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: Penetration Depth Lambda(T) of YBa2Cu3O7-δ Films Determined from the Kinetic Inductance
Author(s): J. Lee and T.R. Lemberger
Publication: Applied Physics Letters Volume: 62 Issue: 19 Year: 1993 Page(s): 2419-2421
Editor(s): Not Available
Publisher: American Institute of Physics
Language: English
Notes: Not Available
Keywords: Material Specification, Critical Temperature, Penetration Depth

Materials and Properties

Y:123; [Y-Ba-Cu-O]
Material Specification for Y:123; [Y-Ba-Cu-O] Process: Solid State Reaction
Notes: "Our films are prepared by codeposition of Y, BaF2, and Cu onto a SrTiO3 (100) substrate, with a post-anneal in wet oxygen at 800°C for 90 min in a tube furnace. The sample is patterned into a meander line (100 mm x 80 µm x 17.5 cm) by standard photolithography and etching with dilute nitric acid (<0.1%). silver contacts are then deposited on the film and annealed under flowing oxygen at 450 °c for an hour."
Formula: YBa2Cu3O7-x
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)
88
Measurement Method: Electrical Resistance

Cautions: Unevaluated Data
No measurement details were noted. The authors indicated Tc as the zero resistance temperature.
Penetration Depth for Y:123; [Y-Ba-Cu-O]
Temperature (K) Penetration Depth (σ)
3 2210
38 2490
56 2930
68 3660
74 4340
77 4970
Measurement Method: Kinetic inductance
"A meander line geometry increases the kinetic inductance relative to the magnetic inductance. The line consists of 26 folds of 0.67 cm long segments spaced by 80 µm... Current and voltage leads connect to the lower contact pads... with additional voltage leads... at the upper pad for diagnostic purposes. A current density from 750 A/cm2 to 2x104 A/cm2 is applied at 30 kHz; it is monitored by the voltage drop across the standard resistor..."

Cautions: Evaluated Data
Digitized data were obtained from Figure 4 of the paper.