Magnetism and Magnetic Materials

Bio and Chemical Magnetism and Magnetic Fluids

Bio-magnetism is the phenomenon of magnetic fields produced by living organisms; it is a subset of bio electromagnetism. In contrast, organism’s use of magnetism in navigation is magnetoception and the study of the magnetic field’s effects on organisms is magneto biology. The fluid dynamics of biological fluids like blood in the presence of static high magnetic fields is investigated. All these magnets are formed by a group of metals called the ferromagnetic metals. These are metals like nickel and iron. Each of these metals has the special property of being able to be magnetized uniformly. Ferro fluid is a liquid that is attracted to the poles of a magnet. This is a colloidal liquid made of nanoscale ferromagnetic or ferrimagnetic, particles suspended in a carrier fluid. Each magnetic particle is closely coated with a surfactant to inhibit clumping.