Magnetization is the process by which a material becomes magnetized when exposed to an external magnetic field. This can occur through various mechanisms, such as aligning the magnetic moments of individual atoms or domains within the material.
Induced Magnetization: As the magnetic moments align, the material becomes magnetized, exhibiting its own magnetic field in the same direction as the external field.
Permanent Magnetization: In some materials, the alignment of magnetic moments can persist even after the removal of the external field, leading to permanent magnetization.
Magnetization Processes
There are several processes through which magnetization can occur, including:
Paramagnetism:Materials with unpaired electrons, such as aluminum or platinum, become weakly magnetized in the presence of an external field.
Diamagnetism: All materials exhibit some degree of diamagnetism, where the induced magnetization opposes the external field, leading to a weak repulsion.
Applications
Magnetization has a wide range of practical applications, including:
MagneticStorage: Hard drives and magnetic tapes rely on the magnetization of microscopic regions to store digital information.
By grasping these fundamental principles and their applications, you can develop a comprehensive understanding of magnetization and its significance in the world around us.
Energy - A. Energy is involved in all physical and chemical processes. It is conserved, and can be transformed from one form to another and into work. At the atomic and nuclear levels energy is not continuous but exists in discrete amounts. Energy and mass are related through Einstein's equation E=mc 2 . B. The properties of atomic nuclei are responsible for energy-related phenomena such as radioactivity, fission and fusion. C. Changes in entropy and energy that accompany chemical reactions influence reaction paths. Chemical reactions result in the release or absorption of energy. D. The theory of electromagnetism explains that electricity and magnetism are closely related. Electric charges are the source of electric fields. Moving charges generate magnetic fields. E. Waves are the propagation of a disturbance. They transport energy and momentum but do not transport matter.
Relate temperature to the average molecular kinetic energy.