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Magnetic relaxation in (Cu; C)Ba₂Ca₃Cu₄O₁₁+δ superconductors
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DOI：10.1088/1361-6668/ae62b6.png)
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Abstract
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The non-toxic copper oxide superconductor (Cu, C)Ba₂Ca₃Cu₄O₁₁+δ exhibits significant potential for applications, characterized by a high superconducting transition onset temperature (Tconset) of up to 116 K and a high irreversibility field within the liquid nitrogen temperature range. This study presents a comprehensive investigation of vortex dynamics in (Cu, C)Ba₂Ca₃Cu₄O₁₁+δ. Notably, this material exhibits a relatively low magnetic relaxation (S< 0.03), indicating slow vortex motion and strongly suppressed energy dissipation. Through the analysis using the thermally activated flux flow model, the study found that the vortex pinning in this material is primarily governed by the planar pinning mechanism. These unique physical properties underscore the material’s value for future applications in energy transmission, magnetic levitation and scientific research.
Keywords:
vortex dynamics
magnetic relaxation
planar pinning
high-temperature superconductors
Cu-based superconductors
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4.2
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8.3K
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1.2W
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