Electrochemical synthesis of superconducting MgB2 thin films: a novel potential technique

Details Electrochemical synthesis of superconducting MgB2 thin films: a novel potential technique Electrochemical synthesis of superconducting MgB2 thin films: a novel potential technique

2002-07-17

arxiv.org/abs/cond-mat/0207406v1

Physics

Condensed Matter

Superconductivity

12 pages, 5 figures. Submitted to Journal of Physics: Condensed Matter

Scientific paper

A complexing molecule electrodeposition technique has been developed for the deposition of low cost, lightweight MgB2 films, for the first time. Different deposition parameters such as bath composition, deposition potential, current density, deposition time were studied and optimized to give uniform, homogeneous and sticky films. The MgB2 films were deposited at a constant potential of -1.3 V with respect to Saturated Calomel Electrode (SCE) onto silver substrate from aqueous bath and at -3.2 V with respect to SCE electrode onto silver substrate from non-aqueous bath. XRD, SEM and EDAX techniques are used to characterize these films. The films formed from non-aqueous electrochemical bath show the superconducting transition temperature at Tc = 36.4 K. The method developed is of less energy inputs than any other existing methods and of versatile nature having potential for large scale applications of MgB2 superconductors. PACS numbers: 74.70.Ad, 81.15.Pq, 74.76.-w *Author for correspondence

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