Material Specification for Y:123; [Y-Ba-Cu-O]
Process: Flux Growth
Notes: The authors cite J.L. Tholence et al., Studies of High Temperature Superconductors, ed. A. Narlikar, Nova Sci., Vol. 6, 37 (1990), and summarize the procedure as follows. "The single crystals were grown by a flux method instead of mineralization process."
Formula: YBa2Cu3O7
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]
| Critical Temperature (K) |
| 88.5 |
Ac susceptibility
The authors cite M. Guillot et al., Solid State Commun. 78 (1991) 237 and summarize their procedure as follows. "... T
c... was determined by ac susceptibility measurements..."
Cautions: Unevaluated Data
Elasticity Tensor for Y:123; [Y-Ba-Cu-O]
| C11 = | 230 |
| C12 = | |
| C13 = | |
| C22 = | |
| C23 = | |
| C33 = | 61 |
| C44 = | 31 |
| C55 = | |
| C66 = | 78 |
Measurement Method: Pulse echo technique
"Ultrasonic experiments were performed on sample 1 (2x2x1 mm
3) and sample 2 (3x3x1.5 mm
3) with the lowest dimension along the crystallographic c-axis. Standard pulse echo technique was used with two LiNbO
3 transducers. All the sound velocity measurements were performed at 15 MHz. Attenuation was measured at 75 MHz. Small changes in velocity were continuously measured. A relative shift of about 2x10
-5 could be determined. Longitudinal and shear modes were generated along the a- and c-axis giving access to the elastic constants C
11, C
33, C
44, C
66 because of pseudo-tetragonal symmetry (a = b)."
Cautions: Evaluated Data
