Ultrasonic studies of textured superconducting Bi2Sr2CaCu2O8+y in magnetic fields
UNSPECIFIED (1996) Ultrasonic studies of textured superconducting Bi2Sr2CaCu2O8+y in magnetic fields. In: 11th International Conference on Internal Friction and Ultrasonic Attenuation in Solids (ICIFUAS 11), ECOLE NATIONALE DE MECANIQUE ET AEROTECHNIQUE, POITIERS, FRANCE, JUL 07-11, 1996. Published in: JOURNAL DE PHYSIQUE IV, 6 (C8). pp. 481-484.Full text not available from this repository.
Measurements have been made of ultrasonic shear wave attenuation and sound velocity in highly textured polycrystalline samples of Bi2Sr2CaCu2O8+y in magnetic fields up to 9 telsa and at temperatures down to 4.2 K. Magnetic field dependent attenuation peaks and velocity enhancements were found that are in good agreement with theoretical predictions based on the assumptions of the thermally assisted nux flow model of the mixed state. A pinning activation energy of similar to 160 K was deduced from the ultrasonic data. Pinning energy showed little evidence of dependence upon magnetic field magnitude or orientation. The flux-line lattice was found to be pinned fully at lowest temperatures.
|Item Type:||Conference Item (UNSPECIFIED)|
|Subjects:||Q Science > QC Physics|
|Journal or Publication Title:||JOURNAL DE PHYSIQUE IV|
|Number of Pages:||4|
|Page Range:||pp. 481-484|
|Title of Event:||11th International Conference on Internal Friction and Ultrasonic Attenuation in Solids (ICIFUAS 11)|
|Location of Event:||ECOLE NATIONALE DE MECANIQUE ET AEROTECHNIQUE, POITIERS, FRANCE|
|Date(s) of Event:||JUL 07-11, 1996|
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