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Schematics of the FM-LB bilayer system. The zoom-in picture illustrates the interface between the FM film and the functional groups of the LB molecular monolayer. The inset shows the scheme of the SA molecule in which the blue (small) ball and red (big) balls represent the methyl and carboxylic functional group, respectively.
Surface morphologies of LB and FM thin films. (a) and (b): The AFM images of h.o.s. and h.i.s. The contact angles between a water drop and the h.o.s. and h.i.s. surfaces are shown in (c) and (d), respectively, where the scale bar is set by 1 mm. [(e) and (f)] The AFM images of 4 nm CoFe and NiFe thin films on glass substrates.
Magnetic and surface characterizations of CoFe thin films on LB molecular underlayer. (a) and (b) show the hysteresis loops of 3 nm and 6 nm CoFe on three different surfaces, respectively. (c) shows the AFM images of 6 nm CoFe on h.o.s. and h.i.s., taken within the area of . (d) shows the plot of coercivity vs the thickness of CoFe for three kinds of underlayer, and the corresponding changes of roughness are indicated by the inset.
Magnetic and surface characterizations of NiFe thin films on LB molecular underlayer. (a) and (b) show the hysteresis loops of 6 nm and 4 nm NiFe on three different surfaces, respectively. (c) shows the AFM images of 4 nm NiFe on h.o.s. and h.i.s.
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