Study of magnetite nanoparticles embedded in lyotropic liquid crystals

A study about the magnetic behaviour of magnetite nanoparticles diluted in lyotropic liquid crystals was carried out. It was corroborated that micellar phases of the liquid crystal suppressed the superparamagnetism of the nanoparticles by rising the blocking temperature beyond the room temperature. Phase transitions in the lyotropic mixtures can be determined from M vs. T curves of the ferrolyotropic. When the liquid crystal is in the nematic discotic phase, the magnetization and the susceptibility of the mixture mimics the behaviour of the orientational order parameter of the phase.