The effect of off time in pulse-electrodeposition method on CoCr nanowire array structure & magnetic properties

Due to the importance and specific applications of magnetic NWs in augmenting the spintronic devices, the present study set out to fabricate CoCr alloy NW arrays. The CoCr NWs with a diameter of ۳۰ nm were grown into anodic aluminum oxide (AAO) nanopores by the alternating current pulse electrodeposition (AC PED) technique. The effect of off time, i.e., ۰, ۱۰۰, ۴۰۰, and ۶۰۰ ms are investigated on the microstructure and magnetic properties of CoCr NWs. An increase in the off time from ۰ to ۱۰۰ ms displays an increase of ۳۰% in the coercivity of CoCr NWs, from ۱۲۹۷ Oe to ۱۹۰۰. According to the XRD results, the off time has contributed to an increase in the intensity of the Co (۰۰۲) plane of the CoCr NWs crystal structure. Further, the FORC analysis exhibits the formation of soft and hard magnetic phases due to the variation of the off time between pulses.

کلیدواژه ها:

CoCr nanowire array ، pulsed AC electrodeposition ، first-order reversal curve (FORC) diagram