Material Specification for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
Process: Solid State Reaction
Notes: The authors cite U. Endo et al., Jpn. J. Appl. Phys., Vol. 27, L1476 (1988), and summarize the procedure as follows. "High purity (>99.9%) powders of Bi2O3, PbO, CaCO3, SrCO3 and CuO were weighed into appropriate stoichiometry (20 g in total)... The mixtures of powders were dissolved into 1N nitric-acid solution. This solution was then spray-dried into mixed nitrate powder with a commercial spray-dry apparatus. Subsequently, this powder was decomposed/calcined at 850 °C for 15 min in air flow. After that, the obtained oxides mixture was pressed into rectangular bars (3 mm by 2 mm by 20 mm) and sintered for about 100 h at 865 °C in 20% oxygen gas flow (the balance gas being nitrogen). Part of the above sintered bars were then wrapped in gold foil, encapsulated into evacuated (0.01 Pa = 10-4) quartz tubes and post-annealed at 790 °C for various periods. The heating and cooling rates were 300 °C/h... All samples subjected to post-annealing were encapsulated into evacuated quartz tubes except sample E, for which an oxygen pressure of (0.02 MPa = 0.2 atm) (at 790 °C) was used in the ampoule."
Formula: Bi1.85Pb0.35Sr2Ca2Cu3.1Ox
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:
Crystallography for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
| Crystal System: | Tetragonal |
| Formula Units per Cell: | |
| Space Group: |
|
Cell Parameters
| Sample Number () |
Annealing Time (h) |
Temp
K
|
a
Å
|
b
Å
|
c
Å
|
| A |
0 |
296 |
5.404 |
-- |
37.085 |
| B |
60 |
296 |
5.411 |
-- |
37.121 |
| C |
120 |
296 |
5.409 |
-- |
37.141 |
| D |
200 |
296 |
5.410 |
-- |
37.167 |
| E |
200 |
296 |
5.402 |
-- |
37.090 |
Measurement Method: X-ray diffraction
"The X-ray diffraction analysis was performed...with an X-ray diffractometer (MAC Science: Model MPX18) using CuKα radiation." No additional measurement details were noted.
Cautions: Evaluated Data
Critical Temperature for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
| Sample Number () |
Annealing Time (h) |
Critical Temperature (K) |
| A |
0 |
110 |
| B |
60 |
112 |
| C |
120 |
114 |
| D |
200 |
115 |
| E |
200 |
110 |
Measurement Method: SQUID magnetometer
"DC magnetization measurements were performed using a SQUID magnetometer (Quantum Design: Model MPMS) by the field cooling mode with a magnetic field of (796 A/m = 10 Oe)." No additional measurement details were noted.
Cautions: Evaluated Data
Resistivity (normal state) for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
| Sample Number () |
Temperature (K) |
Resistivity (normal state) (mΩ·cm) |
| A |
104 |
0.00 |
| A |
109 |
0.54 |
| A |
114 |
0.88 |
| A |
121 |
1.00 |
| A |
126 |
1.06 |
| A |
132 |
1.08 |
| A |
136 |
1.10 |
| A |
142 |
1.16 |
| A |
146 |
1.18 |
| D |
103 |
0.00 |
| D |
109 |
0.01 |
| D |
113 |
0.95 |
| D |
116 |
1.42 |
| D |
121 |
1.58 |
| D |
127 |
1.68 |
| D |
132 |
1.73 |
| D |
137 |
1.79 |
| D |
143 |
1.85 |
| D |
146 |
1.87 |
Measurement Method: Four-probe method
"A standard four probes method using silver paste and a thin Cu lead was used to perform the resistivity measurement. The temperature was calibrated by a Pt sensor." No additional measurement details were noted.
Cautions: Evaluated Data
Digitized data were obtained from Figure 3 of the paper.
Magnetic Susceptibility for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
| Sample Number () |
Temperature (K) |
Magnetic Susceptibility (arbitrary) |
| A |
5 |
-0.0045 |
| A |
20 |
-0.0045 |
| A |
40 |
-0.0045 |
| A |
80 |
-0.0045 |
| A |
96 |
-0.0042 |
| A |
105 |
-0.0023 |
| A |
107 |
-0.0012 |
| A |
108 |
0.000 |
| A |
110 |
0.000 |
| A |
120 |
0.000 |
| D |
5 |
-0.0047 |
| D |
40 |
-0.0047 |
| D |
60 |
-0.0047 |
| D |
80 |
-0.0047 |
| D |
95 |
-0.0047 |
| D |
103 |
-0.0042 |
| D |
108 |
-0.0026 |
| D |
112 |
0.000 |
| D |
115 |
0.000 |
| D |
120 |
0.000 |
Measurement Method: SQUID magnetometer
"DC magnetization measurements were performed using a SQUID magnetometer (Quantum Design: Model MPMS) by the field cooling mode with a magnetic field of (796 A/m = 10 Oe)." No additional measurement details were noted.
Cautions: Evaluated Data
Digitized data were obtained from Figure 2 of the paper.
Thermoelectric Power for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
| Sample Number () |
Temperature (K) |
Thermoelectric Power (µV/K) |
| A |
96 |
0.1 |
| A |
107 |
0.1 |
| A |
111 |
4.8 |
| A |
116 |
7.8 |
| A |
122 |
8.2 |
| A |
141 |
8.0 |
| A |
185 |
6.1 |
| A |
230 |
4.2 |
| A |
233 |
3.6 |
| A |
246 |
3.8 |
| A |
255 |
2.9 |
| A |
262 |
2.9 |
| A |
264 |
2.5 |
| A |
271 |
2.5 |
| A |
310 |
1.2 |
| D |
96 |
0.1 |
| D |
112 |
0.1 |
| D |
116 |
10.4 |
| D |
121 |
12.5 |
| D |
125 |
13.0 |
| D |
161 |
12.1 |
| D |
192 |
10.2 |
| D |
197 |
10.4 |
| D |
201 |
9.5 |
| D |
215 |
9.3 |
| D |
230 |
7.8 |
| D |
235 |
8.0 |
| D |
264 |
6.1 |
| D |
269 |
6.8 |
| D |
296 |
5.3 |
| D |
311 |
4.8 |
Measurement Method: Thermopower measurement
"The thermoelectric power (TEP) measurements were performed by a DC differential method in which the temperature gradient across the sample was measured using two pairs of copper-constantan thermocouples." No additional measurement details were noted.
Cautions: Evaluated Data
Digitized data were obtained from Figure 4 of the paper.
