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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: Polycrystalline Y1Ba2Cu3O7-δ Films Prepared by CVD Method
Author(s): K. Watanabe, S. Awaji, H. Yamane, H. Kurosawa, T. Hirai, N. Kobayashi, and Y. Muto
Publication: Advances in Cryogenic Engineering (Materials) Volume: 38 Issue: Not Available Year: 1992 Page(s): 991-996
Editor(s): F.R. Fickett and R.P. Reed
Publisher: Plenum Press
Language: English
Notes: Not Available
Keywords: Material Specification, Critical Current Density, Critical Flux Density Hc2

Materials and Properties

Y:123; [Y-Ba-Cu-O]
Material Specification for Y:123; [Y-Ba-Cu-O] Process: Chemical Vapor Deposition
Notes: "Polycrystalline YBCO films were prepared by CVD using polycrystalline YSZ and single-crystal MgO(100) substrates. The films were deposited at 850 °C for an hour in an Ar carrier gas with oxygen partial pressure of (440 Pa = 3.3 torr)."
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 Current Density for Y:123; [Y-Ba-Cu-O]
Temperature (K) Hysteresis Direction () Magnetic Field (T) Critical Current Density (kA/cm2)
4.2 up 0.9 1.5
4.2 up 2.1 1.3
4.2 up 2.9 1.1
4.2 up 5.2 1.0
4.2 up 9.8 0.82
4.2 up 14.7 0.77
4.2 up 19.9 0.81
4.2 down 0.9 2.7
4.2 down 2.1 2.1
4.2 down 2.9 1.8
4.2 down 4.9 1.6
4.2 down 9.8 1.1
77 up 0 1.1
77 up 0.8 0.090
77 up 3.1 0.047
77 up 9.9 0.011
77 up 14.7 0.0053
77 down 0 0.54
77 down 0.2 0.13
77 down 1.9 0.059
77 down 5.0 0.029
77 down 10.2 0.011
Measurement Method: Four-probe method
"The samples were patterned into a bridge with typical dimensions of 1 µm thick, 1 mm wide, and 1 mm long. Au-sputtered terminals were used to decrease the contact resistance. B and Jc measurements were done in a four-probe configuration with R=0 and 1 µV/cm criteria, respectively. Transport currents always flowed normal to the applied field... Jc measurements were performed immersed in liquid helium or nitrogen."

Cautions: Evaluated Data
Digitized data were obtained from Figure 3 of the paper.
Critical Flux Density Hc2 for Y:123; [Y-Ba-Cu-O]
Field Direction () Temperature (K) Crit.Mag.Flux Density Hc2 (T)
ab-plane 85.0 21
ab-plane 86.4 13
ab-plane 88.3 5
ab-plane 89.3 2
ab-plane 89.6 1
c-axis 72.9 13
c-axis 74.4 11
c-axis 79.5 7
c-axis 80.7 5
c-axis 83.6 3
c-axis 87.2 1
Measurement Method: Four-probe method
"The samples were patterned into a bridge with typical dimensions of 1 µm thick, 1 mm wide, and 1 mm long. Au-sputtered terminals were used to decrease the contact resistance. B and Jc measurements were done in a four-probe configuration with R=0 and 1 µV/cm criteria, respectively. Transport currents always flowed normal to the applied field... Jc measurements were performed immersed in liquid helium or nitrogen."

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