Material Specification for Y:123; [Y-Ba-Cu-O]
Process: Flux Growth
Notes: The authors cite R.J. Cava et al., Phys. Rev. Lett., Vol. 58, 1676 (1987), and summarize the procedure as follows. "Single crystals of YBa2Cu3O7 and HoBa2Cu3O7 were grown with a flux technique which formed plates with faces several millimeters across and 0.1 mm in thickness. The preparation of the sintered sample of YBa2Cu3O7 from the oxide powders has been described (in the cited reference). Dimensions of the three samples are 0.6 x 2.2 x 0.03 mm3, 0.8 x 2.0 x 0.07 mm3, respectively."
Formula: YBa2Cu3O7
Informal Name: Y:123
Chemical Family: Y-Ba-Cu-O
Chemical Class: Oxide
Structure Type:
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Thermal Conductivity for Y:123; [Y-Ba-Cu-O]
| Specimen () |
Temperature (K) |
Thermal Conductivity (W m-1 K-1) |
| crystal |
0.056 |
0.0011 |
| crystal |
0.17 |
0.0072 |
| crystal |
0.59 |
0.058 |
| crystal |
2.3 |
0.63 |
| crystal |
4.1 |
1.5 |
| crystal |
5.9 |
2.5 |
| sintered |
0.031 |
0.00005 |
| sintered |
0.11 |
0.00022 |
| sintered |
0.013 |
0.00038 |
| sintered |
0.18 |
0.00038 |
| sintered |
1.4 |
0.036 |
| sintered |
2.8 |
0.26 |
| sintered |
5.5 |
0.85 |
Measurement Method: Thermal conductivity method
"The single crystals have the c-axis perpendicular to the large faces, so that the thermal conductivity is measured in the a-b plane. Thermal contacts for the four-probe method are made with 0.0025 cm diameter Au wire and a very small amount of silver epoxy for the crystals and silver paint for the sintered sample. The measurements use a two-heater one-thermometer technique in a dilution refrigerator."
Cautions: Evaluated Data
Digitized data were obtained from Figure 1 of the paper.
Material Specification for Ho:123; [Ho-Ba-Cu-O]
Process: Solid State Reaction
Notes: The authors cite R.J. Cava et al., Phys. Rev. Lett., Vol. 58, 1676 (1987), and summarize the procedure as follows. "Single crystals of YBa2Cu3O7 and HoBa2Cu3O7 were grown with a flux technique which formed plates with faces several millimeters across and 0.1 mm in thickness. The preparation of the sintered sample of YBa2Cu3O7 from the oxide powders has been described (in the cited reference). Dimensions of the three samples are 0.6 x 2.2 x 0.03 mm3, 0.8 x 2.0 x 0.07 mm3, respectively."
Formula: HoBa2Cu3O7
Informal Name: Ho:123
Chemical Family: Ho-Ba-Cu-O
Chemical Class: Oxide
Structure Type: Single Crystal
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Thermal Conductivity for Ho:123; [Ho-Ba-Cu-O]
| Specimen () |
Temperature (K) |
Thermal Conductivity (W m-1 K-1) |
| -- |
0.079 |
0.0007 |
| -- |
0.089 |
0.0012 |
| -- |
0.11 |
0.0017 |
| -- |
0.48 |
0.028 |
| -- |
1.6 |
0.30 |
| -- |
2.0 |
0.51 |
| -- |
2.8 |
0.92 |
Measurement Method: Thermal conductivity method
"The single crystals have the c-axis perpendicular to the large faces, so that the thermal conductivity is measured in the a-b plane. Thermal contacts for the four-probe method are made with 0.0025 cm diameter Au wire and a very small amount of silver epoxy for the crystals and silver paint for the sintered sample. The measurements use a two-heater one-thermometer technique in a dilution refrigerator."
Cautions: Evaluated Data
Digitized data were obtained from Figure 1 of the paper.
