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Studying the kinetics of magnetization in high tc superconductors
| Content Provider | NASA Technical Reports Server (NTRS) |
|---|---|
| Author | Turchinskaya, Marina |
| Copyright Year | 1993 |
| Description | The first microscopic maps of magnetic induction in YBa2Cu3O(7-x) crystals which directly show the dependence of flux flow on twin density and polytwin block and twin boundary orientation are reported. These maps were obtained by means of a recently-improved magneto-optical imaging technique. Pinning was lowest in untwinned regions and increased with increasing twin density. An isotropy in twin boundary pinning, defined as the ratio of the magnetic induction gradient across twin boundaries to that along twin boundaries, was 10 at 17 K; this ratio increased with increasing temperature. In polycrystals, twin boundaries also had a strongly anisotropic effect on flux flow into a grain from a grain boundary. |
| File Size | 472556 |
| Page Count | 11 |
| File Format | |
| Alternate Webpage(s) | http://archive.org/details/NASA_NTRS_Archive_19930015919 |
| Archival Resource Key | ark:/13960/t7dr7rz67 |
| Language | English |
| Publisher Date | 1993-02-08 |
| Access Restriction | Open |
| Subject Keyword | Solid-state Physics Grain Boundaries Ybco Superconductors Magnetic Induction Flux Pinning Mechanical Twinning Magnetization Magneto-optics Flux Density Anisotropy Reaction Kinetics Imaging Techniques Polycrystals Ntrs Nasa Technical Reports Server (ntrs) Nasa Technical Reports Server Aerodynamics Aircraft Aerospace Engineering Aerospace Aeronautic Space Science |
| Content Type | Text |
| Resource Type | Technical Report |
