Gradient core–shell HTS/polymer covered magnetoactive composites with ultrafine particles fabricated by 3D printing

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In this study, we report the laser synthesis and characterization of the core–shell high-temperature superconductor oxides of SrFe12O19 and CoFe2O4 phases covered with biocompatible polyetheretherketone shells of ultrafine particles and layerwise selective laser sintering of the 3D samples. The optimal regimes of such synthesis are being discussed. Optical and scan electron microscopy with EDX, X-ray diffraction studies show that both core–shell systems have a complex structure with interesting electro-physical properties. Expanding computer aid design of the HTS core distribution in polymer matrix opens door to manipulating the electromagnetic field distribution in such 3D complex core–shell samples.