Magnetic nanofibers with core (Fe3O4 nanoparticle suspension)/sheath (poly ethylene terephthalate) structure fabricated by coaxial electrospinning

► The composite nanofibers including the MRF and PET. ► The fabrication of core/sheath structured nanofibers using coaxial electrospinning. ► Superparamagnetic composite nanofibers.