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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Li, Z.-X. Levy, M. Sarma, B.K. Salem-Sugui Jr., S. Shi, D. Crabtree, G.W. |
| Copyright Year | 2002 |
| Abstract | Both attenuation and velocity measurements have been performed in low magnetic fields on a melt-textured sample of YBa/sub 2/Cu/sub 3/O/sub 7- delta /. Transverse waves propagated along the c-axis at 76 MHz while the temperature was kept constant. Four orientations of the magnetic field H were used. In the a-b plane the field was perpendicular, at 45 degrees , or parallel to the polarization direction. The fourth orientation was parallel to the c-axis. The results suggest that the penetration field observed by the ultrasonic measurements is associated with flux line penetration into the matrix surrounding the oriented crystallites. The velocity jump changes as the inverse of the separation between the vortex lines, and the maximum in the attenuation jump appears to be the result of the fact that the attenuation is proportional to the density of the flux lines but the interaction is described by a thermally activated process.< |
| Sponsorship | Council on Superconductivity Appl. Superconductivity Conference Inc MIT |
| Starting Page | 1406 |
| Ending Page | 1408 |
| Page Count | 3 |
| File Size | 305273 |
| File Format | |
| ISSN | 10518223 |
| Volume Number | 3 |
| Issue Number | 1 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 1993-03-01 |
| Publisher Place | U.S.A. |
| Access Restriction | One Nation One Subscription (ONOS) |
| Rights Holder | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Subject Keyword | Magnetic field measurement Ultrasonic variables measurement Attenuation Current measurement Charge measurement Temperature measurement Magnetic fields Polarization Temperature dependence High temperature superconductors |
| Content Type | Text |
| Resource Type | Article |
| Subject | Condensed Matter Physics Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering |
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