Figure 5
From: Investigation of a Mesoporous Silicon Based Ferromagnetic Nanocomposite
Zero field cooled/field cooled (ZFC/FC) measurements show a shift of the blocking temperature TB to lower temperatures with decreasing concentration, which can be explained by less interaction between the particles.TB indicates the transition between ferro- and superparamagnetic behaviour. The broadening of the peak is not caused by inhomogeneous particle size distribution but by magnetic interactions between the particles. The initial concentration of the particle solution has been diluted with hexane till a 50% solution of the initial one has been reached