Controlled electrochemical growth and magnetic properties of CoFe2O4 nanowires with high internal magnetic field

Abstract

Abstract Self-polarized ferrimagnetic nanowires of CoFe2O4 are electrochemically grown by the electrodeposition technique in AAO membranes. XRD, EDS and SQUID analysis confirm the formation of highly stoichiometric CoFe2O4 nanowires with high magnetic response into 20\xa0nm -AAO membrane. SEM and AFM images revealed a total filling of the AAO membrane with Co and Fe at an applied potential of -1.2\xa0V. In addition, the electrodeposition and cooling in the presence of an applied magnetic field improve the magnetic response of CoFe2O4 nanowires. The SQUID measurements confirmed the elaboration of CoFe2O4 nanowires with an internal magnetic field of 1.52\xa0T. As a result, this ferrimagnetic nanowired substrate will be suitable for future miniaturized self-biased microwave devices.