What are the Key Properties of Nanoscale Magnetic Materials?
Some key properties include:
Superparamagnetism: This property is observed in nanoparticles smaller than 20-30 nm, where they exhibit zero remanence and coercivity in the absence of an external magnetic field. High Coercivity: Nanoscale magnets can have higher coercivity compared to their bulk counterparts, making them suitable for permanent magnet applications. Surface Effects: Due to their high surface-to-volume ratio, surface atoms play a significant role in determining the magnetic properties.
