Material Specification for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
Process: Solid State Reaction
Notes: "... samples... usual ceramic route with Bi2O3, PbO, CaCO3, Sr2CO3 and CuO as starting materials. Four batches of pellets with different compaction pressures... were prepared from the same calcined powder. Sintering of the pellets were performed at 840 °C in air for 120 hours, at the end of which the pellets were furnace cooled to room temperature."
Formula: Bi1.6Pb0.4Sr2Ca2Cu3Ox
Informal Name: Bi:2223
Chemical Family: Bi(Pb)-Sr-Ca-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Density (mass) for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
| Sample Number () |
Compaction Pressure (ton/cm2) |
Density (g cm-3) |
| A |
0.974 |
2.871 |
| B |
1.950 |
3.595 |
| C |
4.550 |
3.821 |
| D |
9.740 |
4.252 |
Measurement Method: Unknown density method
Cautions: Unevaluated Data
No measurement details were noted.
Critical Temperature for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
| Density (g/cm3) |
Critical Temperature (K) |
| 2.871 |
99.2 |
| 3.595 |
99.5 |
| 3.821 |
100.5 |
| 4.252 |
101.2 |
Measurement Method: Four-probe method
"Four probe a.c. technique employing a lock-in amplifier tuned at 10 Hz was used for the determination of electrical resistivities... The experiment was performed in an exchange gas cryostat fitted with a calibrated copper - constantam thermocouple. Resolution of the measured voltages were 0.01 µV."
Cautions: Evaluated Data
Resistivity (normal state) for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
| Density (g/cm3) |
Temperature (K) |
dR/dT (µΩ·cm·K-1) |
Resistivity (normal state) (mΩ·cm) |
| 2.871 |
300 |
10.70 |
3.84 |
| 3.595 |
300 |
9.58 |
3.64 |
| 3.821 |
300 |
7.94 |
2.93 |
| 4.252 |
300 |
6.73 |
2.54 |
Measurement Method: Four-probe method
"Four probe a.c. technique employing a lock-in amplifier tuned at 10 Hz was used for the determination of electrical resistivities... The experiment was performed in an exchange gas cryostat fitted with a calibrated copper - constantam thermocouple. Resolution of the measured voltages were 0.01 µV."
Cautions: Evaluated Data
Thermal Conductivity for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
| Density (g/cm3) |
Temperature (K) |
Thermal Conductivity (W m-1 K-1) |
| 4.252 |
12.2 |
0.14 |
| 4.252 |
25.0 |
0.25 |
| 4.252 |
43.9 |
0.42 |
| 4.252 |
59.7 |
0.53 |
| 4.252 |
73.4 |
0.55 |
| 4.252 |
95.8 |
0.48 |
| 4.252 |
98.8 |
0.47 |
| 4.252 |
123.3 |
0.51 |
| 4.252 |
147.8 |
0.55 |
| 2.871 |
13.2 |
0.12 |
| 2.871 |
26.2 |
0.24 |
| 2.871 |
41.1 |
0.34 |
| 2.871 |
59.9 |
0.44 |
| 2.871 |
73.6 |
0.45 |
| 2.871 |
91.2 |
0.44 |
| 2.871 |
99.0 |
0.42 |
| 2.871 |
148.1 |
0.47 |
| 3.595 |
11.8 |
0.13 |
| 3.595 |
20.8 |
0.20 |
| 3.595 |
33.5 |
0.32 |
| 3.595 |
49.7 |
0.43 |
| 3.595 |
71.4 |
0.50 |
| 3.595 |
100.3 |
0.47 |
| 3.595 |
126.5 |
0.50 |
| 3.595 |
150.9 |
0.54 |
| 3.821 |
15.4 |
0.16 |
| 3.821 |
30.8 |
0.29 |
| 3.821 |
50.6 |
0.41 |
| 3.821 |
71.4 |
0.46 |
| 3.821 |
90.4 |
0.44 |
| 3.821 |
101.2 |
0.44 |
| 3.821 |
150.9 |
0.51 |
Measurement Method: Steady state heat flow
"Thermal conductivity was measured by steady state heat flow method using pellet shaped specimens. Experiment was performed between 10 K and 150 K in a cryorefrigerator (APD, USA). One end of the sample was attached to the cold head of the cryorefrigerator and the other end to a small silver block containing a small heater. The sample was attached to the upper and lower blocks using silver paste containing high density of silver powder and was protected against radiation by a controlled radiation shield. Temperature difference (ΔT) was measured by a Au + 0.07% Fe Vs. Chromal differential thermocouple using model 181 Keithley Digital Nanovoltmeter. Heater power, for producing a small temperature gradient (ΔT) was supplied from a programmable constant current source (Advantest model TR 6142). Maximum estimated uncertainty in the measurement was between 3% to 4% over the reported temperature range."
Cautions: Evaluated Data
Digitized data were obtained from Figures 4 and 5 of the paper.
