Ultrasonic measurements in sinter-forged high Tc superconductor YBa2Cu3O(7-delta)
Abstract
Both ultrasonic attenuation and velocity as a function of temperature from 4.2 K to room temperature were measured on sinter-forged samples of YBa2Cu3O(7-delta), which have more than 80 percent alignment of the c-axis of the grains parallel to the forging axis. Strong anisotropy was found both in the attenuation and in the velocity when propagating sound waves in different directions relative to the forging axis. Hysteresis was observed in the velocity changes.
- Publication:
-
IEEE Transactions on Magnetics
- Pub Date:
- March 1989
- DOI:
- 10.1109/20.92793
- Bibcode:
- 1989ITM....25.2414X
- Keywords:
-
- Copper Oxides;
- High Temperature Superconductors;
- Sintering;
- Ultrasonic Tests;
- Yttrium Oxides;
- Acoustic Propagation;
- Barium Oxides;
- Forging;
- Microstructure;
- Perovskites;
- Temperature Dependence;
- Solid-State Physics