Communication—formation of a superconducting MgB2-containing coating on niobium by plasma electrolytic oxidation

Aliasghari, S. and Skeldon, P. and Zhou, X. and Valizadeh, R. and Junginger, T. and Stenning, G.B.G. and Burt, G. (2019) Communication—formation of a superconducting MgB2-containing coating on niobium by plasma electrolytic oxidation. ECS Journal of Solid State Science and Technology, 8 (3). N39-N41. ISSN 2162-8769

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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.

Item Type:
Journal Article
Journal or Publication Title:
ECS Journal of Solid State Science and Technology
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/2500/2504
Subjects:
ID Code:
136887
Deposited By:
Deposited On:
28 Apr 2020 08:45
Refereed?:
Yes
Published?:
Published
Last Modified:
16 Sep 2020 05:51