain orientation; copper substrates; demountable copper cavity; high-Tc material; laser ablation technique; microwave surface resistance; yttria-stabilized-zirconia buffer layer; Crystalline materials; Inorganic materials; Laser ablation; Laser modes; Substrates; Superconducting films; Superconducting materials; Surface resistance; Temperature measurement; Yttrium barium copper oxide;
Conference_Titel :
Particle Accelerator Conference, 1995., Proceedings of the 1995
Conference_Location :
Dallas, TX
Print_ISBN :
0-7803-2934-1
DOI :
10.1109/PAC.1995.505316
