Rugged low‐resistance contacts to YBa2Cu3Ox
作者： R. Caton , R. Selim , A. M. Buoncristiani , C. E. Byvik
DOI: 10.1063/1.99230
关键词: Shear strength 、 Composite material 、 Scanning electron microscope 、 Materials science 、 Direct current 、 High-temperature superconductivity 、 Superconductivity 、 Contact resistance 、 Electric current 、 Mineralogy 、 Electrical resistivity and conductivity
摘要: We have made rugged low‐resistance contacts to the high Tc superconductor YBa2Cu3Ox by melting gold beads onto surface of material. After retreating samples in oxygen, we measured contact resistance <50 μΩ. This allowed a direct current ≊5 A pass through without heating while sample remained superconducting state at 20 K. In this letter present results scanning electron microscopy, and measurements resistance, critical current, shear strength on these contacts. Such will be practical use carrying applications new superconductors.
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