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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: Critical Current Density in Quenched Oxygen Deficient YBa2Cu3O7-δ
Author(s): M. Daumling
Publication: Physica C Volume: 184 Issue: Not Available Year: 1991 Page(s): 13-20
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: Solid State Reaction
Notes: "Polycrystalline sintered specimens were prepared using a solid state route. Jet-milled powders were pressed into pellets and then sintered in flowing oxygen at 950 °C, after slowly (1 K/min) ramping up to the sintering temperature to burn off carbon. The first batch had a relative density of about 90%, with a grain size of about 3 µm. The pores were not connected... For the second batch the final relative density was 67%, with a grain size of about 2 µm... In order to produce specimens with varying oxygen content the sintered pellet was broken into smaller pieces, which were annealed at various temperatures up to 650 °C in purified oxygen."
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:

Critical Temperature for Y:123; [Y-Ba-Cu-O]
x of O7-x (formula units) Critical Temperature (K)
0.02 92.3
0.04 91.7
0.07 88.1
0.07 82.2
0.12 67.4
0.19 62.1
0.31 55.6
Measurement Method: SQUID magnetometer
"Magnetic measurements were carried out in a commercial Quantum Design SQUID magnetometer. All loops were measured using the hysteresis option. A scan length of 2 cm was used in order to keep field variations during the scan to a minimum. The field variation at 5 T is about 0.25 mT." No additional measurement details were noted.

Cautions: Evaluated Data
Digitized data were obtained from Figure 1 of the paper.
Critical Current Density for Y:123; [Y-Ba-Cu-O]
x of O7-x (formula units) Temperature (K) Magnetic Field (T) Critical Current Density (kA/cm2)
0.02 10 0.3 5389
0.02 10 1.5 1997
0.02 10 3.0 1286
0.02 10 4.2 1062
0.02 10 5.2 934
0.02 20 0.3 3290
0.02 20 1.0 1222
0.02 20 2.2 697
0.02 20 3.4 540
0.02 20 5.2 474
0.02 30 0.3 1776
0.02 30 1.0 659
0.02 30 2.2 400
0.02 30 3.5 311
0.02 30 5.2 272
0.02 40 0.3 1084
0.02 40 1.0 403
0.02 40 2.0 277
0.02 40 3.3 202
0.02 40 4.5 167
0.02 50 0.3 749
0.02 50 1.0 261
0.02 50 2.0 159
0.02 50 3.0 131
0.02 50 3.5 116
0.02 60 0.3 457
0.02 60 1.0 181
0.02 60 1.5 103
0.02 60 2.5 75
0.02 70 0.3 247
0.02 70 0.5 133
0.02 70 1.0 86
0.02 70 1.3 52
0.02 80 0.3 104
0.02 80 0.5 53
0.07 10 0.2 610
0.07 10 1.0 328
0.07 10 2.2 226
0.07 10 3.5 176
0.07 50 2.0 40
0.07 60 0.2 69
0.07 60 0.5 46
0.07 60 1.0 31
0.07 70 0.2 39
0.07 70 0.5 28
0.07 70 0.5 43
Measurement Method: SQUID magnetometer
"Magnetic measurements were carried out in a commercial Quantum Design SQUID magnetometer. All loops were measured using the hysteresis option. A scan length of 2 cm was used in order to keep field variations during the scan to a minimum. The field variation at 5 T is about 0.25 mT." No additional measurement details were noted.

Cautions: Evaluated Data
Digitized data were obtained from Figures 3 and 4 of the paper.