Hts Logo

NIST High Temp. Superconducting Materials (HTS) Database:

NIST Standard Reference Database 62

Last Update to Data Content: 1996

DOI: https://doi.org/10.18434/T4KP8J

Bibliographic Information

Title: Frequency Dependence of the Surface Resistance in High- Temperature Superconductors
Author(s): D.W.Cooke, E.R.Gray, H.H.S.Javadi, R.J.Houlton, B.Rusnak, E.A.Meyer, P.N.Arendt, N.Klein, G.Muller, S.Orbach, et al.
Publication: Solid State Communications Volume: 73 Issue: 4 Year: 1990 Page(s): 297-300
Editor(s): Not Available
Publisher: Pergamon Press Ltd
Language: English
Notes: et al.= H.Piel, L.Drabeck, G.Gruner, J.Josefowicz, et al.
Keywords: Material Specification, Critical Temperature, Surface Resistance, Magnetic Susceptibility

Materials and Properties

Y:123; [Y-Ba-Cu-O]
Material Specification for Y:123; [Y-Ba-Cu-O] Process: Sputtering
Notes: "Using targets composed of Y, BaF2, and Cu, thin films of YBa2Cu3FxOy were deposited onto a single-crystal (001) LaGaO3 substrate (2.54 cm in diameter) by magnetron co-sputtering... The films were deposited at ambient substrate temperature and were amorphous as deposited. To oxidize and convert the films to the crystalline superconducting phase, they were annealed in wet O2 at 850 °C for 1 h followed by cooling in pure O2 at 1.5 °C/min... The composition of this film, as determined by Rutherford backscattering analysis, is YBa2Cu3.3Ox."
Formula: YBa2Cu3.3Ox
Informal Name: Y:123
Chemical Family: Y-Ba-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form: Thin Film

Critical Temperature for Y:123; [Y-Ba-Cu-O]
Critical Temperature (K)
90
Measurement Method: Magnetic susceptibility method
"Additional characterization consisted of measuring the magnetic susceptibility (diamagnetic shielding) of the film." No additional measurement details were noted.

Cautions: Unevaluated Data
Surface Resistance for Y:123; [Y-Ba-Cu-O]
Frequency (GHz) Temperature (K) Surface Resistance (mΩ)
22 17 3.2
22 51 5.2
22 73 18
22 85 210
22 91 2000
86 26 26
86 43 44
86 66 120
86 82 890
86 89 3600
86 93 6100
86 93 10200
86 106 14000
86 120 15000
148 5 100
148 36 180
148 62 470
148 82 1800
148 86 3000
Measurement Method: Surface resistance method
"The surface resistance of this film was measured at three different frequencies (22, 86, and 148 GHz) as a function of temperature using the same experimental technique. The (2.54 cm = 1 inch) round sample was first measured in the 22-GHz cavity and then cut into smaller 1-cm2 pieces for measurements at 86 and 148 GHz. In each case the end wall of a crylindrical copper cavity (TE01n mode family) was replaced by the superconducting sample... and the Q-value was measured. The surface resistance is computed from the difference in Q values of the bare cavity and the cavity with the superconducting end wall."

Cautions: Evaluated Data
Digitized data were obtained from Figure 3 of the paper.
Magnetic Susceptibility for Y:123; [Y-Ba-Cu-O]
Temperature (K) Magnetic Susceptibility (arbitrary)
5 -10.5
30 -10.3
61 -10.1
75 - 9.9
85 - 9.3
88 - 6.4
91 - 3.7
103 - 3.6
119 - 3.5
132 - 3.4
142 - 3.4
Measurement Method: Magnetic susceptibility method
"Additional characterization consisted of measuring the magnetic susceptibility (diamagnetic shielding) of the film." No additional measurement details were noted.

Cautions: Unevaluated Data
Digitized data were obtained from Figure 2 of the paper.