Figure 1
From: Growth mechanism and magnon excitation in NiO nanowalls
SEM images of the NiO nanowalls. (a-e) SEM images of the NiO nanowalls with various mean widths <d > which were synthesized at various annealing temperatures. (f) Distributions of mean nanowall width obtained from a portion of the SEM image of NiO nanowalls. The solid lines represent the fitting curves assuming the log-normal function.