Progress in Superconductivity and Cryogenics (한국초전도ㆍ저온공학회논문지)

The Korean Society of Superconductivity and Cryogenics (한국초전도저온학회)
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Effects of Ga doping on the superconducting properties of (B1-xGax) (Ba1.25Sr0.75)(Ca0.5Er0.5)Cu2Oz

  • Received : 2023.12.11
  • Accepted : 2023.12.28
  • Published : 2023.12.31
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Abstract

We have investigated the behavior induced by Ga substitution in B-1212 system and observed an anomalous superconductor-like resistivity drop with an onset near 260 K and an offset at 248 K in the nominal (B0.65Ga0.35)(Ba1.25Sr0.75)(Er0.5Ca0.5)Cu2Oz compound. However, this property degraded with repeated cycling. Systematic studies of the superconducting properties of the (B1-xGax)(Ba1.25Sr0.75)(Er0.5Ca0.5)Cu2Oz compounds are reported and discussed in the context of the anomalous resistivity transition.

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Acknowledgement

This work was supported partly by National Research Foundation of Korea (NRF) grants funded by the Korean Government (MSIT) (NRF-2020R111A3074529). The author also expresses his thanks to the Central Laboratory of Kangwon National University for help with XRD measurements.

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