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The feasibility of generating superconducting coatings on niobium using plasma electrolytic oxidation (PEO) is demonstrated. A silicate-phosphate electrolyte was employed containing MgB2 particles. The coatings were examined by scanning electron… Click to show full abstract
The feasibility of generating superconducting coatings on niobium using plasma electrolytic oxidation (PEO) is demonstrated. A silicate-phosphate electrolyte was employed containing MgB2 particles. The coatings were examined by scanning electron microscopy and X-ray diffraction. The coatings contained crystalline Nb2O5, SiO2-rich amorphous material, and incorporated MgB2. The magnetic moment-temperature curve determined using a superconducting quantum interference device (SQUID) magnetometer revealed a transition to the superconducting state at 39 K, characteristic of MgB2. The increasing negative magnetic moment of MgB2 below 39 K is proposed to be due to differences in the critical fields of individual MgB2 clusters.
Journal Title: ECS Journal of Solid State Science and Technology
Year Published: 2019
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