Material Specification for Tl:1223; [Tl(Pb)-Sr-Ca-Cu-O]
Process: Solid State Reaction
Notes: The authors cite M.A. Subramanian et al., Science, Vol. 242, 249 (1991), and summarize the procedure as follows." "Polycrystalline samples... were prepared by the usual solid-state reaction... Bar-shaped samples (1.5 mm x 2 mm x 10 mm) were cut from the synthesized pellets... In order to rule out the contribution of intergrain Jc, these samples were ground into fine powders and mixed into wax to ensure the separation of individual grains... The results of the magnetic measurements performed on both bulk and powdered samples show no significant difference."
Formula: Tl0.5Pb0.5Sr2Ca2Cu3O9
Informal Name: Tl:1223
Chemical Family: Tl(Pb)-Sr-Ca-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Critical Temperature for Tl:1223; [Tl(Pb)-Sr-Ca-Cu-O]
| Critical Temperature (K) |
| 115 |
Measurement Method: Four-probe method
"A standard four-point probe method was used for the electrical-resistivity measurement." No additional measurement details were noted.
Cautions: Evaluated Data
Critical Current Density for Tl:1223; [Tl(Pb)-Sr-Ca-Cu-O]
| Temperature (K) |
Magnetic Field (T) |
Critical Current Density (kA/cm2) |
| 4.2 |
1.0 |
11000 |
| 4.2 |
2.0 |
8000 |
| 4.2 |
4.0 |
6300 |
| 4.2 |
6.0 |
5700 |
| 4.2 |
8.2 |
5600 |
| 4.2 |
10.1 |
5300 |
| 4.2 |
11.5 |
5100 |
| 77 |
1.1 |
120 |
| 77 |
1.8 |
63 |
| 77 |
2.8 |
21 |
| 77 |
4.0 |
4 |
| 77 |
5.3 |
2 |
| 77 |
6.8 |
0 |
| 77 |
10.0 |
0 |
Measurement Method: Vibrating sample magnetometer
"Magnetic-hysteresis measurements were performed with a vibrating sample magnetometer (VSM3001, Oxford Instruments)... The intragrain critical-current density, J
c, has been estimated from the Bean critical-state model." No additional measurement details were noted.
Cautions: Evaluated Data
Digitized data were obtained from Figures 2 and 4 of the paper.
