Figure 6: Influence of the size of the chromium oxide clusters on the ferroic order parameters.
From: Size-induced enhanced magnetoelectric effect and multiferroicity in chromium oxide nanoclusters
(a) Average magnetic moment of the clusters m, at 6 K and under −10 mV bias voltage, as a function of the nominal thickness of chromium deposited tCr (bottom scale) or average cluster size (top scale). The line is a fit according to m(tCr)= m0exp(−tCr/λm)tCr, with m0=966 μB and λm=0.36 nm. (b) Semi-logarithmic plot of m/tCr (magnetization, red symbols) and (VptCr)−1 (electric polarization, blue symbols) versus tCr, and linear fits (lines) to the experimental data. The error bars are derived from the standard errors of the least-squares fits performed to extract m and Vp from R(H) and TMR(V) data curves.
