Material Specification for Tl:1223; [Tl-Ba-Ca-Cu-O]
Process: Solid State Reaction
Notes: "The samples were prepared using reagent grade oxides (Tl2O3, CuO) and carbonates (CaCO3, BaCO3) in quantities to satisfy the nominal composition 2223. Nevertheless, the dominant phase was the 115 K 1223 phase."
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:
Resistivity (normal state) for Tl:1223; [Tl-Ba-Ca-Cu-O]
| Temperature (K) |
Resistivity (normal state) (mΩ·cm) |
| 89 |
0.0 |
| 101 |
0.0 |
| 107 |
1.8 |
| 111 |
6.5 |
| 116 |
9.0 |
| 200 |
15.9 |
| 260 |
20.4 |
Measurement Method: Four-probe method
"... the parallelepiped shape sample, 1 x 4 x 13 mmm
3, was clip-linked to a heat sink to one of its end while a heater was attached to the other end. The temperature gradient was measured by means of an Fe doped Au vs chromel thermocouple. The four-probe arrangement was done over silver sputtered bars on the sample to improve both thermal and electric contacts. A single set-up allows measurements of the resistivity and thermopower simultaneously with the thermal conductivity. For temperatures lower than 25 K the classical steady-state method was used. Above this temperature a dynamical method was used."
Cautions: Evaluated Data
Digitized data were obtained from Figure 1 of the paper.
Thermal Conductivity for Tl:1223; [Tl-Ba-Ca-Cu-O]
| Temperature (K) |
Thermal Conductivity (W m-1 K-1) |
| 2 |
0.011 |
| 3 |
0.026 |
| 5 |
0.063 |
| 10 |
0.14 |
| 20 |
0.25 |
| 50 |
0.44 |
| 100 |
0.59 |
Measurement Method: Four-probe method
"... the parallelepiped shape sample, 1 x 4 x 13 mmm
3, was clip-linked to a heat sink to one of its end while a heater was attached to the other end. The temperature gradient was measured by means of an Fe doped Au vs chromel thermocouple. The four-probe arrangement was done over silver sputtered bars on the sample to improve both thermal and electric contacts. A single set-up allows measurements of the resistivity and thermopower simultaneously with the thermal conductivity. For temperatures lower than 25 K the classical steady-state method was used. Above this temperature a dynamical method was used."
Cautions: Evaluated Data
Digitized data were obtained from Figure 3 of the paper.
Thermoelectric Power for Tl:1223; [Tl-Ba-Ca-Cu-O]
| Temperature (K) |
Thermoelectric Power (µV/K) |
| 88 |
0.0 |
| 104 |
0.1 |
| 108 |
0.9 |
| 109 |
2.0 |
| 111 |
3.2 |
| 113 |
4.8 |
| 116 |
5.9 |
| 130 |
6.3 |
| 157 |
6.2 |
| 190 |
5.5 |
| 218 |
4.7 |
| 244 |
3.8 |
| 275 |
2.9 |
Measurement Method: Four-probe method
"... the parallelepiped shape sample, 1 x 4 x 13 mmm
3, was clip-linked to a heat sink to one of its end while a heater was attached to the other end. The temperature gradient was measured by means of an Fe doped Au vs chromel thermocouple. The four-probe arrangement was done over silver sputtered bars on the sample to improve both thermal and electric contacts. A single set-up allows measurements of the resistivity and thermopower simultaneously with the thermal conductivity. For temperatures lower than 25 K the classical steady-state method was used. Above this temperature a dynamical method was used."
Cautions: Evaluated Data
Digitized data were obtained from Figure 2 of the paper.
