Material Specification for Y:123; [Y-Ba-Cu-O]
Process: Solid State Reaction
Notes: The authors cite J. Blendell et al., Advan. Ceram. Mater., Vol. 2, 512 (1987), and summarize the procedure as follows. "The starting specimen... was prepared by usual powder-ceramic methods... Its oxygen content was determined on a companion specimen by iodine titration. We varied its oxygen content by the following steps: (1) anneal in vacuum at 500 °C for 2 h; (2) heat in flowing oxygen at 600 °C for 1 h, quench to 400 °C and hold for 10 h; (3) heat in flowing oxygen at 935 °C for 10 h, quench to 450 °C, hold for 20 h. We estimated the oxygen content from unit-cell dimensions obtained from X-ray diffraction measurements."
Formula: YBa2Cu3Ox
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:
Density (mass) for Y:123; [Y-Ba-Cu-O]
| Temperature (K) |
x of Ox (formula units) |
Void-free Density (g cm-3) |
Density (g cm-3) |
| 5 |
6.2 |
6.171 |
4.433 |
| 5 |
6.7 |
6.304 |
4.523 |
| 5 |
6.8 |
6.339 |
4.528 |
| 5 |
6.9 |
6.363 |
4.553 |
Measurement Method: Archimedes' method
"Macroscopic mass density was measured by the Archimedes method..."
Cautions: Evaluated Data
Crystallography for Y:123; [Y-Ba-Cu-O]
| Crystal System: | Orthorhombic |
| Formula Units per Cell: | |
| Space Group: |
|
Cell Parameters
| x of Ox (formula units) |
Temp
K
|
a
Å
|
b
Å
|
c
Å
|
| 6.2 |
296 |
3.8606 |
3.8664 |
11.7827 |
| 6.7 |
296 |
3.8286 |
3.8868 |
11.6984 |
| 6.8 |
296 |
3.8250 |
3.8957 |
11.6587 |
| 6.9 |
296 |
3.8228 |
3.8926 |
11.6598 |
Measurement Method: X-ray diffraction
Cautions: Unevaluated Data
No measurement details were noted.
Debye Temperature for Y:123; [Y-Ba-Cu-O]
| Temperature (K) |
x of Ox (formula units) |
Debye Temperature (K) |
| 5 |
6.2 |
337 |
| 5 |
6.7 |
356 |
| 5 |
6.8 |
362 |
| 5 |
6.9 |
361 |
Measurement Method: Ultrasonic pulse-echo
"... sound velocities (were measured) by a pulse-echo-overlap method... We obtained void-free-state values by using relationships reported (by H. Ledbetter et al., J. Mater. Res., Vol. 2, 786 (1987) )... We calculated the Debye temperature..." No additional measurement details were noted.
Cautions: Evaluated Data
Elastic Modulus for Y:123; [Y-Ba-Cu-O]
| Temperature (K) |
x of Ox (formula units) |
Void-free Modulus (GPa) |
Elastic Modulus (GPa) |
| 5 |
6.2 |
91.3 |
51.2 |
| 5 |
6.7 |
101.1 |
56.6 |
| 5 |
6.8 |
103.9 |
57.8 |
| 5 |
6.9 |
102.9 |
57.4 |
Measurement Method: Ultrasonic pulse-echo
"... sound velocities (were measured) by a pulse-echo-overlap method... We obtained void-free-state values by using relationships reported (by H. Ledbetter et al., J. Mater. Res., Vol. 2, 786 (1987) )... We calculated the Debye temperature..." No additional measurement details were noted.
Cautions: Evaluated Data
Shear Modulus for Y:123; [Y-Ba-Cu-O]
| Temperature (K) |
x of Ox (formula units) |
Void-free Modulus (GPa) |
Shear Modulus (GPa) |
| 5 |
6.2 |
38.45 |
21.51 |
| 5 |
6.7 |
42.16 |
23.59 |
| 5 |
6.8 |
43.51 |
24.16 |
| 5 |
6.9 |
43.61 |
24.23 |
Measurement Method: Ultrasonic pulse-echo
"... sound velocities (were measured) by a pulse-echo-overlap method... We obtained void-free-state values by using relationships reported (by H. Ledbetter et al., J. Mater. Res., Vol. 2, 786 (1987) )... We calculated the Debye temperature..." No additional measurement details were noted.
Cautions: Evaluated Data
Poisson's Ratio for Y:123; [Y-Ba-Cu-O]
| Temperature (K) |
x of Ox (formula units) |
Void-free Ratio () |
Poisson's Ratio (no unit) |
| 5 |
6.2 |
0.187 |
0.190 |
| 5 |
6.7 |
0.199 |
0.199 |
| 5 |
6.8 |
0.194 |
0.196 |
| 5 |
6.9 |
0.180 |
0.185 |
Measurement Method: Ultrasonic pulse-echo
"... sound velocities (were measured) by a pulse-echo-overlap method... We obtained void-free-state values by using relationships reported (by H. Ledbetter et al., J. Mater. Res., Vol. 2, 786 (1987) )... We calculated the Debye temperature..." No additional measurement details were noted.
Cautions: Evaluated Data
Bulk Modulus for Y:123; [Y-Ba-Cu-O]
| Temperature (K) |
x of Ox (formula units) |
Void-free Bulk Modulus (GPa) |
Bulk Modulus (GPa) |
| 5 |
6.2 |
48.6 |
27.5 |
| 5 |
6.7 |
55.9 |
31.3 |
| 5 |
6.8 |
56.6 |
31.6 |
| 5 |
6.9 |
53.6 |
30.4 |
Measurement Method: Ultrasonic pulse-echo
"... sound velocities (were measured) by a pulse-echo-overlap method... We obtained void-free-state values by using relationships reported (by H. Ledbetter et al., J. Mater. Res., Vol. 2, 786 (1987) )... We calculated the Debye temperature..." No additional measurement details were noted.
Cautions: Evaluated Data
Sound Velocity for Y:123; [Y-Ba-Cu-O]
| Temperature (K) |
x of Ox (formula units) |
Mode () |
Void-free Velocity (km/s) |
Sound Velocity (km/s) |
| 5 |
6.2 |
Longitudinal |
4.022 |
3.561 |
| 5 |
6.7 |
Longitudinal |
4.218 |
3.726 |
| 5 |
6.8 |
Longitudinal |
4.253 |
3.755 |
| 5 |
6.9 |
Longitudinal |
4.190 |
3.710 |
| 5 |
6.2 |
Shear |
2.496 |
2.203 |
| 5 |
6.7 |
Shear |
2.586 |
2.284 |
| 5 |
6.8 |
Shear |
2.620 |
2.310 |
| 5 |
6.9 |
Shear |
2.618 |
2.307 |
Measurement Method: Ultrasonic pulse-echo
"... sound velocities (were measured) by a pulse-echo-overlap method... We obtained void-free-state values by using relationships reported (by H. Ledbetter et al., J. Mater. Res., Vol. 2, 786 (1987) )... We calculated the Debye temperature..." No additional measurement details were noted.
Cautions: Evaluated Data
