Investigation of Low-Pressure Bimetallic Cobalt-Iron Catalyst-Grown Multiwalled Carbon Nanotubes and Their Electrical Properties
Figure 2
(a) SEM images of MWCNTs grown on Co20Fe80 and Co50Fe50 catalyst thickness of 4 nm at different pressures for 5 min. (b) High-frequency Raman spectrum (473 nm excitation) of MWCNT at 4 nm thick catalyst. The relative ratio of the Raman bands (/) reflects the quality of the presence of nanotubes.