Material Specification for Hg:121; [Hg-Ba-Cu-O]
Process: Solid State Reaction
Notes: The authors cite J.L. Wagner et al., Physica C, Vol. 210, 447 (1993), and summarize the procedure as follows. "Samples were synthesized from appropriate mixtures of HgO, PbO, and Ba2CuO3... The samples used for the magnetization measurements were cut from ceramic pellets and had the shape of rectangular bars (with dimensions of about 2x2x5 mm3)."
Formula: HgBa2CuO4+x
Informal Name: Hg:121
Chemical Family: Hg-Ba-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Crystallography for Hg:121; [Hg-Ba-Cu-O]
| Crystal System: | Tetragonal |
| Formula Units per Cell: | |
| Space Group: |
P4/mmm
|
Cell Parameters
|
Temp
K
|
a
Å
|
b
Å
|
c
Å
|
| 296 |
3.878(1) |
-- |
9.527(1) |
Measurement Method: X-ray diffraction
Cautions: Unevaluated Data
No measurement details were noted.
Critical Temperature for Hg:121; [Hg-Ba-Cu-O]
| Critical Temperature (K) |
| 94 |
Measurement Method: SQUID magnetometer
"The magnetization was measured in a commercial superconducting quantum interference device magnetometer in fields up to 7 T applied parallel to the long side of the bar... in a field of (0.1 mT = 1 G)... With increasing temperature, the hysteresis rapidly collapses, and the irreversibility line can be mapped by tracing the magnetic fields at which the hysteresis loops close."
Cautions: Evaluated Data
Magnetic Susceptibility for Hg:121; [Hg-Ba-Cu-O]
| Temperature (K) |
Magnetic Susceptibility (arbitrary) |
| 70 |
-0.13 |
| 78 |
-0.13 |
| 84 |
-0.11 |
| 90 |
-0.09 |
| 93 |
-0.07 |
| 94 |
-0.01 |
| 94 |
0 |
| 100 |
0 |
Measurement Method: SQUID magnetometer
"The magnetization was measured in a commercial superconducting quantum interference device magnetometer in fields up to 7 T applied parallel to the long side of the bar... in a field of (0.1 mT = 1 G)... With increasing temperature, the hysteresis rapidly collapses, and the irreversibility line can be mapped by tracing the magnetic fields at which the hysteresis loops close."
Cautions: Evaluated Data
Digitized data were obtained from Figure 2 of the paper.
Irreversibility Field for Hg:121; [Hg-Ba-Cu-O]
| Temperature (K) |
Irreversibility Field (T) |
| 30 |
6.7 |
| 36 |
5.6 |
| 40 |
4.2 |
| 56 |
2.0 |
| 60 |
1.5 |
| 65 |
0.7 |
| 70 |
0.5 |
| 76 |
0.1 |
Measurement Method: SQUID magnetometer
"The magnetization was measured in a commercial superconducting quantum interference device magnetometer in fields up to 7 T applied parallel to the long side of the bar... in a field of (0.1 mT = 1 G)... With increasing temperature, the hysteresis rapidly collapses, and the irreversibility line can be mapped by tracing the magnetic fields at which the hysteresis loops close."
Cautions: Evaluated Data
Digitized data were obtained from Figure 4 of the paper.
Material Specification for Hg:121; [Hg(Pb)-Ba-Cu-O]
Process: Solid State Reaction
Notes: The authors cite J.L. Wagner et al., Physica C, Vol. 210, 447 (1993), and summarize the procedure as follows. "Samples were synthesized from appropriate mixtures of HgO, PbO, and Ba2CuO3... The samples used for the magnetization measurements were cut from ceramic pellets and had the shape of rectangular bars (with dimensions of about 2x2x5 mm3)."
Formula: Hg0.8Pb0.2Ba2CuO4+x
Informal Name: Hg:121
Chemical Family: Hg(Pb)-Ba-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Crystallography for Hg:121; [Hg(Pb)-Ba-Cu-O]
| Crystal System: | Tetragonal |
| Formula Units per Cell: | |
| Space Group: |
P4/mmm
|
Cell Parameters
|
Temp
K
|
a
Å
|
b
Å
|
c
Å
|
| 296 |
3.881(1) |
-- |
9.531(1) |
Measurement Method: X-ray diffraction
Cautions: Unevaluated Data
No measurement details were noted.
Critical Temperature for Hg:121; [Hg(Pb)-Ba-Cu-O]
| Critical Temperature (K) |
| 96 |
Measurement Method: SQUID magnetometer
"The magnetization was measured in a commercial superconducting quantum interference device magnetometer in fields up to 7 T applied parallel to the long side of the bar... in a field of (0.1 mT = 1 G)... With increasing temperature, the hysteresis rapidly collapses, and the irreversibility line can be mapped by tracing the magnetic fields at which the hysteresis loops close."
Cautions: Evaluated Data
Magnetic Susceptibility for Hg:121; [Hg(Pb)-Ba-Cu-O]
| Temperature (K) |
Magnetic Susceptibility (arbitrary) |
| 70 |
-0.13 |
| 75 |
-0.12 |
| 82 |
-0.11 |
| 88 |
-0.10 |
| 92 |
-0.08 |
| 95 |
-0.03 |
| 96 |
0 |
| 96 |
0 |
| 100 |
0 |
Measurement Method: SQUID magnetometer
"The magnetization was measured in a commercial superconducting quantum interference device magnetometer in fields up to 7 T applied parallel to the long side of the bar... in a field of (0.1 mT = 1 G)... With increasing temperature, the hysteresis rapidly collapses, and the irreversibility line can be mapped by tracing the magnetic fields at which the hysteresis loops close."
Cautions: Evaluated Data
Digitized data were obtained from Figure 2 of the paper.
Irreversibility Field for Hg:121; [Hg(Pb)-Ba-Cu-O]
| Temperature (K) |
Irreversibility Field (T) |
| 20 |
7.0 |
| 31 |
5.0 |
| 40 |
3.5 |
| 46 |
3.0 |
| 51 |
2.5 |
| 56 |
2.2 |
| 60 |
2.0 |
| 66 |
1.5 |
| 70 |
1.0 |
| 75 |
0.5 |
Measurement Method: SQUID magnetometer
"The magnetization was measured in a commercial superconducting quantum interference device magnetometer in fields up to 7 T applied parallel to the long side of the bar... in a field of (0.1 mT = 1 G)... With increasing temperature, the hysteresis rapidly collapses, and the irreversibility line can be mapped by tracing the magnetic fields at which the hysteresis loops close."
Cautions: Evaluated Data
Digitized data were obtained from Figure 4 of the paper.
