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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: Transport Critical Currents in Spray Pyrolzed Films of TlBa2Ca2Cu3Oz on Polycrystalline Zirconia Substrates
Author(s): J.E. Tkaczyk, J.A. DeLuca, P.L. Karas, J. Bednarczyk, M.F. Garbauskas, R.H. Arendt, and K.W. Lay
Publication: Applied Physics Letters Volume: 61 Issue: 5 Year: 1992 Page(s): 610-612
Editor(s): Not Available
Publisher: American Institute of Physics
Language: English
Notes: Not Available
Keywords: Material Specification, Critical Current Density, Irreversibility Field

Materials and Properties

Tl:1223; [Tl-Ba-Ca-Cu-O]
Material Specification for Tl:1223; [Tl-Ba-Ca-Cu-O] Process: Spray Pyrolysis
Notes: The authors cite J.A. Deluca et al., J. Mater. Res., Vol. 6, 1415 (1991), and summarize the procedure as follows. "Partially stabilized zironia with grain size (about) 0.3 µm was used as the substrate. Optical micrographs show the samples to have a platelike grain morphology with grain diameters of 10-100 µm. X-ray diffraction... indicates the 1223 phase to be dominant with a large degree of uniaxial alignment of the c-axis normal to the substrate... The film thicknesses are typically 2-3 µm."
Formula: TlBa2Ca2Cu3Ox
Informal Name: Tl:1223
Chemical Family: Tl-Ba-Ca-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 Tl:1223; [Tl-Ba-Ca-Cu-O]
Temperature (K) Magnetic Field (T) Critical Current Density (kA/cm2)
4.2 0.02 555
4.2 0.05 356
4.2 0.1 246
4.2 0.2 197
4.2 0.5 158
4.2 1.0 135
4.2 2.0 126
4.2 5.0 116
4.2 9.0 108
20 0.02 415
20 0.05 247
20 0.1 171
20 0.2 147
20 0.5 109
20 1.0 109
20 2.0 101
20 5.0 87
20 9.0 80
40 0.02 288
40 0.05 160
40 0.1 119
40 0.2 82
40 0.5 71
40 1.0 61
40 2.0 60
40 5.0 42
40 9.0 25
60 0.02 172
60 0.05 77
60 0.1 57
60 0.2 42
60 0.5 34
60 1.0 27
60 2.0 15
60 2.5 10
60 3.0 7
60 3.3 4
60 3.9 2
60 4.5 1
60 5.0 0.25
77 0.02 62
77 0.05 26
77 1.0 16
77 0.2 12
77 0.5 8
77 0.8 6
77 1.0 5
77 1.2 3
77 1.4 1
77 1.8 0.4
90 0.02 24
90 0.05 9
90 0.1 7
90 0.2 4
90 0.5 0.6
90 0.6 0.2
Measurement Method: Four-probe method
"Transport measurements were made with a 4-pt configuration of the leads across a 0.4 mm x 0.1 mm bridge etched into the film... the low field critical current (is) defined at an electric field criterion of 1 µV/cm... the magnetic field dependence of Jc... (was reported for) the field applied perpendicular to the film surface... The irreversibility field was defined by the B-T point where the critical current falls below 103 A/cm2."

Cautions: Evaluated Data
Digitized data were obtained from Figure 4 of the paper.
Irreversibility Field for Tl:1223; [Tl-Ba-Ca-Cu-O]
Temperature (K) Irreversibility Field (T)
40 20.6
60 4.6
77 1.6
90 0.5
Measurement Method: Four-probe method
"Transport measurements were made with a 4-pt configuration of the leads across a 0.4 mm x 0.1 mm bridge etched into the film... the low field critical current (is) defined at an electric field criterion of 1 µV/cm... the magnetic field dependence of Jc... (was reported for) the field applied perpendicular to the film surface... The irreversibility field was defined by the B-T point where the critical current falls below 103 A/cm2."

Cautions: Evaluated Data