Magnetic Fluids and Their Complex Systems

The presented chapter provides an overview of selected magnetic nanoparticle systems (magnetic fluids, magnetosomes, magnetoferritin and liquid crystals doped with magnetic particles) as the unique materials with potential utilization in the field of biological and biomedical applications as well as in the field of technology. The main idea for magnetic nanoparticles incorporating is the improvement of material properties and to achieve better conditions for a wide range of scientific disciplines such as magnetic hyperthermia, drug delivery, magneto-optics, power engineering and others.