Superparamagnetism

Superparamagnetism is a phenomenon that occurs when small particles with a magnetic moment interact with each other in a system. The magnetic moment is generated by the particle's spin and can be randomly oriented in the presence of an external magnetic field. These particles are much smaller than those used in traditional magnetism, and their moments can be changed rapidly and more easily than those of traditional magnets. As a result, the particles demonstrate a large, fast change in magnetization when subject to an external magnetic field, making them useful for a variety of applications in the field of magnetic data storage and sensing. Superparamagnetic particles can also find applications in biomedicine, magnetic therapy, and nanomaterials.