Controlled synthesis and magnetic properties of monodisperse Ni1−xZnxFe2O4/MWCNT nanocomposites via microwave-assisted polyol process

► Microwave-assisted polyol preparation of monodisperse Ni1−xZnxFe2O4/MWCNT nanocomposites. ► The composition can be controlled through adjusting the atomic ratios of nickel and zinc salts. ► Ms reaches maximum for x = 0.5. Hc is low and thus exhibits superparamagnetic.