Control of sub-micron sized particles is of increasing interest as there is clear evidence that small atomic clusters (n = 10-1000 atoms) exhibit novel hybrid properties between the molecular and bulk solid-state limits. Through SANS and SQUID magnetometry we recently showed that quantum effects can be observed in nanoparticle-free ferrofluids through the design of magnetic micelles and microemulsions from magneto-surfactants1. Such systems bridge the gap between molecular nanomagnets (n <30) and magnetic nanoparticles (MNPs) (n = 100-1000)2, allowing controlled values of n and combining magnetic ordering with properties such as low-density, and electric insulation. This is a significant step forward as the advantage of employing these microemulsions over nanoparticle containing ferrofluids is in situ tunability through careful control of surfactant type, mixture ratio, and composite volume fractions: the proposal aims to explore this tunability.