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: Effect of Pressure on the Critical Current Density of YBa2Cu3O7-δ Thin Films
Author(s): Q. Xiong, Y.Y. Xue, Y.Y. Sun, P.H. Hor, C.W. Chu, M.F. Davis, J.C. Wolfe, S.C. Deshmukh, and D.J. Economou
Publication: Physica C Volume: 205 Issue: Not Available Year: 1993 Page(s): 307-310
Editor(s): Not Available
Publisher: Elsevier Science Publishers B.V.
Language: English
Notes: Not Available
Keywords: Material Specification, Critical Temperature, Critical Current Density

Materials and Properties

Y:123; [Y-Ba-Cu-O]
Material Specification for Y:123; [Y-Ba-Cu-O] Process: Laser Ablation
Notes: The authors cite M.F. Davis et al., J. Appl. Phys., Vol. 69, 7182 (1991), and summarize the procedure as follows. "The... thin films examined in this study were prepared on SrTiO3 or LaAlO3 substrates by the laser ablation technique. By varying the deposition conditions, two types of c-oriented films of thickness... 2000 σ were obtained: type A was epitaxial, single crystal-like and type B was polycrystalline."
Formula: YBa2Cu3O7-x
Informal Name: Y:123
Chemical Family: Y-Ba-Cu-O
Chemical Class: Oxide
Structure Type:
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form: Thin Film

Critical Temperature for Y:123; [Y-Ba-Cu-O]
Pressure (GPa) Tc(onset) (K) Critical Temperature (K)
0.0 87.8 87.3
0.29 87.9 87.3
0.85 88.1 87.0
1.08 88.1 87.0
1.51 88.0 87.0
Measurement Method: Four-probe method
"A four-probe method was used to determined Jc and Tc. For these measurements, 10 µm x 1 mm thin film strips were patterned by the dry-etching technique. Electrical Pt-leads were attached to the strips with In-contacts with a typical contact resistance of... 1 Ω. A 1 µV/cm standard was used to measure the Jc. The hydrostatic pressure was generated by the clamp technique, using the Fluorinert (3M Industrial Chemical Co.) as the pressure medium. The pressure was determined by a superconducting Pb-manometer."

Cautions: Evaluated Data
Digitized data were obtained from Figure 1 of the paper.
Critical Current Density for Y:123; [Y-Ba-Cu-O]
Film Type () Pressure (GPa) Critical Current Density (kA/cm2)
A 0.0 1600
A 3.9 1680
A 8.9 1840
A 11.3 1890
A 13.6 1960
A 16.5 1920
A 0.0 1400
A 2.6 1500
A 6.5 1550
A 11.1 1640
B 0.0 48
B 4.6 51
B 8.5 53
B 0.0 790
B 2.8 840
B 8.5 910
B 10.8 930
B 15.1 960
Measurement Method: Four-probe method
"A four-probe method was used to determined Jc and Tc. For these measurements, 10 µm x 1 mm thin film strips were patterned by the dry-etching technique. Electrical Pt-leads were attached to the strips with In-contacts with a typical contact resistance of... 1 Ω. A 1 µV/cm standard was used to measure the Jc. The hydrostatic pressure was generated by the clamp technique, using the Fluorinert (3M Industrial Chemical Co.) as the pressure medium. The pressure was determined by a superconducting Pb-manometer."

Cautions: Evaluated Data
Digitized data were obtained from Figure 3 of the paper.