A Short Review on Verwey Transition in Nanostructured Fe₃O₄ Materials

Figure 3

Size-dependent characterization of the VT: temperature dependence of the first derivative of conductance (a), magnetization data measured at 100 Oe (b), and total heat capacity divided by temperature (c). The full width at quarter maximum (FWQM) of the Fe NMR spectra versus temperature [19]. The inset shows the Fe NMR spectral intensity of the 25 nm sample obtained at temperatures around (d). Size dependence of VT from combined data (e) [20].

(a)

(b)

(c)

(d)

(e)