Material Specification for Nd:123; [Nd(Pr)-Ba-Cu-O]
Process: Solid State Reaction
Notes: "Samples... were prepared with stoichiometric amounts of high-purity Nd2O3, Pr6O11, BaCO3 and CuO using a solid-state reaction technique. All the components were heat treated prior to use. The powders were mixed thoroughly and heated to 870 °C overnight. Subsequently, the reacted material was ground and heated to 945 °C for 24 h, with fast thermal cycling to 895 °C every 4 h. This process was repeated 4-6 times until the impurity phase (green phase) was below the X-ray diffraction (XRD) detection limit. The powder was slow cooled (1 °C/min) during the final cycle. The resultant material was then compacted and sintered at 925 °C in air for 24 h, followed by slow cooling to room temperature. The pellet was then oxygenated at 450 °C for 24 h and slowly brought to room temperature."
Formula: Nd1-xPrxBa2Cu3O7-y
Informal Name: Nd:123
Chemical Family: Nd(Pr)-Ba-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Critical Temperature for Nd:123; [Nd(Pr)-Ba-Cu-O]
| x of Prx (formula units) |
Critical Temperature (K) |
| 0.00 |
84 |
| 0.05 |
65 |
| 0.10 |
59 |
| 0.15 |
36 |
| 0.20 |
27 |
| 0.25 |
10 |
Measurement Method: Four-probe method
"Resistivity experiments were performed in a four-probe configuration on an automated setup..." No additional measurement details were noted.
T
c was taken as the zero resistance temperature.
Cautions: Evaluated Data
Digitized data were obtained from Figure 2 of the paper.
Resistivity (normal state) for Nd:123; [Nd(Pr)-Ba-Cu-O]
| x of Prx (formula units) |
Temperature (K) |
Resistivity (normal state) (mΩ·cm) |
| 0.0 |
84 |
0.0 |
| 0.0 |
90 |
0.9 |
| 0.0 |
100 |
1.0 |
| 0.0 |
150 |
1.2 |
| 0.0 |
200 |
1.3 |
| 0.0 |
250 |
1.4 |
| 0.0 |
300 |
1.5 |
| 0.05 |
70 |
0.1 |
| 0.05 |
78 |
1.0 |
| 0.05 |
100 |
1.0 |
| 0.05 |
150 |
1.2 |
| 0.05 |
200 |
1.3 |
| 0.05 |
250 |
1.4 |
| 0.05 |
300 |
1.5 |
| 0.10 |
59 |
0.0 |
| 0.10 |
67 |
1.0 |
| 0.10 |
100 |
1.2 |
| 0.10 |
150 |
1.5 |
| 0.10 |
200 |
1.6 |
| 0.10 |
250 |
1.7 |
| 0.10 |
300 |
1.8 |
| 0.15 |
36 |
0.0 |
| 0.15 |
49 |
1.4 |
| 0.15 |
100 |
1.6 |
| 0.15 |
150 |
1.7 |
| 0.15 |
200 |
1.7 |
| 0.15 |
250 |
1.7 |
| 0.15 |
300 |
1.9 |
| 0.20 |
24 |
0.0 |
| 0.20 |
37 |
2.4 |
| 0.20 |
100 |
2.8 |
| 0.20 |
150 |
2.8 |
| 0.20 |
200 |
2.8 |
| 0.20 |
250 |
2.9 |
| 0.20 |
300 |
3.0 |
| 0.25 |
10 |
0.0 |
| 0.25 |
22 |
6.2 |
| 0.25 |
50 |
5.0 |
| 0.25 |
100 |
3.9 |
| 0.25 |
150 |
3.7 |
| 0.25 |
200 |
3.6 |
| 0.25 |
250 |
3.5 |
| 0.25 |
300 |
3.5 |
Measurement Method: Four-probe method
"Resistivity experiments were performed in a four-probe configuration on an automated setup..." No additional measurement details were noted.
T
c was taken as the zero resistance temperature.
Cautions: Evaluated Data
Digitized data were obtained from Figure 1 of the paper.
Specific Heat for Nd:123; [Nd(Pr)-Ba-Cu-O]
| x of Prx (formula units) |
Temperature (K) |
Specific Heat (J kg-1 K-1) |
| 0.2 |
1.9 |
4.0 |
| 0.2 |
2.0 |
4.1 |
| 0.2 |
2.7 |
3.5 |
| 0.2 |
4.0 |
2.4 |
| 0.2 |
5.0 |
1.9 |
| 0.2 |
7.0 |
1.6 |
| 0.2 |
8.5 |
1.6 |
| 0.2 |
9.9 |
1.9 |
| 0.0 |
2.4 |
0.9 |
| 0.0 |
3.0 |
0.5 |
| 0.0 |
4.0 |
0.4 |
| 0.0 |
5.0 |
0.4 |
| 0.0 |
6.0 |
0.4 |
| 0.0 |
7.0 |
0.4 |
| 0.0 |
9.0 |
0.7 |
| 0.0 |
9.8 |
1.0 |
Measurement Method: Heat-pulse method
"Standard heat capacity measurements were carried out in the semiadiabatic mode using the heat-pulse technique in the temperature range 2-25 K." No additional measurement details were noted.
Cautions: Evaluated Data
Digitized data were obtained from Figure 6 of the paper.
