Material Specification for Y:123; [Y-Ba-Cu-O]
Process: Laser Ablation
Notes: The authors cite S.G. Lee et al., Appl. Phys. Lett., Vol. 55, 1261 (1989), and summarize the procedure as follows. "The sample used in this investigation was a c-axis oriented epitaxial YBaCO film of 400 nm thickness deposited on a (100) SrTiO3 substrate by using a standard laser ablation technique. The substrate temperature was about 700 °C and the oxygen pressure during the laser ablation was (23 Pa = 170 mtorr). The YBaCuO film was annealed at 450 °C in flowing O2 for 80 h."
Formula: YBa2Cu3O7-x
Informal Name: Y:123
Chemical Family: Y-Ba-Cu-O
Chemical Class: Oxide
Structure Type: Polycrystalline
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Critical Flux Density Hc2 for Y:123; [Y-Ba-Cu-O]
| Temperature (K) |
Crit.Mag.Flux Density Hc2 (T) |
| 88.8 |
9.1 |
| 90.0 |
7.0 |
| 90.5 |
5.0 |
| 91.7 |
3.5 |
Measurement Method: Four-probe method
"The film originally covering the whole substrate was patterned by standard photolithography... The contact pads... also consisted of the YBaCuO film, but covered here with a Ag film of 50 nm thickness. All leads were 0.15 mm diam. copper wire attached to the contact pads in a four-point configuration... using indium press contacts... The Seebeck effect was measured as a function of temperature and magnetic field for the thermocouple consisting of the YBaCuO (strip A) and the Cu wires attached to both ends of strip A. The temperature difference ΔT between the hot and cold sides of this sample was typically 2-3 K." These data and the time-dependent Ginzburg-Landau theory were used by the authors to estimate the critical flux density H
.
Cautions: Evaluated Data
Resistivity (normal state) for Y:123; [Y-Ba-Cu-O]
| Magnetic Field (T) |
Temperature (K) |
Resistivity (normal state) (mΩ·cm) |
| 0 |
88.1 |
0.003 |
| 0 |
89.2 |
0.008 |
| 0 |
90.0 |
0.025 |
| 0 |
90.7 |
0.096 |
| 0 |
91.5 |
0.163 |
| 0 |
92.1 |
0.188 |
| 0 |
93.0 |
0.201 |
| 0 |
96.9 |
0.221 |
| 0 |
102.2 |
0.233 |
| 0 |
103.6 |
0.238 |
| 5 |
78.4 |
0.001 |
| 5 |
79.4 |
0.006 |
| 5 |
81.1 |
0.019 |
| 5 |
82.6 |
0.053 |
| 5 |
85.8 |
0.136 |
| 5 |
88.4 |
0.174 |
| 5 |
91.3 |
0.197 |
| 5 |
95.1 |
0.212 |
| 5 |
100.3 |
0.229 |
| 5 |
108.5 |
0.248 |
Measurement Method: Four-probe method
"The film originally covering the whole substrate was patterned by standard photolithography... The contact pads... also consisted of the YBaCuO film, but covered here with a Ag film of 50 nm thickness. All leads were 0.15 mm diam. copper wire attached to the contact pads in a four-point configuration... using indium press contacts... The Seebeck effect was measured as a function of temperature and magnetic field for the thermocouple consisting of the YBaCuO (strip A) and the Cu wires attached to both ends of strip A. The temperature difference ΔT between the hot and cold sides of this sample was typically 2-3 K." These data and the time-dependent Ginzburg-Landau theory were used by the authors to estimate the critical flux density H
.
Cautions: Evaluated Data
Digitized data were obtained from Figure 3a of the paper.
Thermoelectric Power for Y:123; [Y-Ba-Cu-O]
| Magnetic Field (T) |
Temperature (K) |
Thermoelectric Power (µV/K) |
| 0 |
77 |
2.0 |
| 0 |
81 |
2.0 |
| 0 |
83 |
2.0 |
| 0 |
87 |
2.0 |
| 0 |
88 |
1.3 |
| 0 |
93 |
-6.8 |
| 0 |
98 |
-7.7 |
| 0 |
101 |
-7.9 |
| 0 |
105 |
-8.2 |
| 0 |
108 |
-7.9 |
| 0 |
111 |
-8.0 |
| 5 |
73 |
2.2 |
| 5 |
75 |
2.2 |
| 5 |
78 |
2.1 |
| 5 |
81 |
1.3 |
| 5 |
83 |
-0.6 |
| 5 |
86 |
-4.0 |
| 5 |
88 |
-5.4 |
| 5 |
92 |
-6.8 |
| 5 |
94 |
-7.1 |
| 5 |
96 |
-7.8 |
| 5 |
100 |
-7.8 |
Measurement Method: Four-probe method
"The film originally covering the whole substrate was patterned by standard photolithography... The contact pads... also consisted of the YBaCuO film, but covered here with a Ag film of 50 nm thickness. All leads were 0.15 mm diam. copper wire attached to the contact pads in a four-point configuration... using indium press contacts... The Seebeck effect was measured as a function of temperature and magnetic field for the thermocouple consisting of the YBaCuO (strip A) and the Cu wires attached to both ends of strip A. The temperature difference ΔT between the hot and cold sides of this sample was typically 2-3 K." These data and the time-dependent Ginzburg-Landau theory were used by the authors to estimate the critical flux density H
.
Cautions: Evaluated Data
Digitized data were obtained from Figure 3b of the paper.
