Material Specification for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
Process: Solid State Reaction
Notes: "Sintered polycrystalline samples...have been prepared by the well-established solid state reaction method. Powder samples of Bi2O3, SrCO3, CaCO3, CuO and PbO are mixed well in the required atomic proportion and calcined at 800 °C for about 2 h. The calcined material has been crushed, powdered and then made into pellets at a pressure of about 4 metric tons. The pellets are then sintered at 820 °C for nearly 100 h. All treatments are done in air and air quenching is done after sintering."
Formula: Bi2-xPbxSr2Ca2Cu3Oy
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]
| Density (g cm-3) |
| 4.01 ± 0.01 |
Measurement Method: Unknown density method
Cautions: Unevaluated Data
No measurement details were noted.
Thermal Diffusivity for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
| x of Pbx (formula units) |
Temperature (K) |
Thermal Diffusivity (10-6 m2 s-1) |
| 0.2 |
99 |
0.74 |
| 0.2 |
106 |
0.63 |
| 0.2 |
108 |
0.57 |
| 0.2 |
114 |
0.52 |
| 0.2 |
120 |
0.46 |
| 0.2 |
152 |
0.41 |
| 0.2 |
201 |
0.35 |
| 0.2 |
300 |
0.23 |
| 0.3 |
99 |
0.73 |
| 0.3 |
120 |
0.43 |
| 0.3 |
151 |
0.34 |
| 0.3 |
200 |
0.30 |
| 0.3 |
300 |
0.20 |
| 0.4 |
97 |
0.73 |
| 0.4 |
101 |
0.63 |
| 0.4 |
106 |
0.55 |
| 0.4 |
114 |
0.46 |
| 0.4 |
118 |
0.39 |
| 0.4 |
150 |
0.30 |
| 0.4 |
202 |
0.26 |
| 0.4 |
300 |
0.18 |
| 0.5 |
97 |
0.37 |
| 0.5 |
112 |
0.32 |
| 0.5 |
120 |
0.26 |
| 0.5 |
150 |
0.22 |
| 0.5 |
202 |
0.19 |
| 0.5 |
300 |
0.12 |
Measurement Method: Photoacoustic method
The authors cite P. Charpentier et al., J. Appl. Phys., Vol. 53, 608 (1982), and summarize the procedure as follows. "The photoacoustic (PA) technique has been used... In the PA technique... one measures the chopping frequency dependence of the PA amplitude and phase. For a sample of appropriate thickness, I
c, as the chopping frequency is increased the sample goes from a thermally thin regime to a thermally thick one. The frequency at which the crossover takes place, called the characteristic frequency f
c, is related to the thermal diffusivity of the sample..."
Cautions: Evaluated Data
Digitized data were obtained from Figure 1 of the paper.
Specific Heat for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
| x of Pbx (formula units) |
Specific Heat (J kg-1 K-1) |
| 0.2 |
497 ± 4 |
| 0.3 |
502 ± 2 |
| 0.4 |
497 ± 3 |
| 0.5 |
505 ± 5 |
Measurement Method: DSC ratio method
The authors cite M.J. O'Neil, Anal. Chem., Vol. 38, 1331 (1966), and summarize the procedure as follows. "The specific heat of these samples has been determined by the ratio method using a differential scanning calorimeter with sapphire as the reference sample. The method gives an accuracy better than 1%." No additional measurement details were noted.
Cautions: Evaluated Data
