Chapter 9: Dielectric and Magnetic Properties of Nanofluids

This chapter provides an overview of the dielectric and magnetic properties of transformer oil-based magnetic fluids as unique materials with potential utilization in the field of technology as insulating and cooling media. The main idea of incorporating magnetic nanoparticles in transformer oil is the improvement of its insulating and cooling properties, thus achieving better conditions for its wide application in power engineering technology. Here, we review some selected dielectric, magnetic and structural properties of transformer oil based magnetic fluids reported in recent years, including our latest research results.