Material Specification for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
Process: Solid State Reaction
Notes: The authors cite R.H. Arendt et al., J. Mater. Res., Vol. 5, 33 (1990), and summarize the procedure as follows. "The sample used in this experiment was prepared using a relatively conventional solid-state reaction at 860 °C for 250 h in an air atmosphere, where excesses of 0.75 formulas of CaO and CuO were present to drive the reaction to completion."
Formula: Bi2-xPbxCa2Sr2Cu3Oy
Informal Name: Bi:2223
Chemical Family: Bi(Pb)-Sr-Ca-Cu-O
Chemical Class: Oxide
Structure Type:
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
| Environment () |
Temp
K
|
a
Å
|
b
Å
|
c
Å
|
| Air |
300 |
3.8367 |
-- |
37.223 |
| Air |
400 |
3.8413 |
-- |
37.302 |
| Air |
500 |
3.8480 |
-- |
37.396 |
| Air |
600 |
3.8530 |
-- |
37.497 |
| p(O2) |
300 |
3.8359 |
-- |
37.219 |
| p(O2) |
400 |
3.8411 |
-- |
37.310 |
| p(O2) |
500 |
3.8470 |
-- |
37.406 |
| p(O2) |
600 |
3.8533 |
-- |
37.502 |
| O2 |
300 |
3.8356 |
-- |
37.220 |
| O2 |
400 |
3.8409 |
-- |
37.305 |
| O2 |
500 |
3.4731 |
-- |
37.400 |
| O2 |
600 |
3.8530 |
-- |
37.502 |
| Ar |
300 |
3.8379 |
-- |
37.260 |
| Ar |
400 |
3.8434 |
-- |
37.350 |
| Ar |
500 |
3.8482 |
-- |
37.435 |
| Ar |
600 |
3.8534 |
-- |
37.515 |
Measurement Method: Neutron diffraction
"The neutron diffraction measurements were made on the special environment powder diffractometer... at IPNS. For the experiment, the... powder was die pressed into 9.5 mm... diameter... 12 mm... long pellets, which were placed in a Ag foil lined quartz glass capsule. The pressed pellets were briefly heated to 800 °C to relieve the strains induced in them by the pressing operation. The capsule was mounted in the high-temperature controlled-environment furnace... Data were taken over 20 min intervals, as the sample temperature was ramped, at 1°C min
-1... Rietveld analysis was used to determine the lattice parameters... Since the sample temperature lagged behind the furnace temperature, the Ag lattice parameter was used to calculate the sample temperature... Data were collected in flowing (200 cm
3 min
-1) air, 0.980% oxygen in nitrogen, pure oxygen, and pure argon. Thermal expansion coefficients were determined from the neutron diffraction data by means of a linear least-squares fit of the temperature dependence of the lattice parameters."
Cautions: Evaluated Data
Digitized data were obtained from Figures 2, 4, 6, and 8 of the paper.
Critical Temperature for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
| Critical Temperature (K) |
| 107 |
Measurement Method: Ac susceptibility
Cautions: Unevaluated Data
No measurement details were noted.
Thermal Expansion for Bi:2223; [Bi(Pb)-Sr-Ca-Cu-O]
| Axis () |
Environment () |
Thermal Expansion (10-6 K-1) |
| a |
Ar |
14.20 |
| c |
Ar |
23.65 |
| a |
p(O2) |
15.25 |
| c |
p(O2) |
25.81 |
| a |
Air |
14.91 |
| c |
Air |
25.03 |
| a |
O2 |
15.24 |
| c |
O2 |
26.52 |
Measurement Method: Neutron diffraction
"The neutron diffraction measurements were made on the special environment powder diffractometer... at IPNS. For the experiment, the... powder was die pressed into 9.5 mm... diameter... 12 mm... long pellets, which were placed in a Ag foil lined quartz glass capsule. The pressed pellets were briefly heated to 800 °C to relieve the strains induced in them by the pressing operation. The capsule was mounted in the high-temperature controlled-environment furnace... Data were taken over 20 min intervals, as the sample temperature was ramped, at 1°C min
-1... Rietveld analysis was used to determine the lattice parameters... Since the sample temperature lagged behind the furnace temperature, the Ag lattice parameter was used to calculate the sample temperature... Data were collected in flowing (200 cm
3 min
-1) air, 0.980% oxygen in nitrogen, pure oxygen, and pure argon. Thermal expansion coefficients were determined from the neutron diffraction data by means of a linear least-squares fit of the temperature dependence of the lattice parameters."
Cautions: Evaluated Data
The notation p(O
2) represents 0.980 vol.% O
2 in N
2.
