Fabrication and magnetic study of Co/Pt multilayer nanowires and Co–Pt alloy nanowires electrodeposited into porous Si substrates

Figures & data

Figure 1. (Colour online) Schematic diagram of ion etched tracks inside the Si substrate filled by: (a) Co–Pt alloys and (b) multilayer nanowires.

Figure 2. Current-time profile for growing of Co/Pt multilayer.

Figure 3. (a) SEM image of a substrate surface after filling the pores with Co–Pt nanowires. (b) EDAX spectrum of the sample.

Figure 4. Hysteresis loop of: (a) Co–Pt alloy and (b) [Co(5 nm)/Pt(3 nm)] multilayer. Magnetic field is applied parallel to the sample surface.

Figure 5. The schematic of experimental set up for MR measurements.

Figure 6. Transverse (a) and longitudinal (b) magnetoresistance for a [Co(5 nm)/Pt(3 nm)] multilayer nanowire.

Figure 7. Transverse (a) and longitudinal (b) magnetoresistance for a Co–Pt alloy nanowire.

Figure 8. EDAX spectrum for a Co–Pt alloy nanowire.

Figure 9. GMR as a function of Pt layer thickness for a series of nanowires with similar Co thickness of 5 nm.