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      Effect of Ag2O doping on the superconductivity of the BiPbSrCaCuO oxide

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      https://www.riss.kr/link?id=E805530

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      다국어 초록 (Multilingual Abstract)

      Electromagnetic properties of Ag_(2)O doped and undoped BiPbSrCaCuO superconductor were evaluated to investigate the effect of pinning center on the magnetic shielding and suspension/levitation phenomena. The residual magnetization ΔM = M^(+) - M^(-)...

      Electromagnetic properties of Ag_(2)O doped and undoped BiPbSrCaCuO superconductor were evaluated to investigate the effect of pinning center on the magnetic shielding and suspension/levitation phenomena. The residual magnetization ΔM = M^(+) - M^(-) increased with dopant concentration, a maximum for 2% doping, wherein a fine uniform dispersion of Ag particles was observed. The magnetic shielding was evaluated by measuring the induced voltage in secondary coil by placing the sample in between primary coil. The voltage initially set to 0.5 V, decreased to 0.17 and 0.28 V, respectively for the undoped and 2% Ag_(2)O doped samples. The much less change in the induced voltage for the 2% doped sample is attributed to the increased flux shielding by shielding vortex current.

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      목차 (Table of Contents)

      • 1. Introduction
      • 2. Experiment
      • 3. Results and Discussion
      • 3.1. Magnetization
      • 3.2. The shielding effect
      • 1. Introduction
      • 2. Experiment
      • 3. Results and Discussion
      • 3.1. Magnetization
      • 3.2. The shielding effect
      • 3.3. Superconductor levitation and suspension
      • 4. Conclusion
      • References
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