Nano‐engineered pinning centres in YBCO superconducting films

Abstract

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Nanomaterials for renewable energy economy

“…This reduces requirements for thermal insulation, and aerogel [5,6] could be used, at least partially, instead of vacuum. Furthermore, established nano-techniques [10] could be used to improve critical current density in YBCO cover.…”

“…The materials preparation techniques include traditional pulsed laser deposition [10], hot isostatic pressing [8] as well as less used spark plasma sintering [11], spin-coating [12] and paint covering [8].…”

Excitation of Vortex-Antivortex Pairs in Thin Superconducting Films and Superlattices

“…Based on thin-film technology, pulse laser-deposited superconducting tapes of second generation are already in trial use in cable and magnets applications [3]. Advanced preparation of thin films is based on nano-techniques designed to improve their critical current density, especially in strong magnetic fields [4]. Still, physics of magnetic behaviour of superconducting films is not ful-ly understood and continue to surprise by unusual effects.…”

Flux Channeling in YBa2Cu3O7 Superlattices

“…This requires introduction of dense nano-arrays of pinning centers. Related modern techniques for creating these arrays are described in [3]. A very efficient way of forming nano-columns that are strong pinning centers for vortices in superconducting films, is to start with deposition of the array of nanoparticles of suitable material on the substrate before the deposition of superconducting film.…”