Abstract
Profile magnetic configuration of a quantized flux line and flux-line lattice penetrating a type-II superconductor thing foil, niobium, was observed by electron holography and Lorentz microscopy using a 300 kV field-emission electron microscope. Each single flux line was distributed periodically as lattice structure in the mixed state just below its critical temperature of 8.5 K, while at low temperature of 5 K the flux lines were weakly bound as bundles. In order to observe the flux-line distribution over a wide area, discrete Fourier transform reconstruction in the holography was extended for a rectangular area without loss of information and data precision.
| Original language | English |
|---|---|
| Journal | Journal of Electron Microscopy |
| Volume | 52 |
| Issue number | 4 |
| Pages (from-to) | 369-373 |
| Number of pages | 5 |
| ISSN | 0022-0744 |
| Publication status | Published - 2003 |
| Externally published | Yes |
Keywords
- electron holography
- electron microscopy
- Lorentz microscopy
- numerical reconstruction
- superconducting flux lines
- flux-line lattice
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