Annihilation Instability in Hard Superconductors
- 15 February 1965
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 137 (4A), A1205-A1208
- https://doi.org/10.1103/physrev.137.a1205
Abstract
Mutual annihilation between neighboring fluxoids of opposite flux direction is proposed as an origin for some instabilities in hard superconductors. The presence of a reversal of the direction of magnetic induction within the superconductor is recognized as a necessary condition for the annihilation instability, and the boundaries of the region of instability can be calculated from critical-state concepts. Specimens of coldworked niobium-zirconium alloys were found to display a region of instabilities with boundaries and characteristics expected of the annihilation instability.Keywords
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