ÇELİK, Erdal Dokuz Eylul University - Engineering Faculty, Center for Production and Applications of Electronic Materials (EMUM) - Department of Metallurgical and Materials Engineering, Turkey , BİRLİK, Işıl Dokuz Eylul University - Engineering Faculty - Department of Metallurgical and Materials Engineering, Turkey , BEKTAŞ, Murat Dokuz Eylul University - Engineering Faculty, Center for Production and Applications of Electronic Materials (EMUM) - Department of Metallurgical and Materials Engineering, Turkey , ÇULHA, Osman 3Celal Bayar University - Engineering Faculty - Department of Materials Engineering, Turkey , TOPARLİ, Mustafa Dokuz Eylul University - Engineering Faculty - Department of Metallurgical and Materials Engineering, Turkey

Improvement of Flux Pinning Properties of YBCO Superconducting Films with BaMeO3 (Me:Zr, Mn, Hf and Ir) Perovskite Nanoparticles by TFA-MOD Technique

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Superconducting materials increase performances of machines by intensively using in MRI in medicine, thermal bolometer, energy stroge systems in transformer, magnetic separators, levitation, NMR, generators, engines, cables, superconducting wires and tapes, accelerators, electromagnets, and electronic transistors. In these applications, the high temperature superconductors (HTS) possess very high crtitical current density (Jc) values at low temperature even in high magnetic fields. In these kinds of studies, many kinds of crystalline defects, such as fine precipitates of non-superconducting phases, dislocations, vacancies, grain boundaries, twin boundaries and so on, are considered to act as pinning centers. However, the Jc values rapidly decrease with increasing temperature in magnetic field. The main reason of the Jc depression is the lack of effective pinning in the structure. Depending on these reason, a novel technology has been developed by means of a nanostructure engineering to create artificial pinning centers in HTC materials. With this regard, increasing critical current density and improvement of flux pinning properties of YBa2Cu3O6.57 (YBCO) superconducting films with BaMeO3 (Me:Zr, Mn, Hf and Ir) perovskite nanodots, nanorods or nanoparticles, as pinning centers, on SrTiO3 substrate were aimed.

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High temperature superconductors , YBCO , BaMeO3 , Flux pinning , STO , TFA , MOD

Afyon Kocatepe University Journal Of Science an‎d Engineering

260