ShareThermal multistability of thin YBCO films carrying direct current.
Author(s) : SKOKOV V. N., KOVERDA V. P.
Type of article: Article
Summary
The voltage-current characteristics have been determined in films during cooling in a nitrogen gas-flow cryostat and in liquid nitrogen directly. A state of thermal bistability arises when cooling samples with a rarefied gas and in this case the voltage-current characteristic is s-shaped. A state of multistability arises when cooling samples directly with liquid nitrogen. The emergence of this multistability is caused by non-stationary heat removal due to nitrogen boiling. The effect on the resistive state of films of the transitions from the one-phase convective heat exchange in liquid nitrogen to a regime of bubble boiling and from a regime of bubble boiling to a boiling crisis has been investigated.
Details
- Original title: Thermal multistability of thin YBCO films carrying direct current.
- Record ID : 1994-2105
- Languages: English
- Source: Cryogenics - vol. 33 - n. 11
- Publication date: 1993/11
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Indexing
- Themes: Superconduction
- Keywords: Superconduction; YBCO; Superconductor; Stability; Film
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