Material Specification for Bi:2212; [Bi-Sr-Ca-Cu-O]
Process: Solid State Reaction
Notes: "The sample was prepared by standard reaction of oxides. Stoichiometric amounts of Bi2O3, CaO3, SrCO3, and CuO were mixed and reacted at 850 °C for 1 week with several intermediate grindings. The reacted powder was pressed into pellets and sintered at 850 °C for 1 day."
Formula: Bi2Sr2CaCu2O8+x
Informal Name: Bi:2212
Chemical Family: Bi-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:2212; [Bi-Sr-Ca-Cu-O]
| Crystal System: | |
| Formula Units per Cell: | |
| Space Group: |
|
Cell Parameters
|
Temp
K
|
a
Å
|
b
Å
|
c
Å
|
| 296 |
5.41 |
5.42 |
30.93 |
Measurement Method: X-ray diffraction
Cautions: Unevaluated Data
No measurement details were noted.
Magnetic Susceptibility for Bi:2212; [Bi-Sr-Ca-Cu-O]
| Temperature (K) |
Magnetic Susceptibility (arbitrary) |
| 5 |
-0.60 |
| 16 |
-0.58 |
| 26 |
-0.56 |
| 35 |
-0.54 |
| 45 |
-0.52 |
| 55 |
-0.48 |
| 65 |
-0.41 |
| 70 |
-0.33 |
| 74 |
-0.16 |
| 76 |
-0.07 |
| 78 |
-0.03 |
| 81 |
-0.01 |
| 88 |
0 |
| 99 |
0 |
| 112 |
0 |
Measurement Method: SQUID magnetometer
"The dc magnetization (was) measured in a SQUID magnetometer in an applied field of (796 A/m = 10 Oe)." The data are "zero-field-cooled data". No additional measurement details were noted.
Cautions: Evaluated Data
Digitized data were obtained from Figure 1 of the paper.
Specific Heat for Bi:2212; [Bi-Sr-Ca-Cu-O]
| Temperature (K) |
Specific Heat (J kg-1 K-1) |
| 2.0 |
0.03 |
| 3.8 |
0.08 |
| 5.6 |
0.35 |
| 7.4 |
0.87 |
| 8.7 |
1.57 |
| 9.4 |
1.93 |
| 9.8 |
2.17 |
Measurement Method: Adiabatic calorimetry
The authors cite M.E. Reeves et al., Phys. Rev. B, Vol. 40, 4573 (1989), and summarize the procedure as follows. "The specific heat of a 1.8-g sample was measured by adiabatic calorimetry, as described previously. For the data in magnetic field, the sample was zero-field-cooled." No additional measurement details were noted.
Cautions: Evaluated Data
Digitized data were obtained from Figure 4 of the paper.
Debye Temperature for Bi:2212; [Bi-Sr-Ca-Cu-O]
| Magnetic Field (T) |
Debye Temperature (K) |
| 0 |
255 |
| 1 |
252 |
Measurement Method: Debye Calculation
The authors indicated that the Debye temperature was estimated by fitting the Debye model to the specific heat data in the temperature range 1.8 K to 9.8 K.
Cautions: Evaluated Data
