Material Specification for PbSr:2213; [Pb-Sr-Y(Ca)-Cu-O]
Process: Crystal Growth
Notes: The authors cite J.S. Xue et al., Physica C, Vol. 166, 29 (1990), and summarize the procedure as follows. "The crystal utilized in this study (approximate dimensions 0.7x0.6x0.2 mm3) was annealed in a nitrogen atmosphere at 600 °C for 40 h..."
Formula: Pb2Sr2Y1-xCaxCu3O8+y
Informal Name: PbSr:2213
Chemical Family: Pb-Sr-Y(Ca)-Cu-O
Chemical Class: Oxide
Structure Type: Single Crystal
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Crystallography for PbSr:2213; [Pb-Sr-Y(Ca)-Cu-O]
| Crystal System: | Orthorhombic |
| Formula Units per Cell: | |
| Space Group: |
|
Cell Parameters
|
Temp
K
|
a
Å
|
b
Å
|
c
Å
|
| 296 |
5.383(1) |
5.423(1) |
15.765(2) |
Measurement Method: X-ray diffraction
"Single-crystal x-ray analysis of this particular crystal using the Weissenberg technique showed it to be of good crystal quality [all of the reflections in the Weissenbrg photograph can be indexed to a primitive orthorhombic unit cell... implying that there is no evidence of any secondary phase].
Cautions: Evaluated Data
Penetration Depth for PbSr:2213; [Pb-Sr-Y(Ca)-Cu-O]
| Direction () |
Temperature (K) |
Penetration Depth (σ) |
| ab-plane |
64.0 |
4800 |
| ab-plane |
67.0 |
5600 |
| ab-plane |
70.0 |
7100 |
| ab-plane |
72.1 |
9400 |
| ab-plane |
74.1 |
17500 |
| ab-plane |
74.5 |
27400 |
| c-axis |
68.4 |
12800 |
| c-axis |
69.0 |
16700 |
| c-axis |
69.5 |
14000 |
| c-axis |
70.0 |
17000 |
| c-axis |
70.5 |
14000 |
| c-axis |
72.0 |
18400 |
| c-axis |
72.5 |
22600 |
| c-axis |
73.0 |
21700 |
| c-axis |
73.5 |
26200 |
| c-axis |
74.0 |
34900 |
Measurement Method: SQUID magnetometer
"The crystal of Pb
2Sr
2(Y,Ca)Cu
3O
8+δ was mounted on a quartz rod and placed into a Quantum Design superconducting quantum interference device (SQUID) magnetometer with its c axis oriented either perpendicular or parallel to the field direction... Generally, the field was turned on after a zero-field cool to 55 K and the resulting magnetization measured upon warming, although some field-cooled sequences were performed in order to determine the regime of reversible magnetization... H
is... determined from the low-field M(H) curve (using the procedure of M. Naito et al., Phys. Rev. B41 (1990) 4823)... since B ...is directly proportional to (ΔM)1/2,... (ΔM)1/2 should be zero until H reaches H
, whereupon it should begin to rise linearly with increasing field."
Cautions: Evaluated Data
Digitized data were obtained from Figure 4a of the paper.
Critical Flux Density Hc1 for PbSr:2213; [Pb-Sr-Y(Ca)-Cu-O]
| Field Direction () |
Temperature (K) |
Crit.Mag.Flux Density Hc1 (mT) |
| H//ab |
5 |
9.2 |
| H//ab |
10 |
9.2 |
| H//ab |
15 |
8.2 |
| H//ab |
20 |
7.6 |
| H//ab |
35 |
4.6 |
| H//ab |
42 |
3.9 |
| H//ab |
50 |
3.3 |
| H//c |
5 |
49.7 |
| H//c |
10 |
47.0 |
| H//c |
15 |
38.8 |
| H//c |
20 |
38.5 |
| H//c |
25 |
31.1 |
| H//c |
35 |
21.6 |
| H//c |
42 |
15.2 |
| H//c |
50 |
10.8 |
| H//c |
60 |
5.1 |
Measurement Method: SQUID magnetometer
"The crystal of Pb
2Sr
2(Y,Ca)Cu
3O
8+δ was mounted on a quartz rod and placed into a Quantum Design superconducting quantum interference device (SQUID) magnetometer with its c axis oriented either perpendicular or parallel to the field direction... Generally, the field was turned on after a zero-field cool to 55 K and the resulting magnetization measured upon warming, although some field-cooled sequences were performed in order to determine the regime of reversible magnetization... H
is... determined from the low-field M(H) curve (using the procedure of M. Naito et al., Phys. Rev. B41 (1990) 4823)... since B ...is directly proportional to (ΔM)1/2,... (ΔM)1/2 should be zero until H reaches H
, whereupon it should begin to rise linearly with increasing field."
Cautions: Evaluated Data
Digitized data were obtained from Figure 6 of the paper.
