diamagnetic compound held in magnetic field experience a force in downward direction
Answers
Think iron, nickel and other "ferromagnetic" substances are the only ones with magnetic properties? In fact, everything reacts to magnetic fields in some way.
Only a few materials found in nature – iron, nickel, cobalt and gadolinium* – are ferromagnetic, meaning they exhibit a strong response to a magnetic field by aligning with it. All materials, however, experience some sort of reaction to magnetic fields, though the reaction may be so slight that it is imperceptible to the human eye. These reactions are described in the text and interactive tutorial below.
These forces can be hard to understand because they occur at the atomic level, due to the presence of electrons – negatively charged particles – in atoms. These electrons react to the external magnetic field, orienting toward one direction or the opposite direction. This orientation is known as magnetic moment.
In ferromagnetic substances, electrons align readily (in regions called magnetic domains) with outside magnetic fields, such as the Earth’s magnetic field, and stay that way. Paramagnetic substances also align with outside magnetic fields, but the effect is both weaker and more fleeting. Unlike ferromagnetic materials, which retain their alignment even after they leave the external magnetic field, in paramagnetic materials electrons return to their original orientations, some pointing one way, some the other. (Ferromagnetic materials stay magnetized because of the unique arrangement of their electrons).
In diamagnetism, another magnetic phenomenon, electrons within a substance respond to the outside magnetic field by, essentially, spinning faster. All this spinning generates magnetic forces that resist the outside field. Because all atoms possess electrons, all materials are diamagnetic to some degree. But if present, the stronger forces of paramagnetism or ferromagnetism will easily overshadow the diamagnetism.
_____________________
cRAZY pRINCE