Magnetic flux pinning and irreversibility in YBa2Cu3O7 superconducting crystal
✍ Scribed by L.T. Sagdahl; S. Gjølmesli; P. Tuset; O.-M. Nes; T. Lægreid; K. Fossheim; W. Assmus
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 384 KB
- Volume
- 165-166
- Category
- Article
- ISSN
- 0921-4526
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📜 SIMILAR VOLUMES
Thin films of YBazCuaO+x are deposited on MgO substrates via dc magnetron sputter technic. The thicknesses varry between 1Onm and 500nm. The films are patterned by dry etching method. Narrow stripes with widths down to 1 urn are obtained without serious degradation, e.g. Tc,ocf > 85K and Tc < 1.6K.
Measurements of the trapped flux (rcmanent magnetism) in polycrystalline YBasCusO, in the range 15-50 K show that at low applied field pulses, flux is trapped in the intergrain voids. A detailed measurement of a map of the remanent field over the whole surface of the sample shows that at very low fi