Material Specification for Y:123; [Y-Ba-Cu-O]
Process: Flux Growth
Notes: The authors cite J.P. Rice et al., J. Low Temp. Phys., Vol. 72, 345 (1988), and summarize the procedure as follows. "... single crystal samples... were grown by a self-flux technique... We used yttria-stabilized zirconia crucibles instead of alumina crucibles to avoid aluminum impurities in our samples. These impurities greatly affect the c-direction resistivity. Oxygenation was carried out during post-growth annealing in flowing O2, first for 1 h at 600 °C and then for 96 h at 400 °C... As grown, sample A had a large twin-free domain... We cleaved this sample along the a and b crystal axes to remove the twinned regions and leave a nearly twin-free single crystal... sample B had many twins... We polished this crystal to a rectangular shape perpendicular to the a and b crystal axes, and removed all of its twin boundaries by applying a uniaxial stress at 450 °C in flowing oxygen on the hot stage of an optical microscope having crossed polarizers... One corner of sample A had a very small second twin domain in the vicinity of one contact. Sample B was untwinned. We believe, therefore, that the properties reported here for each sample were determined by a single domain."
Formula: YBa2Cu3O7-x
Informal Name: Y:123
Chemical Family: Y-Ba-Cu-O
Chemical Class: Oxide
Structure Type: Single Crystal
Manufacturer: In House
Commercial Name: In House
Production Date:
Lot Number:
Production Form:
Critical Temperature for Y:123; [Y-Ba-Cu-O]
| ΔTc (K) |
Critical Temperature (K) |
| 2 |
92 |
Measurement Method: Dc susceptibility
"The dc magnetization of the crystals (was) measured in a superconducting quantum interference device magnetometer after the final heat treatment... Zero-field-cooled (ZFC) and field-cooled (FC) data are shown." The applied field was 828 A/m (10.4 Oe).
Cautions: Evaluated Data
Resistivity (normal state) for Y:123; [Y-Ba-Cu-O]
| Direction () |
Temperature (K) |
Resistivity (normal state) (mΩ·cm) |
| c-axis |
96 |
0.0 |
| c-axis |
97 |
0.5 |
| c-axis |
98 |
1.0 |
| c-axis |
98 |
2.3 |
| c-axis |
136 |
2.8 |
| c-axis |
155 |
3.1 |
| c-axis |
193 |
3.5 |
| c-axis |
224 |
3.9 |
| c-axis |
250 |
4.3 |
| c-axis |
275 |
4.8 |
| a-axis |
94 |
0.001 |
| a-axis |
96 |
0.001 |
| a-axis |
98 |
0.040 |
| a-axis |
127 |
0.059 |
| a-axis |
161 |
0.077 |
| a-axis |
200 |
0.099 |
| a-axis |
239 |
0.122 |
| a-axis |
274 |
0.144 |
| b-axis |
94 |
0.001 |
| b-axis |
97 |
0.021 |
| b-axis |
122 |
0.027 |
| b-axis |
156 |
0.035 |
| b-axis |
193 |
0.044 |
| b-axis |
235 |
0.056 |
| b-axis |
275 |
0.068 |
Measurement Method: Electrical resistance method
"The Montgomery analysis assumes that the sample has point contacts at the vertices of the crystal, so we made electrical contact through eight small gold pads placed near to the corners of the ab faces as possible. We evaporated the gold pads onto the sample through a 30-µm-diam hole in a mechanical mask. The distance from the edge of each contact to each adjacent edge of the sample was less than 10 µm. Annealing the sample at 400 °C for 48 h in flowing O
2 made the gold pads stick to the surface and reduced the contact resistance from (about) 1 kΩ to (about) 1 Ω... We thermally anchored each sample to a corner grid with General Electric GE7031 varnish, allowing access to all eight corners, and we made final electrical contact to the crystals, using a micromanipulator and silver paste to attach 25-µm-diam gold wires to the contact pads... We monitored the sample temperature with a calibrated platinum resistor, and took data only after achieving thermal equilibrium... We measured the Montgomery resistances... using a computer-controlled, calibrated ac bridge operated at 50 Hz and a current of 600 µA."
Cautions: Evaluated Data
Digitized data were obtained from Figure 6 of the paper.
Magnetic Susceptibility for Y:123; [Y-Ba-Cu-O]
| Sample Number () |
Cooling Condition () |
Temperature (K) |
Magnetic Susceptibility (arbitrary) |
| A |
FC |
5 |
-0.64 |
| A |
FC |
25 |
-0.66 |
| A |
FC |
50 |
-0.64 |
| A |
FC |
70 |
-0.65 |
| A |
FC |
88 |
-0.58 |
| A |
FC |
90 |
-0.64 |
| A |
ZFC |
5 |
-1.05 |
| A |
ZFC |
25 |
-1.05 |
| A |
ZFC |
70 |
-1.04 |
| A |
ZFC |
85 |
-1.01 |
| A |
ZFC |
88 |
-0.96 |
| A |
ZFC |
90 |
-0.10 |
| A |
ZFC |
92 |
0.00 |
| B |
FC |
5 |
-0.62 |
| B |
FC |
25 |
-0.62 |
| B |
FC |
50 |
-0.62 |
| B |
FC |
70 |
-0.61 |
| B |
FC |
88 |
-0.60 |
| B |
FC |
90 |
-0.51 |
| B |
ZFC |
5 |
-1.01 |
| B |
ZFC |
25 |
-1.01 |
| B |
ZFC |
50 |
-1.01 |
| B |
ZFC |
75 |
-1.00 |
| B |
ZFC |
85 |
-0.98 |
| B |
ZFC |
88 |
-0.94 |
| B |
ZFC |
90 |
-0.19 |
| B |
ZFC |
92 |
0.00 |
Measurement Method: Dc susceptibility
"The dc magnetization of the crystals (was) measured in a superconducting quantum interference device magnetometer after the final heat treatment... Zero-field-cooled (ZFC) and field-cooled (FC) data are shown." The applied field was 828 A/m (10.4 Oe).
Cautions: Evaluated Data
Digitized data were obtained from Figure 1 of the paper.
