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Normal domain temperature profile in second generation HTS tape wire.

Andrey V Malginov1, Alexander Yu Kuntsevich, Vladimir A Malginov

  • 1Lebedev Physical Institute RAS, 119991 Moscow, Russia.

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|November 21, 2013
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Summary
This summary is machine-generated.

The normal zone in high-temperature superconducting YBCO tape appears upon voltage application. Above a threshold voltage, this normal domain propagates, allowing temperature and potential profiling for power applications.

Keywords:
High-temperature superconductorsNormal zone propagationPhase transition

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Area of Science:

  • Materials Science
  • Condensed Matter Physics
  • Electrical Engineering

Background:

  • Investigating normal zone behavior in high-temperature superconducting (HTS) wires is crucial for power applications like fault current limiters and motors.
  • This study focuses on the temperature distribution and normal domain propagation in Yttrium Barium Copper Oxide (YBCO) tape with a highly resistive substrate.

Observation:

  • A normal domain forms in the YBCO tape when a voltage is applied across the sample.
  • This normal domain exhibits instability and begins to propagate along the tape once the applied voltage surpasses a specific threshold.

Findings:

  • The normal domain's propagation is initiated at applied voltages exceeding a critical threshold.
  • The observed motion of the normal domain provides a method to determine its temperature and potential profile.

Implications:

  • Understanding normal domain dynamics is key for designing stable and reliable HTS power devices.
  • The ability to profile the normal domain temperature and potential aids in predicting and mitigating potential failures in superconducting systems.